diff --git a/.idea/deploymentTargetDropDown.xml b/.idea/deploymentTargetDropDown.xml
deleted file mode 100644
index 0c0c3383..00000000
--- a/.idea/deploymentTargetDropDown.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="deploymentTargetDropDown">
-    <value>
-      <entry key="app">
-        <State />
-      </entry>
-    </value>
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 25d74174..81cd856a 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -4,6 +4,7 @@
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
+        <option name="testRunner" value="GRADLE" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
         <option name="gradleJvm" value="jbr-17" />
         <option name="modules">
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 8978d23d..773fe0fb 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/feature/debug/src/main/AndroidManifest.xml b/feature/debug/src/main/AndroidManifest.xml
index 4ae26da0..f1cde5e2 100644
--- a/feature/debug/src/main/AndroidManifest.xml
+++ b/feature/debug/src/main/AndroidManifest.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" >
 
     <application>
         <activity
diff --git a/feature/debug/src/main/java/one/nem/lacerta/feature/debug/DebugClearPrefFragment.java b/feature/debug/src/main/java/one/nem/lacerta/feature/debug/DebugClearPrefFragment.java
new file mode 100644
index 00000000..4c30a56f
--- /dev/null
+++ b/feature/debug/src/main/java/one/nem/lacerta/feature/debug/DebugClearPrefFragment.java
@@ -0,0 +1,26 @@
+package one.nem.lacerta.feature.debug;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import javax.inject.Inject;
+
+import one.nem.lacerta.data.repository.SharedPref;
+
+public class DebugClearPrefFragment extends Fragment {
+    @Inject
+    SharedPref sharedPref;
+
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_fragment_debug_clear_pref);
+    }
+
+    public DebugClearPrefFragment(){
+
+    }
+}
diff --git a/feature/debug/src/main/res/layout/activity_fragment_debug_clear_pref.xml b/feature/debug/src/main/res/layout/activity_fragment_debug_clear_pref.xml
new file mode 100644
index 00000000..befb4db4
--- /dev/null
+++ b/feature/debug/src/main/res/layout/activity_fragment_debug_clear_pref.xml
@@ -0,0 +1,87 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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:orientation="vertical"
+    tools:context=".DebugSharedPrefEditorFragment">
+
+    <RadioGroup
+        android:id="@+id/radioGroupPrefType"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <RadioButton
+            android:id="@+id/radioButtonCommon"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="Common" />
+
+        <RadioButton
+            android:id="@+id/radioButtonUserData"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="UserData" />
+
+    </RadioGroup>
+
+    <com.google.android.material.textview.MaterialTextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Clear pref" />
+
+    <LinearLayout
+        android:id="@+id/ClearLinearLayout"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:weightSum="3">
+
+        <EditText
+            android:id="@+id/clearKeyEditText"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_margin="4dp"
+            android:layout_weight="2"
+            android:hint="Key:Value" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/clearButton"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_margin="4dp"
+            android:layout_weight="1"
+            android:text="Clear" />
+    </LinearLayout>
+
+
+
+        <TextView
+            android:id="@+id/loadValueTextView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="No value..."
+            android:textSize="24sp" />
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginTop="200dp"
+        android:id="@+id/scrollView">
+
+    <TextView
+        android:id="@+id/text_view"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="「Clear」を押すと選択されたデータを削除します" />
+
+
+    </ScrollView>
+
+</LinearLayout>
+