diff --git a/component/scanner/build.gradle b/component/scanner/build.gradle
index fa7765d2..61a9b1de 100644
--- a/component/scanner/build.gradle
+++ b/component/scanner/build.gradle
@@ -1,5 +1,6 @@
 plugins {
     alias(libs.plugins.com.android.library)
+    id 'com.google.dagger.hilt.android'
 }
 
 android {
@@ -33,8 +34,16 @@ dependencies {
     androidTestImplementation libs.androidx.test.ext.junit
     androidTestImplementation libs.androidx.test.espresso.core
 
+    // Hilt (DI)
+    implementation libs.com.google.dagger.hilt.android
+    annotationProcessor libs.com.google.dagger.hilt.compiler
+
     implementation 'com.websitebeaver:documentscanner:1.0.0'
 
     implementation project(':shared:ui')
     implementation project(':model')
+
+    implementation project(':processor')
+
+    implementation project(':utils')
 }
\ No newline at end of file
diff --git a/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerDataManagerStubFragment.java b/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerDataManagerStubFragment.java
index 05b8dea8..2d15b51b 100644
--- a/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerDataManagerStubFragment.java
+++ b/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerDataManagerStubFragment.java
@@ -25,15 +25,32 @@ import android.widget.Toast;
 import java.io.File;
 import java.io.IOException;
 import java.text.SimpleDateFormat;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.Locale;
+import java.util.UUID;
+
+import javax.inject.Inject;
+
+import dagger.hilt.android.AndroidEntryPoint;
+import one.nem.lacerta.model.document.DocumentDetail;
+import one.nem.lacerta.model.document.DocumentMeta;
+import one.nem.lacerta.model.document.path.DocumentPath;
+import one.nem.lacerta.processor.DocumentProcessor;
+import one.nem.lacerta.processor.factory.DocumentProcessorFactory;
+
+import one.nem.lacerta.utils.LacertaLogger;
+
+import one.nem.lacerta.utils.repository.DeviceInfoUtils;
 
 /**
  * A simple {@link Fragment} subclass.
  * Use the {@link ScannerDataManagerStubFragment#newInstance} factory method to
  * create an instance of this fragment.
  */
+@AndroidEntryPoint
 public class ScannerDataManagerStubFragment extends Fragment {
 
     // TODO-rca: 時間があったらcacheを使うようにする？
@@ -43,6 +60,19 @@ public class ScannerDataManagerStubFragment extends Fragment {
 
     private Uri photoURI;
 
+    private DocumentDetail documentDetail;
+
+    private DocumentProcessor documentProcessor;
+
+    @Inject
+    DocumentProcessorFactory documentProcessorFactory;
+
+    @Inject
+    LacertaLogger logger;
+
+    @Inject
+    DeviceInfoUtils deviceInfoUtils;
+
     private final ActivityResultLauncher<Intent> cameraLauncher = registerForActivityResult(
             new ActivityResultContracts.StartActivityForResult(),
             result -> {
@@ -120,6 +150,65 @@ public class ScannerDataManagerStubFragment extends Fragment {
             }
             updateResults();
         });
+
+        view.findViewById(R.id.button_create_documnent).setOnClickListener(v -> {
+            Log.d("ScannerDataManagerStubFragment", "button_create_documnent clicked");
+            Toast.makeText(getActivity(), "button_create_documnent clicked", Toast.LENGTH_LONG).show();
+
+            this.documentDetail = createSampleDocumentDetail();
+
+        });
+
+        view.findViewById(R.id.button_init_document_processor).setOnClickListener(v -> {
+            Log.d("ScannerDataManagerStubFragment", "button_init_document_processor clicked");
+            Toast.makeText(getActivity(), "button_init_document_processor clicked", Toast.LENGTH_LONG).show();
+            // TODO-rca: ここでDocumentProcessorを初期化する
+            if (this.documentDetail == null) {
+                Toast.makeText(getActivity(), "documentDetail is null", Toast.LENGTH_LONG).show();
+                return;
+            }
+            this.documentProcessor = documentProcessorFactory.create(this.documentDetail);
+            Toast.makeText(getActivity(), "documentProcessor created", Toast.LENGTH_LONG).show();
+            this.documentProcessor.init();
+            Toast.makeText(getActivity(), "documentProcessor initialized", Toast.LENGTH_LONG).show();
+        });
+
+        view.findViewById(R.id.button_add_page).setOnClickListener(v -> {
+            Log.d("ScannerDataManagerStubFragment", "button_add_page clicked");
+            Toast.makeText(getActivity(), "button_add_page clicked", Toast.LENGTH_LONG).show();
+            if (this.documentProcessor == null) {
+                Toast.makeText(getActivity(), "documentProcessor is null", Toast.LENGTH_LONG).show();
+                return;
+            }
+            Bitmap[] bitmaps = new Bitmap[results.size()];
+            for (int i = 0; i < results.size(); i++) {
+                bitmaps[i] = results.get(i).getBitmap();
+            }
+
+            this.documentProcessor.addNewPagesToLast(bitmaps);
+
+            this.documentProcessor.close();
+        });
+    }
+
+    public DocumentDetail createSampleDocumentDetail() {
+
+        String id = UUID.randomUUID().toString();
+
+        Toast.makeText(getActivity(), "Generated id: " + id, Toast.LENGTH_LONG).show();
+        //logger.debug("CreateSample", "Generated id: " + id);
+
+        DocumentMeta meta = new DocumentMeta(
+                id,
+                "Sample" + DateTimeFormatter.ofPattern("yyyyMMddHHmmss").format(LocalDateTime.now()),
+                new Date(),
+                new Date());
+
+        DocumentPath path = new DocumentPath(
+                deviceInfoUtils.getExternalStorageDirectoryString(),
+                "Sample" + DateTimeFormatter.ofPattern("yyyyMMddHHmmss").format(LocalDateTime.now()));
+
+        return new DocumentDetail(meta, path, "SampleAuthor", "SampleDefaultBranch");
     }
 
     @Override
diff --git a/component/scanner/src/main/res/layout/fragment_scanner_data_manager_stub.xml b/component/scanner/src/main/res/layout/fragment_scanner_data_manager_stub.xml
index 23f74a7b..61753a90 100644
--- a/component/scanner/src/main/res/layout/fragment_scanner_data_manager_stub.xml
+++ b/component/scanner/src/main/res/layout/fragment_scanner_data_manager_stub.xml
@@ -11,6 +11,7 @@
         android:id="@+id/action_button_container"
         android:layout_width="match_parent"
         android:layout_height="0dp"
+        android:weightSum="2"
         android:orientation="horizontal"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
@@ -19,7 +20,7 @@
         <com.google.android.material.button.MaterialButton
             android:id="@+id/button_call_camera"
             style="@style/Widget.Material3.Button.IconButton.Filled"
-            android:layout_width="wrap_content"
+            android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_margin="16px"
             android:layout_weight="1"
@@ -27,6 +28,58 @@
 
