diff --git a/common/src/main/java/net/kunmc/lab/configlib/CollectionValue.java b/common/src/main/java/net/kunmc/lab/configlib/CollectionValue.java
index cc66ecf..b4981f2 100644
--- a/common/src/main/java/net/kunmc/lab/configlib/CollectionValue.java
+++ b/common/src/main/java/net/kunmc/lab/configlib/CollectionValue.java
@@ -22,11 +22,11 @@ public CollectionValue(T value) {
         super(value);
     }
 
-    protected boolean addableByCommand() {
+    protected final boolean addableByCommand() {
         return addable;
     }
 
-    public U addableByCommand(boolean addable) {
+    public final U addableByCommand(boolean addable) {
         this.addable = addable;
         return ((U) this);
     }
@@ -58,11 +58,11 @@ protected String succeedMessageForAdd(String entryName, T value) {
         return String.format("%sに%sを追加しました.", entryName, elementToString(((E[]) value.toArray())[0]));
     }
 
-    protected boolean removableByCommand() {
+    protected final boolean removableByCommand() {
         return removable;
     }
 
-    public U removableByCommand(boolean removable) {
+    public final U removableByCommand(boolean removable) {
         this.removable = removable;
         return ((U) this);
     }
@@ -94,11 +94,11 @@ protected String succeedMessageForRemove(String entryName, T value) {
         return String.format("%sから%sを削除しました.", entryName, elementToString(((E[]) value.toArray())[0]));
     }
 
-    protected boolean clearableByCommand() {
+    protected final boolean clearableByCommand() {
         return clearable;
     }
 
-    public U clearableByCommand(boolean clearable) {
+    public final U clearableByCommand(boolean clearable) {
         this.clearable = clearable;
         return ((U) this);
     }
diff --git a/common/src/main/java/net/kunmc/lab/configlib/MapValue.java b/common/src/main/java/net/kunmc/lab/configlib/MapValue.java
index cb684bb..764220e 100644
--- a/common/src/main/java/net/kunmc/lab/configlib/MapValue.java
+++ b/common/src/main/java/net/kunmc/lab/configlib/MapValue.java
@@ -23,11 +23,11 @@ public MapValue(Map<K, V> value) {
         super(value);
     }
 
-    protected boolean puttableByCommand() {
+    protected final boolean puttableByCommand() {
         return puttable;
     }
 
-    public T puttableByCommand(boolean puttable) {
+    public final T puttableByCommand(boolean puttable) {
         this.puttable = puttable;
         return ((T) this);
     }
@@ -83,11 +83,11 @@ protected String succeedMessageForPut(String entryName, K k, V v) {
         return String.format("%sに{%s:%s}を追加しました.", entryName, keyToString(k), valueToString(v));
     }
 
-    protected boolean removableByCommand() {
+    protected final boolean removableByCommand() {
         return removable;
     }
 
-    public T removableByCommand(boolean removable) {
+    public final T removableByCommand(boolean removable) {
         this.removable = removable;
         return ((T) this);
     }
@@ -125,7 +125,7 @@ protected String succeedMessageForRemove(String entryName, K k, V v) {
         return String.format("%sから{%s:%s}を削除しました.", entryName, keyToString(k), valueToString(v));
     }
 
-    protected boolean clearableByCommand() {
+    protected final boolean clearableByCommand() {
         return clearable;
     }
 
@@ -139,7 +139,7 @@ public final T onClear(Runnable listener) {
         return ((T) this);
     }
 
-    protected void onClearMap() {
+    protected final void onClearMap() {
         clearListeners.forEach(Runnable::run);
     }
 
diff --git a/common/src/main/java/net/kunmc/lab/configlib/Value.java b/common/src/main/java/net/kunmc/lab/configlib/Value.java
index f4dd397..c8c54ce 100644
--- a/common/src/main/java/net/kunmc/lab/configlib/Value.java
+++ b/common/src/main/java/net/kunmc/lab/configlib/Value.java
@@ -21,20 +21,20 @@ public void value(E value) {
         this.value = value;
     }
 
-    public String description() {
+    public final String description() {
         return description;
     }
 
-    public T description(String description) {
+    public final T description(String description) {
         this.description = description;
         return ((T) this);
     }
 
-    protected boolean listable() {
+    protected final boolean listable() {
         return listable;
     }
 
-    public T listable(boolean listable) {
+    public final T listable(boolean listable) {
         this.listable = listable;
         return ((T) this);
     }
diff --git a/common/src/main/java/net/kunmc/lab/configlib/value/collection/ListValue.java b/common/src/main/java/net/kunmc/lab/configlib/value/collection/ListValue.java
index f06db42..6e536da 100644
--- a/common/src/main/java/net/kunmc/lab/configlib/value/collection/ListValue.java
+++ b/common/src/main/java/net/kunmc/lab/configlib/value/collection/ListValue.java
@@ -9,25 +9,10 @@
 import java.util.stream.Stream;
 
 public abstract class ListValue<E, U extends ListValue<E, U>> extends CollectionValue<List<E>, E, U> implements Iterable<E> {
-    protected transient boolean listable = true;
-    protected transient boolean addable = true;
-    protected transient boolean removable = true;
-    protected transient boolean clearable = true;
-
     public ListValue(List<E> value) {
         super(value);
     }
 
-    @Override
-    public boolean addableByCommand() {
-        return addable;
-    }
-
-    public U addableByCommand(boolean addable) {
-        this.addable = addable;
-        return (U) this;
-    }
-
     @Override
     protected boolean validateForAdd(String entryName, List<E> value, CommandContext ctx) {
         return true;
@@ -38,16 +23,6 @@ protected String invalidValueMessageForAdd(String entryName, List<E> value, Comm
         return "This message can't be shown.";
     }
 
-    @Override
-    public boolean removableByCommand() {
-        return removable;
-    }
-
-    public U removableByCommand(boolean removable) {
-        this.removable = removable;
-        return (U) this;
-    }
-
     @Override
     public boolean validateForRemove(String entryName, List<E> element, CommandContext ctx) {
         return value.containsAll(element);
@@ -62,26 +37,6 @@ protected final String invalidValueMessageForRemove(String entryName, List<E> va
                              entryName);
     }
 
-    @Override
-    public boolean clearableByCommand() {
-        return clearable;
-    }
-
-    public U clearableByCommand(boolean clearable) {
-        this.clearable = clearable;
-        return (U) this;
-    }
-
-    @Override
-    public boolean listable() {
-        return listable;
-    }
-
-    public U listable(boolean listable) {
-        this.listable = listable;
-        return (U) this;
-    }
-
     public int size() {
         return value.size();
     }