diff --git a/src/main/java/dev/felnull/Data/GroupData.java b/src/main/java/dev/felnull/Data/GroupData.java
index b047028..060904b 100644
--- a/src/main/java/dev/felnull/Data/GroupData.java
+++ b/src/main/java/dev/felnull/Data/GroupData.java
@@ -1,7 +1,10 @@
 package dev.felnull.Data;
 
 import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
 
+import java.util.HashMap;
+import java.util.HashSet;
 import java.util.Map;
 import java.util.Set;
 
@@ -12,7 +15,7 @@ public class GroupData {
     public boolean isPrivate; //個人用グループか否か
     public StorageData storageData; //グループ保有のストレージデータ null許容
 
-    public GroupData (String groupName, Set<Player> playerList, Map<Player,String[]> playerPermission, boolean isPrivate, StorageData storageData) {
+    public GroupData (@NotNull String groupName,@NotNull Set<Player> playerList,@NotNull Map<Player,String[]> playerPermission, boolean isPrivate, StorageData storageData) {
         this.groupName = groupName;
         this.playerList = playerList;
         this.playerPermission = playerPermission;
@@ -22,4 +25,21 @@ public GroupData (String groupName, Set<Player> playerList, Map<Player,String[]>
         this.storageData = storageData;
     }
 
+    public GroupData (@NotNull String groupName,@NotNull Player player, boolean isPrivate, StorageData storageData) {
+        this.groupName = groupName;
+
+        //引数で得たプレイヤーをメンバに追加してowner権限を付与する
+        playerList = new HashSet<>();
+        playerPermission = new HashMap<>();
+        playerList.add(player);
+        String[] permission = {GroupPermENUM.OWNER.getPermName()};
+        playerPermission.put(player, permission );
+        //個人用を想定したコンストラクタなのでtrue
+        this.isPrivate = true;
+
+        storageData.groupName = groupName;
+        storageData.groupData = this;
+        this.storageData = storageData;
+    }
+
 }
diff --git a/src/main/java/dev/felnull/Data/StorageData.java b/src/main/java/dev/felnull/Data/StorageData.java
index e110ba8..e1bd17a 100644
--- a/src/main/java/dev/felnull/Data/StorageData.java
+++ b/src/main/java/dev/felnull/Data/StorageData.java
@@ -1,7 +1,8 @@
 package dev.felnull.Data;
 
-import org.bukkit.inventory.Inventory;
+import org.jetbrains.annotations.NotNull;
 
+import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;
 
@@ -10,11 +11,15 @@ public class StorageData {
     public GroupData groupData;//ストレージの所属グループ
     public final Set<String> requireBankPermission;//ストレージ直下の金庫の要求パーミッション(BukkitPermではない)
     public int bankMoney;//ストレージ付属金庫の値
-    public Map<String,InventoryData> storageInventry;//ストレージに含まれているインベントリデータ　キーのStringはページ名
+    @NotNull
+    public Map<String,InventoryData> storageInventory;//ストレージに含まれているインベントリデータ　キーのStringはページ名
 
-    public StorageData(Set<String> requireBankPermission, Map<String,InventoryData> storageInventry, int bankMoney) {
+    public StorageData(@NotNull Set<String> requireBankPermission, Map<String,InventoryData> storageInventory, int bankMoney) {
         this.requireBankPermission = requireBankPermission;
-        this.storageInventry = storageInventry;
+        if(storageInventory == null){
+            storageInventory = new HashMap<>();
+        }
+        this.storageInventory = storageInventory;
         this.bankMoney = bankMoney;
     }
 }