     </LinearLayout>
 
+    <LinearLayout
+        android:id="@+id/init_button_container"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:orientation="horizontal"
+        android:weightSum="2"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/action_button_container">
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/button_create_documnent"
+            style="@style/Widget.Material3.Button.IconButton.Filled"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_margin="16px"
+            android:layout_weight="1"
+            android:text="Create Doc Obj" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/button_init_document_processor"
+            style="@style/Widget.Material3.Button.IconButton.Filled"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_margin="16px"
+            android:layout_weight="1"
+            android:text="Init Processor" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:id="@+id/doc_button_container"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:weightSum="2"
+        android:orientation="horizontal"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/init_button_container">
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/button_add_page"
+            style="@style/Widget.Material3.Button.IconButton.Filled"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_margin="16px"
+            android:layout_weight="1"
+            android:text="Add page to last" />
+
+    </LinearLayout>
+
     <androidx.recyclerview.widget.RecyclerView
         android:id="@+id/result_recycler_view"
         android:layout_width="match_parent"
@@ -35,6 +88,6 @@
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/action_button_container" />
+        app:layout_constraintTop_toBottomOf="@id/doc_button_container" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/feature/debug/build.gradle b/feature/debug/build.gradle
index e029dff3..ba7689a6 100644
--- a/feature/debug/build.gradle
+++ b/feature/debug/build.gradle
@@ -65,4 +65,7 @@ dependencies {
     // Scanner
     implementation project(':component:scanner')
 
+    // Processor
+    implementation project(':processor')
+
 }
\ No newline at end of file
diff --git a/feature/debug/src/main/java/one/nem/lacerta/feature/debug/DebugMenuDocProcessorTesterFragment.java b/feature/debug/src/main/java/one/nem/lacerta/feature/debug/DebugMenuDocProcessorTesterFragment.java
new file mode 100644
index 00000000..c144a934
--- /dev/null
+++ b/feature/debug/src/main/java/one/nem/lacerta/feature/debug/DebugMenuDocProcessorTesterFragment.java
@@ -0,0 +1,44 @@
+package one.nem.lacerta.feature.debug;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link DebugMenuDocProcessorTesterFragment#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class DebugMenuDocProcessorTesterFragment extends Fragment {
+    public DebugMenuDocProcessorTesterFragment() {
+        // Required empty public constructor
+    }
+
+    public static DebugMenuDocProcessorTesterFragment newInstance() {
+        DebugMenuDocProcessorTesterFragment fragment = new DebugMenuDocProcessorTesterFragment();
+        Bundle args = new Bundle();
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        View view = inflater.inflate(R.layout.fragment_debug_menu_doc_processor_tester, container, false);
+
+
+
+        return view;
+    }
+}
\ No newline at end of file
diff --git a/feature/debug/src/main/java/one/nem/lacerta/feature/debug/DebugMenuFileManagerTesterFragment.java b/feature/debug/src/main/java/one/nem/lacerta/feature/debug/DebugMenuFileManagerTesterFragment.java
new file mode 100644
index 00000000..f27bfe3a
--- /dev/null
+++ b/feature/debug/src/main/java/one/nem/lacerta/feature/debug/DebugMenuFileManagerTesterFragment.java
@@ -0,0 +1,110 @@
+package one.nem.lacerta.feature.debug;
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.EditText;
+
+import dagger.hilt.android.AndroidEntryPoint;
+import one.nem.lacerta.source.file.FileManager;
+import one.nem.lacerta.source.file.factory.FileManagerFactory;
+
+import one.nem.lacerta.utils.repository.DeviceInfoUtils;
+
+import javax.inject.Inject;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link DebugMenuFileManagerTesterFragment#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+@AndroidEntryPoint
+public class DebugMenuFileManagerTesterFragment extends Fragment {
+
+    public DebugMenuFileManagerTesterFragment() {
+        // Required empty public constructor
+    }
+
+    @Inject
+    FileManagerFactory fileManagerFactory;
+
+    @Inject
+    DeviceInfoUtils deviceInfoUtils;
+
+    // TODO: Rename and change types and number of parameters
+    public static DebugMenuFileManagerTesterFragment newInstance() {
+        DebugMenuFileManagerTesterFragment fragment = new DebugMenuFileManagerTesterFragment();
+        Bundle args = new Bundle();
+
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        View view = inflater.inflate(R.layout.fragment_debug_menu_file_manager_tester, container, false);
+
+        view.findViewById(R.id.button_create_directory).setOnClickListener(v -> {
+            EditText editText = view.findViewById(R.id.edit_text_dir_name);
+            String dirName = editText.getText().toString();
+
+            FileManager fileManager = fileManagerFactory.create(deviceInfoUtils.getExternalStorageDirectory());
+            fileManager.createDir(dirName);
+        });
+
+        view.findViewById(R.id.button_save_item).setOnClickListener(v -> {
+            FileManager fileManager = fileManagerFactory.create(deviceInfoUtils.getExternalStorageDirectory());
+            fileManager.createDir("test");
+            fileManager.changeDir("test");
+            Bitmap bitmap = Bitmap.createBitmap(1000, 1000, Bitmap.Config.ARGB_8888);
+            // Bitmapに描画処理を行う
+            Canvas canvas = new Canvas(bitmap);
+            // 大きな山の形状を作成
+            android.graphics.Path bigMountainPath = new android.graphics.Path();
+            bigMountainPath.moveTo(100, 800); // 左下の開始点
+            bigMountainPath.lineTo(500, 300); // 頂点
+            bigMountainPath.lineTo(900, 800); // 右下
+            bigMountainPath.close(); // パスを閉じる
+
+            // 山の描画設定
+            Paint mountainPaint = new Paint();
+            mountainPaint.setColor(Color.GREEN);
+            mountainPaint.setStyle(Paint.Style.FILL);
+
+            // 大きな山を描画
+            canvas.drawPath(bigMountainPath, mountainPaint);
+
+            // 小さな山の形状を作成
+            android.graphics.Path smallMountainPath = new android.graphics.Path();
+            smallMountainPath.moveTo(400, 800); // 左下の開始点
+            smallMountainPath.lineTo(650, 400); // 頂点
+            smallMountainPath.lineTo(900, 800); // 右下
+            smallMountainPath.close(); // パスを閉じる
+
+            Paint smallMountainPaint = new Paint();
+            smallMountainPaint.setColor(Color.parseColor("#006e54"));
+            smallMountainPaint.setStyle(Paint.Style.FILL);
+
+            // 小さな山を描画
+            canvas.drawPath(smallMountainPath, smallMountainPaint);
+            fileManager.saveBitmapAtCurrent(bitmap, "test.png");
+        });
+
+        return view;
+    }
+}
\ No newline at end of file
diff --git a/feature/debug/src/main/java/one/nem/lacerta/feature/debug/DebugMenuTopFragment.java b/feature/debug/src/main/java/one/nem/lacerta/feature/debug/DebugMenuTopFragment.java
index e37833c1..3ddb0006 100644
--- a/feature/debug/src/main/java/one/nem/lacerta/feature/debug/DebugMenuTopFragment.java
+++ b/feature/debug/src/main/java/one/nem/lacerta/feature/debug/DebugMenuTopFragment.java
@@ -12,6 +12,7 @@ import android.view.ViewGroup;
 import java.util.ArrayList;
 import java.util.List;
 
+import dagger.hilt.android.AndroidEntryPoint;
 import one.nem.lacerta.feature.debug.common.adapter.DebugMenuListItemAdapter;
 import one.nem.lacerta.feature.debug.common.model.DebugMenuListItem;
 
@@ -20,6 +21,7 @@ import one.nem.lacerta.feature.debug.common.model.DebugMenuListItem;
  * Use the {@link DebugMenuTopFragment#newInstance} factory method to
  * create an instance of this fragment.
  */
+@AndroidEntryPoint
 public class DebugMenuTopFragment extends Fragment {
     public DebugMenuTopFragment() {
         // Required empty public constructor
@@ -49,6 +51,7 @@ public class DebugMenuTopFragment extends Fragment {
         debugMenuListItems.add(new DebugMenuListItem("Meta Data", "View meta data", R.id.action_debugMenuTopFragment_to_debugMenuMetaDataFragment, true));
         debugMenuListItems.add(new DebugMenuListItem("Document Tester", "placeholder", R.id.action_debugMenuTopFragment_to_debugMenuDocumentTesterTopFragment, true));
         debugMenuListItems.add(new DebugMenuListItem("Scanner", "placeholder", R.id.action_debugMenuTopFragment_to_scannerDataManagerStubFragment, true));
+        debugMenuListItems.add(new DebugMenuListItem("File Manager", "placeholder", R.id.action_debugMenuTopFragment_to_debugMenuFileManagerTesterFragment, true));
 
         DebugMenuListItemAdapter adapter = new DebugMenuListItemAdapter(debugMenuListItems);
         recyclerView.setAdapter(adapter);
diff --git a/feature/debug/src/main/res/layout/fragment_debug_menu_doc_processor_tester.xml b/feature/debug/src/main/res/layout/fragment_debug_menu_doc_processor_tester.xml
new file mode 100644
index 00000000..bb931a16
--- /dev/null
+++ b/feature/debug/src/main/res/layout/fragment_debug_menu_doc_processor_tester.xml
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:theme="@style/Theme.Lacerta"
+    tools:context=".DebugMenuDocProcessorTesterFragment" >
+
+    <LinearLayout
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="1dp"
+        android:layout_marginEnd="1dp"
+        android:orientation="vertical"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
+
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/button_gen_random_img"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:text="Generate random image" />
+
+        </LinearLayout>
+    </LinearLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/feature/debug/src/main/res/layout/fragment_debug_menu_file_manager_tester.xml b/feature/debug/src/main/res/layout/fragment_debug_menu_file_manager_tester.xml
new file mode 100644
index 00000000..3b0c30b9
--- /dev/null
+++ b/feature/debug/src/main/res/layout/fragment_debug_menu_file_manager_tester.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".DebugMenuFileManagerTesterFragment">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <EditText
+            android:id="@+id/edit_text_dir_name"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"/>
+
+        <Button
+            android:id="@+id/button_create_directory"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="Create dir" />
+        <Button
+            android:id="@+id/button_dir_list"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="List item in current" />
+
+        <Button
+            android:id="@+id/button_save_item"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="Save Test Image" />
+    </LinearLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/feature/debug/src/main/res/navigation/feature_debug_internal_navigation.xml b/feature/debug/src/main/res/navigation/feature_debug_internal_navigation.xml
index c460c937..0295d332 100644
--- a/feature/debug/src/main/res/navigation/feature_debug_internal_navigation.xml
+++ b/feature/debug/src/main/res/navigation/feature_debug_internal_navigation.xml
@@ -19,6 +19,9 @@
         <action
             android:id="@+id/action_debugMenuTopFragment_to_scannerDataManagerStubFragment"
             app:destination="@id/scannerDataManagerStubFragment" />
+        <action
+            android:id="@+id/action_debugMenuTopFragment_to_debugMenuFileManagerTesterFragment"
+            app:destination="@id/debugMenuFileManagerTesterFragment" />
     </fragment>
     <fragment
         android:id="@+id/debugMenuMetaDataFragment"
@@ -51,4 +54,9 @@
         android:id="@+id/scannerDataManagerStubFragment"
         android:name="one.nem.lacerta.component.scanner.ScannerDataManagerStubFragment"
         android:label="ScannerDataManagerStubFragment" />
+    <fragment
+        android:id="@+id/debugMenuFileManagerTesterFragment"
+        android:name="one.nem.lacerta.feature.debug.DebugMenuFileManagerTesterFragment"
+        android:label="fragment_debug_menu_file_manager_tester"
+        tools:layout="@layout/fragment_debug_menu_file_manager_tester" />
 </navigation>
\ No newline at end of file
diff --git a/model/src/main/java/one/nem/lacerta/model/document/internal/XmlMetaModel.java b/model/src/main/java/one/nem/lacerta/model/document/internal/XmlMetaModel.java
new file mode 100644
index 00000000..3bbdeb4a
--- /dev/null
+++ b/model/src/main/java/one/nem/lacerta/model/document/internal/XmlMetaModel.java
@@ -0,0 +1,104 @@
+package one.nem.lacerta.model.document.internal;
+
+import java.util.ArrayList;
+
+public class XmlMetaModel {
+
+    String title;
+    String author;
+    String description;
+//    Date created;
+//    Date updated;
+    String defaultBranch;
+    ArrayList<XmlMetaPageModel> pages;
+
+    // Constructor
+
+    public XmlMetaModel() {
+    }
+
+    public XmlMetaModel(String title, String author, String description, String defaultBranch, ArrayList<XmlMetaPageModel> pages) {
+        this.title = title;
+        this.author = author;
+        this.description = description;
+        this.defaultBranch = defaultBranch;
+        this.pages = pages;
+    }
+
+
+    // Getter
+
+    public String getTitle() {
+        return title;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public String getDefaultBranch() {
+        return defaultBranch;
+    }
+
+    public ArrayList<XmlMetaPageModel> getPages() {
+        return pages;
+    }
+
+    // Setter
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public void setDefaultBranch(String defaultBranch) {
+        this.defaultBranch = defaultBranch;
+    }
+
+    public void setPages(ArrayList<XmlMetaPageModel> pages) {
+        this.pages = pages;
+    }
+
+    // Public Methods
+
+    public void addPage(XmlMetaPageModel page) {
+        this.pages.add(page);
+    }
+
+    public void addPageAfterIndex(int index, XmlMetaPageModel page) {
+        this.pages.add(index, page);
+
+        //Update index
+        this.updateIndex();
+    }
+
+    public void removePage(XmlMetaPageModel page) {
+        this.pages.remove(page);
+    }
+
+    public void removePageAtIndex(int index) {
+        this.pages.remove(index);
+
+        //Update index
+        this.updateIndex();
+    }
+
+    // Internal Methods
+    private void updateIndex() { // TODO-rca: 効率悪そう
+        for (int i = 0; i < this.pages.size(); i++) {
+            this.pages.get(i).setIndex(i);
+        }
+    }
+
+}
diff --git a/model/src/main/java/one/nem/lacerta/model/document/internal/XmlMetaPageModel.java b/model/src/main/java/one/nem/lacerta/model/document/internal/XmlMetaPageModel.java
new file mode 100644
index 00000000..2a4d0e5a
--- /dev/null
+++ b/model/src/main/java/one/nem/lacerta/model/document/internal/XmlMetaPageModel.java
@@ -0,0 +1,37 @@
+package one.nem.lacerta.model.document.internal;
+
+public class XmlMetaPageModel {
+
+    int index;
+    String filename;
+
+    // Constructor
+
+    public XmlMetaPageModel() {
+    }
+
+    public XmlMetaPageModel(int index, String filename) {
+        this.index = index;
+        this.filename = filename;
+    }
+
+    // Getter
+
+    public int getIndex() {
+        return index;
+    }
+
+    public String getFilename() {
+        return filename;
+    }
+
+    // Setter
+
+    public void setIndex(int index) {
+        this.index = index;
+    }
+
+    public void setFilename(String filename) {
+        this.filename = filename;
+    }
+}
diff --git a/processor/build.gradle b/processor/build.gradle
index cc9c26a7..ec1ea9b1 100644
--- a/processor/build.gradle
+++ b/processor/build.gradle
@@ -32,4 +32,16 @@ dependencies {
     testImplementation libs.junit
     androidTestImplementation libs.androidx.test.ext.junit
     androidTestImplementation libs.androidx.test.espresso.core
+
+    // DI
+    implementation libs.com.google.dagger.hilt.android
+    annotationProcessor libs.com.google.dagger.hilt.compiler
+
+    // JGit
+    implementation 'org.eclipse.jgit:org.eclipse.jgit:6.8.0.202311291450-r'
+
+    implementation project(':model')
+    implementation project(':source')
+    implementation project(':utils')
+    implementation project(':data')
 }
\ No newline at end of file
diff --git a/processor/src/main/java/one/nem/lacerta/processor/DocumentProcessor.java b/processor/src/main/java/one/nem/lacerta/processor/DocumentProcessor.java
new file mode 100644
index 00000000..b611e6c1
--- /dev/null
+++ b/processor/src/main/java/one/nem/lacerta/processor/DocumentProcessor.java
@@ -0,0 +1,24 @@
+package one.nem.lacerta.processor;
+
+import android.graphics.Bitmap;
+
+public interface DocumentProcessor {
+
+    // ページ操作
+    void addNewPageToLast(Bitmap bitmap);
+    void addNewPagesToLast(Bitmap[] bitmaps);
+    void addNewPageAfterIndex(Bitmap bitmap, int index);
+    void addNewPageBeforeIndex(Bitmap bitmap, int index);
+    void removePageAtIndex(int index);
+
+    // 更新
+    void updatePageAtIndex(Bitmap bitmap, int index);
+
+    // ページ取得
+    Bitmap getPageAtIndex(int index);
+    int getPageCount();
+
+    void close();
+    void init();
+
+}
diff --git a/processor/src/main/java/one/nem/lacerta/processor/factory/DocumentProcessorFactory.java b/processor/src/main/java/one/nem/lacerta/processor/factory/DocumentProcessorFactory.java
new file mode 100644
index 00000000..2741a8a9
--- /dev/null
+++ b/processor/src/main/java/one/nem/lacerta/processor/factory/DocumentProcessorFactory.java
@@ -0,0 +1,10 @@
+package one.nem.lacerta.processor.factory;
+
+import dagger.assisted.AssistedFactory;
+import one.nem.lacerta.model.document.DocumentDetail;
+import one.nem.lacerta.processor.impl.DocumentProcessorImpl;
+
+@AssistedFactory
+public interface DocumentProcessorFactory {
+    DocumentProcessorImpl create(DocumentDetail documentDetail);
+}
diff --git a/processor/src/main/java/one/nem/lacerta/processor/impl/DocumentProcessorImpl.java b/processor/src/main/java/one/nem/lacerta/processor/impl/DocumentProcessorImpl.java
new file mode 100644
index 00000000..4056792f
--- /dev/null
+++ b/processor/src/main/java/one/nem/lacerta/processor/impl/DocumentProcessorImpl.java
@@ -0,0 +1,177 @@
+package one.nem.lacerta.processor.impl;
+
+import android.graphics.Bitmap;
+
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.UUID;
+
+import dagger.assisted.Assisted;
+import dagger.assisted.AssistedInject;
+import one.nem.lacerta.model.document.internal.XmlMetaPageModel;
+import one.nem.lacerta.processor.DocumentProcessor;
+
+import one.nem.lacerta.model.document.DocumentDetail;
+
+import one.nem.lacerta.model.document.internal.XmlMetaModel;
+import one.nem.lacerta.source.file.FileManager;
+import one.nem.lacerta.source.file.factory.FileManagerFactory;
+
+import one.nem.lacerta.utils.LacertaLogger;
+
+import one.nem.lacerta.utils.XmlMetaParser;
+
+
+public class DocumentProcessorImpl implements DocumentProcessor{
+
+    // Magic Numbers
+    private static final String DEFAULT_SAVE_DIR = "raw";
+
+    // Variables
+    private final DocumentDetail documentDetail;
+    private XmlMetaModel xmlMetaModel;
+    private Path documentRootPath;
+    private FileManager fileManager;
+
+    // Injection
+    private final FileManagerFactory fileManagerFactory;
+    private final LacertaLogger logger;
+    private final XmlMetaParser xmlMetaParser;
+    @AssistedInject
+    public DocumentProcessorImpl(FileManagerFactory fileManagerFactory, LacertaLogger logger, XmlMetaParser xmlMetaParser, @Assisted DocumentDetail documentDetail) {
+        this.fileManagerFactory = fileManagerFactory;
+        this.logger = logger;
+        this.xmlMetaParser = xmlMetaParser;
+        if (documentDetail == null) {
+            throw new IllegalArgumentException("documentDetail must not be null");
+        }
+        this.documentDetail = documentDetail;
+    }
+
+    @Override
+    public void init() {
+        logger.debug("init", "called");
+        // Init Variables
+        this.documentRootPath = this.documentDetail.getPath().getFullPath();
+        logger.debug("init", "documentRootPath: " + this.documentRootPath);
+
+        this.fileManager = fileManagerFactory.create(this.documentRootPath); //Initialize FileManager
+        logger.debug("init", "fileManager created");
+
+        this.fileManager.autoCreateDir(this.documentRootPath);
+
+        // rawディレクトリInit
+        this.fileManager.autoCreateDir(DEFAULT_SAVE_DIR);
+
+        // xmlファイルの読み込み
+        if (fileManager.isExist("meta.xml")) {
+            logger.debug("init", "meta.xml found");
+            try {
+                xmlMetaModel = xmlMetaParser.deserialize(this.fileManager.loadDocument("meta.xml"));
+            } catch (Exception e) {
+                logger.debug("init", "meta.xml parse failed");
+                logger.trace("init", e.getMessage());
+            }
+        } else {
+            logger.debug("init", "meta.xml not found");
+            xmlMetaModel = new XmlMetaModel();
+
+            xmlMetaModel.setTitle(this.documentDetail.getMeta().getTitle());
+            xmlMetaModel.setAuthor(this.documentDetail.getAuthor());
+            xmlMetaModel.setDescription(""); // FIXME-rca:
+            xmlMetaModel.setDefaultBranch(this.documentDetail.getDefaultBranch());
+            xmlMetaModel.setPages(new ArrayList<>());
+
+            try {
+                this.fileManager.saveDocument(xmlMetaParser.serialize(xmlMetaModel), "meta.xml");
+                logger.debug("init", "meta.xml saved");
+            } catch (Exception e) {
+                logger.error("init", "meta.xml save failed");
+                logger.trace("init", e.getMessage());
+            }
+        }
+
+        logger.info("init", "finished");
+    }
+
+    @Override
+    public void addNewPageToLast(Bitmap bitmap) {
+        logger.debug("addNewPageToLast", "called");
+        String filename = UUID.randomUUID().toString() + ".png"; // TODO-rca: 拡張子を動的にする
+
+        // FileManager
+        if (this.fileManager.getCurrentDir().equals(this.documentRootPath.resolve(DEFAULT_SAVE_DIR))) { // TODO-rca: 効率化
+            logger.debug("addNewPageToLast", "currentDir is documentRootPath");
+        } else {
+            logger.debug("addNewPageToLast", "currentDir is not documentRootPath");
+            this.fileManager.backRootDir();
+            this.fileManager.autoCreateDir(DEFAULT_SAVE_DIR);
+            this.fileManager.changeDir(DEFAULT_SAVE_DIR);
+        }
+        logger.debug("addNewPageToLast", "DirInit finished");
+
+        // Save file
+        this.fileManager.saveBitmapAtCurrent(bitmap, filename);
+
+        // Update meta
+        XmlMetaPageModel page = new XmlMetaPageModel();
+        page.setIndex(xmlMetaModel.getPages().size() + 1);
+        page.setFilename(filename);
+        xmlMetaModel.addPage(page);
+    }
+
+    @Override
+    public void addNewPagesToLast(Bitmap[] bitmaps) {
+        logger.debug("addNewPagesToLast", "called");
+
+        for (Bitmap bitmap : bitmaps) {
+            addNewPageToLast(bitmap);
+        } // TODO-rca: 効率悪いので改善する
+    }
+
+    @Override
+    public void addNewPageAfterIndex(Bitmap bitmap, int index) {
+
+    }
+
+    @Override
+    public void addNewPageBeforeIndex(Bitmap bitmap, int index) {
+
+    }
+
+    @Override
+    public void removePageAtIndex(int index) {
+
+    }
+
+    @Override
+    public void updatePageAtIndex(Bitmap bitmap, int index) {
+
+    }
+
+    @Override
+    public Bitmap getPageAtIndex(int index) {
+        return null;
+    }
+
+    @Override
+    public int getPageCount() {
+        return 0;
+    }
+
+    @Override
+    public void close() {
+        logger.debug("close", "called");
+        // TODO-rca: ここでxmlファイルを保存する
+        this.fileManager.backRootDir();
+
+        try {
+            this.fileManager.saveDocument(xmlMetaParser.serialize(xmlMetaModel), "meta.xml");
+            logger.debug("close", "meta.xml saved");
+        } catch (Exception e) {
+            logger.error("close", "meta.xml save failed");
+            logger.trace("close", e.getMessage());
+        }
+        logger.info("close", "finished");
+    }
+}
diff --git a/processor/src/main/java/one/nem/lacerta/processor/impl/placeholder b/processor/src/main/java/one/nem/lacerta/processor/impl/placeholder
new file mode 100644
index 00000000..e69de29b
diff --git a/processor/src/main/java/one/nem/lacerta/processor/module/DocumentProcessorModule.java b/processor/src/main/java/one/nem/lacerta/processor/module/DocumentProcessorModule.java
new file mode 100644
index 00000000..b4456813
--- /dev/null
+++ b/processor/src/main/java/one/nem/lacerta/processor/module/DocumentProcessorModule.java
@@ -0,0 +1,16 @@
+package one.nem.lacerta.processor.module;
+
+import dagger.assisted.Assisted;
+import dagger.assisted.AssistedInject;
+import one.nem.lacerta.model.document.DocumentDetail;
+
+public class DocumentProcessorModule {
+
+    private final DocumentDetail documentDetail;
+
+    @AssistedInject
+    public DocumentProcessorModule(@Assisted DocumentDetail documentDetail) {
+        this.documentDetail = documentDetail;
+    }
+
+}
diff --git a/processor/src/main/java/one/nem/lacerta/processor/module/placeholder b/processor/src/main/java/one/nem/lacerta/processor/module/placeholder
new file mode 100644
index 00000000..e69de29b
diff --git a/processor/src/main/java/one/nem/lacerta/processor/placeholder b/processor/src/main/java/one/nem/lacerta/processor/placeholder
new file mode 100644
index 00000000..e69de29b
diff --git a/processor/src/main/res/values/strings.xml b/processor/src/main/res/values/strings.xml
new file mode 100644
index 00000000..6048840e
--- /dev/null
+++ b/processor/src/main/res/values/strings.xml
@@ -0,0 +1,4 @@
+<resources>
+    <!-- TODO: Remove or change this placeholder text -->
+    <string name="hello_blank_fragment">Hello blank fragment</string>
+</resources>
\ No newline at end of file
diff --git a/source/src/main/java/one/nem/lacerta/source/file/FileManager.java b/source/src/main/java/one/nem/lacerta/source/file/FileManager.java
new file mode 100644
index 00000000..91dc217b
--- /dev/null
+++ b/source/src/main/java/one/nem/lacerta/source/file/FileManager.java
@@ -0,0 +1,59 @@
+package one.nem.lacerta.source.file;
+
+import android.graphics.Bitmap;
+
+import org.w3c.dom.Document;
+
+import java.io.File;
+import java.nio.file.Path;
+import java.util.List;
+
+
+/** @noinspection unused*/
+public interface FileManager {
+
+    Path getRootDir();
+    Path getCurrentDir();
+
+    void changeDir(String dirName); //cd
+    void changeDir(Path path); //cd
+    void backDir(); //cd ..
+    void backRootDir(); //cd /
+    List<Path> getList();
+    void createDir(String dirName);
+    void createDir(Path path);
+    void removeDir(String dirName);
+    void removeDir(Path path);
+
+    File createFile(String fileName);
+    void removeFile(String fileName);
+
+    File getFile(String fileName);
+    File getFile(Path path);
+
+    String loadText(String fileName);
+    String loadText(Path path);
+
+    void saveText(String text, String fileName);
+    void saveText(String text, Path path);
+
+    void saveDocument(Document document, String fileName);
+    void saveDocument(Document document, Path path);
+
+    Document loadDocument(String fileName);
+    Document loadDocument(Path path);
+
+
+    boolean isExist(Path path);
+    boolean isExist(String fileName);
+
+    void autoCreateDir(Path path);
+    void autoCreateDir(String dirName);
+
+    void autoCreateToCurrentDir();
+
+    void saveBitmapAtCurrent(Bitmap bitmap, String fileName);
+    Bitmap loadBitmap(Path path);
+    void removeBitmap(Path path);
+
+}
diff --git a/source/src/main/java/one/nem/lacerta/source/file/factory/FileManagerFactory.java b/source/src/main/java/one/nem/lacerta/source/file/factory/FileManagerFactory.java
new file mode 100644
index 00000000..e5272020
--- /dev/null
+++ b/source/src/main/java/one/nem/lacerta/source/file/factory/FileManagerFactory.java
@@ -0,0 +1,11 @@
+package one.nem.lacerta.source.file.factory;
+
+import java.nio.file.Path;
+
+import dagger.assisted.AssistedFactory;
+import one.nem.lacerta.source.file.impl.FileManagerImpl;
+
+@AssistedFactory
+public interface FileManagerFactory {
+    FileManagerImpl create(Path rootDir);
+}
diff --git a/source/src/main/java/one/nem/lacerta/source/file/factory/placeholder b/source/src/main/java/one/nem/lacerta/source/file/factory/placeholder
new file mode 100644
index 00000000..e69de29b
diff --git a/source/src/main/java/one/nem/lacerta/source/file/impl/FileManagerImpl.java b/source/src/main/java/one/nem/lacerta/source/file/impl/FileManagerImpl.java
new file mode 100644
index 00000000..fe8773ca
--- /dev/null
+++ b/source/src/main/java/one/nem/lacerta/source/file/impl/FileManagerImpl.java
@@ -0,0 +1,347 @@
+package one.nem.lacerta.source.file.impl;
+
+import android.graphics.Bitmap;
+
+import org.w3c.dom.Document;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.nio.file.DirectoryStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.stream.StreamResult;
+
+import dagger.assisted.Assisted;
+import dagger.assisted.AssistedInject;
+import one.nem.lacerta.source.file.FileManager;
+
+import one.nem.lacerta.utils.LacertaLogger;
+
+public class FileManagerImpl implements FileManager {
+
+    // RootDir
+    private Path rootDir;
+
+    // CurrentDir
+    private Path currentDir;
+
+    // Internal Methods
+    private Path convertPath(String path) {
+        Path convertedPath = currentDir.resolve(path);
+        if (convertedPath.startsWith(rootDir)) { // 異常なパスの場合はnullを返す // TODO-rca: エラーハンドリング
+            return convertedPath;
+        } else {
+            return null;
+        }
+    }
+
+    // Injection
+    private LacertaLogger logger;
+
+    @AssistedInject
+    public FileManagerImpl(LacertaLogger logger, @Assisted Path rootDir) {
+        this.logger = logger;
+        this.rootDir = rootDir;
+        this.currentDir = rootDir;
+    }
+
+    @Override
+    public Path getRootDir() {
+        return rootDir;
+    }
+
+    @Override
+    public Path getCurrentDir() {
+        return currentDir;
+    }
+
+    @Override
+    public void changeDir(String dirName) {
+        this.currentDir = rootDir.resolve(dirName);
+    }
+
+    @Override
+    public void changeDir(Path path) {
+        if (path.startsWith(rootDir)) {
+            this.currentDir = path;
+        }
+        else {
+            logger.debug("changeDir", "invalid path: " + path);
+            // TODO-rca: 例外を投げる
+        }
+    }
+
+    @Override
+    public void backDir() {
+        this.currentDir = currentDir.getParent();
+    }
+
+    @Override
+    public void backRootDir() {
+        this.currentDir = rootDir;
+    }
+
+    @Override
+    public List<Path> getList() {
+        List<Path> list = new ArrayList<>();
+        try (DirectoryStream<Path> stream = Files.newDirectoryStream(currentDir)) {
+            for (Path entry : stream) { // TODO-rca: エラーハンドリング, 効率化
+                list.add(entry);
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return list;
+    }
+
+    @Override
+    public void createDir(String dirName) {
+        //ディレクトリ作成
+        logger.debug("createDir", "called");
+
+        Path path = currentDir.resolve(dirName);
+        logger.debug("createDir", "path: " + path);
+        try {
+            Files.createDirectory(path);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void createDir(Path path) {
+        logger.debug("createDir", "called");
+        try {
+            Files.createDirectory(path);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void removeDir(String dirName) {
+        logger.debug("removeDir", "called");
+        currentDir.resolve(dirName).toFile().delete(); // TODO-rca: エラーハンドリング
+    }
+
+    @Override
+    public void removeDir(Path path) {
+        logger.debug("removeDir", "called");
+        path.toFile().delete(); // TODO-rca: エラーハンドリング
+    }
+
+
+    @Override
+    public File createFile(String fileName) {
+        logger.debug("createFile", "called");
+        return currentDir.resolve(fileName).toFile();
+    }
+
+    @Override
+    public void removeFile(String fileName) {
+        logger.debug("removeFile", "called");
+        currentDir.resolve(fileName).toFile().delete(); // TODO-rca: エラーハンドリング
+    }
+
+    @Override
+    public File getFile(String fileName) {
+        logger.debug("getFile", "called");
+        return currentDir.resolve(fileName).toFile();
+    }
+
+    @Override
+    public File getFile(Path path) {
+        logger.debug("getFile", "called");
+        return path.toFile();
+    }
+
+    @Override
+    public String loadText(String fileName) { // TODO-rca: 統合
+        try(FileInputStream fileInputStream = new FileInputStream(currentDir.resolve(fileName).toFile())) {
+            byte[] bytes = new byte[fileInputStream.available()];
+            fileInputStream.read(bytes); // TODO-rca: エラーハンドリング
+            return new String(bytes);
+        } catch (IOException e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    @Override
+    public String loadText(Path path) {
+        try(FileInputStream fileInputStream = new FileInputStream(path.toFile())) {
+            byte[] bytes = new byte[fileInputStream.available()];
+            fileInputStream.read(bytes); // TODO-rca: エラーハンドリング
+            return new String(bytes);
+        } catch (IOException e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    @Override
+    public void saveText(String text, String fileName) { // TODO-rca: リファクタリング // TODO-rca: 統合
+        if (isExist(fileName)) {
+            logger.debug("saveText", "file already exists");
+            // Overwrite
+            try {
+                Files.write(currentDir.resolve(fileName), text.getBytes());
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+        else {
+            try {
+                Files.createFile(currentDir.resolve(fileName));
+                Files.write(currentDir.resolve(fileName), text.getBytes());
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+
+    }
+
+    @Override
+    public void saveText(String text, Path path) {
+        if (isExist(path)) {
+            logger.debug("saveText", "file already exists");
+            // Overwrite
+            try {
+                Files.write(path, text.getBytes());
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+        else {
+            try {
+                Files.createFile(path);
+                Files.write(path, text.getBytes());
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    @Override
+    public void saveDocument(Document document, String fileName) {
+        try {
+            TransformerFactory transformerFactory = TransformerFactory.newInstance();
+            Transformer transformer = transformerFactory.newTransformer();
+            DOMSource source = new DOMSource(document);
+            File file = createFile(fileName);
+            StreamResult result = new StreamResult(file);
+            transformer.transform(source, result);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void saveDocument(Document document, Path path) {
+        // TODO-rca 実装する
+    }
+
+    @Override
+    public Document loadDocument(String fileName) {
+        try {
+            File file = getFile(fileName);
+            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
+            DocumentBuilder builder = factory.newDocumentBuilder();
+            Document document = builder.parse(file);
+            return document;
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    @Override
+    public Document loadDocument(Path path) {
+        // TODO-rca 実装する
+        return null;
+    }
+
+    @Override
+    public boolean isExist(Path path) {
+        logger.debug("isExist", "called");
+        return Files.exists(path);
+    }
+
+    @Override
+    public boolean isExist(String fileName) {
+        logger.debug("isExist", "called");
+        return Files.exists(currentDir.resolve(fileName));
+    }
+
+    @Override
+    public void autoCreateDir(Path path) {
+        logger.debug("autoCreateDir", "called");
+        if (!Files.exists(path)) {
+            try {
+                Files.createDirectories(path);
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    @Override
+    public void autoCreateDir(String dirName) {
+        logger.debug("autoCreateDir", "called");
+        if (!Files.exists(currentDir.resolve(dirName))) {
+            try {
+                Files.createDirectories(currentDir.resolve(dirName));
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    @Override
+    public void autoCreateToCurrentDir() {
+        logger.debug("autoGenerateToCurrentDir", "called");
+        if (isExist(currentDir)) {
+            logger.debug("autoGenerateToCurrentDir", "currentDir already exists");
+            return;
+        }
+        else {
+            try {
+                Files.createDirectories(currentDir);
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+
+    @Override
+    public void saveBitmapAtCurrent(Bitmap bitmap, String fileName) { // TODO-rca: ファイル形式を変更できるようにする？
+        logger.debug("saveBitmapAtCurrent", "called");
+        try {
+            File file = currentDir.resolve(fileName).toFile();
+            bitmap.compress(Bitmap.CompressFormat.PNG, 100, Files.newOutputStream(file.toPath()));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public Bitmap loadBitmap(Path path) {
+        return null;
+    }
+
+    @Override
+    public void removeBitmap(Path path) {
+
+    }
+
+}
diff --git a/source/src/main/java/one/nem/lacerta/source/file/impl/placeholder b/source/src/main/java/one/nem/lacerta/source/file/impl/placeholder
new file mode 100644
index 00000000..e69de29b
diff --git a/source/src/main/java/one/nem/lacerta/source/file/module/FileManagerModule.java b/source/src/main/java/one/nem/lacerta/source/file/module/FileManagerModule.java
new file mode 100644
index 00000000..68a35913
--- /dev/null
+++ b/source/src/main/java/one/nem/lacerta/source/file/module/FileManagerModule.java
@@ -0,0 +1,20 @@
+package one.nem.lacerta.source.file.module;
+
+import java.nio.file.Path;
+
+import dagger.assisted.Assisted;
+import dagger.assisted.AssistedInject;
+
+public class FileManagerModule {
+
+    private final Path rootDir;
+
+    @AssistedInject
+    public FileManagerModule(@Assisted Path rootDir) {
+        this.rootDir = rootDir;
+    }
+
+    public Path getRootDir() {
+        return rootDir;
+    }
+}
diff --git a/source/src/main/java/one/nem/lacerta/source/file/module/placeholder b/source/src/main/java/one/nem/lacerta/source/file/module/placeholder
new file mode 100644
index 00000000..e69de29b
diff --git a/utils/build.gradle b/utils/build.gradle
index db7197a6..1aab90c9 100644
--- a/utils/build.gradle
+++ b/utils/build.gradle
@@ -37,5 +37,6 @@ dependencies {
     implementation libs.com.google.dagger.hilt.android
     annotationProcessor libs.com.google.dagger.hilt.compiler
 
-    //
+    // model
+    implementation project(':model')
 }
\ No newline at end of file
diff --git a/utils/src/main/java/one/nem/lacerta/utils/XmlMetaParser.java b/utils/src/main/java/one/nem/lacerta/utils/XmlMetaParser.java
new file mode 100644
index 00000000..9aeac296
--- /dev/null
+++ b/utils/src/main/java/one/nem/lacerta/utils/XmlMetaParser.java
@@ -0,0 +1,13 @@
+package one.nem.lacerta.utils;
+
+import org.w3c.dom.Document;
+
+import one.nem.lacerta.model.document.internal.XmlMetaModel;
+
+public interface XmlMetaParser {
+
+    XmlMetaModel deserialize(Document document);
+
+    Document serialize(XmlMetaModel meta);
+
+}
diff --git a/utils/src/main/java/one/nem/lacerta/utils/impl/XmlMetaParserImpl.java b/utils/src/main/java/one/nem/lacerta/utils/impl/XmlMetaParserImpl.java
new file mode 100644
index 00000000..efc6b1b3
--- /dev/null
+++ b/utils/src/main/java/one/nem/lacerta/utils/impl/XmlMetaParserImpl.java
@@ -0,0 +1,98 @@
+package one.nem.lacerta.utils.impl;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+
+import java.util.ArrayList;
+
+import javax.inject.Inject;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+
+import one.nem.lacerta.model.document.internal.XmlMetaModel;
+import one.nem.lacerta.model.document.internal.XmlMetaPageModel;
+import one.nem.lacerta.utils.XmlMetaParser;
+
+import one.nem.lacerta.utils.LacertaLogger;
+
+public class XmlMetaParserImpl implements XmlMetaParser{
+
+    @Inject
+    LacertaLogger logger;
+
+    @Inject
+    public XmlMetaParserImpl() {
+    }
+
+    @Override
+    public XmlMetaModel deserialize(Document document) {
+        logger.debug("deserialize", "called");
+        try {
+            Element rootElement = document.getDocumentElement();
+
+            XmlMetaModel meta = new XmlMetaModel();
+
+            meta.setTitle(rootElement.getElementsByTagName("title").item(0).getTextContent());
+            meta.setAuthor(rootElement.getElementsByTagName("author").item(0).getTextContent());
+            meta.setDescription(rootElement.getElementsByTagName("description").item(0).getTextContent());
+            meta.setDefaultBranch(rootElement.getElementsByTagName("defaultBranch").item(0).getTextContent());
+
+            ArrayList<XmlMetaPageModel> pages = new ArrayList<>();
+            for(int i = 0; i < rootElement.getElementsByTagName("pages").getLength(); i++) {
+                Element pageElement = (Element) rootElement.getElementsByTagName("page").item(i);
+                XmlMetaPageModel page = new XmlMetaPageModel();
+                page.setIndex(Integer.parseInt(pageElement.getElementsByTagName("index").item(0).getTextContent()));
+                page.setFilename(pageElement.getElementsByTagName("filename").item(0).getTextContent());
+                pages.add(page);
+            }
+
+            meta.setPages(pages);
+
+            return meta;
+        } catch (Exception e) {
+            logger.error("deserialize", "something wrong");
+            logger.trace("deserialize", e.getMessage());
+        }
+        return null;
+    }
+    @Override
+    public Document serialize(XmlMetaModel meta) {
+        logger.debug("serialize", "called");
+        try {
+            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
+            DocumentBuilder builder = factory.newDocumentBuilder();
+            Document document = builder.newDocument();
+
+            Element rootElement = document.createElement("meta");
+
+            appendElement(document, rootElement, "title", meta.getTitle());
+            appendElement(document, rootElement, "author", meta.getAuthor());
+            appendElement(document, rootElement, "description", meta.getDescription());
+            appendElement(document, rootElement, "defaultBranch", meta.getDefaultBranch());
+
+            Element pagesElement = document.createElement("pages");
+            for(XmlMetaPageModel page : meta.getPages()) {
+                Element pageElement = document.createElement("page");
+                appendElement(document, pageElement, "index", String.valueOf(page.getIndex()));
+                appendElement(document, pageElement, "filename", page.getFilename());
+                pagesElement.appendChild(pageElement);
+            }
+
+            rootElement.appendChild(pagesElement);
+
+            document.appendChild(rootElement);
+
+            return document;
+        } catch (Exception e) {
+            logger.error("serialize", "something wrong");
+            logger.trace("serialize", e.getMessage());
+        }
+        return null;
+    }
+    // Internal Methods
+    private void appendElement(Document document, Element rootElement, String name, String textContent) {
+        Element element = document.createElement(name);
+        element.setTextContent(textContent);
+        rootElement.appendChild(element);
+    }
+}
diff --git a/utils/src/main/java/one/nem/lacerta/utils/module/XmlMetaParserModule.java b/utils/src/main/java/one/nem/lacerta/utils/module/XmlMetaParserModule.java
new file mode 100644
index 00000000..8e2f61f2
--- /dev/null
+++ b/utils/src/main/java/one/nem/lacerta/utils/module/XmlMetaParserModule.java
@@ -0,0 +1,17 @@
+package one.nem.lacerta.utils.module;
+
+
+import dagger.Binds;
+import dagger.Module;
+import dagger.hilt.InstallIn;
+import dagger.hilt.components.SingletonComponent;
+
+import one.nem.lacerta.utils.XmlMetaParser;
+import one.nem.lacerta.utils.impl.XmlMetaParserImpl;
+@Module
+@InstallIn(SingletonComponent.class)
+abstract public class XmlMetaParserModule {
+
+    @Binds
+    public abstract XmlMetaParser bindXmlMetaParser(XmlMetaParserImpl impl);
+}