diff --git a/popcorn/Assets/MyGame/Scripts/GameDataManager.cs b/popcorn/Assets/MyGame/Scripts/GameDataManager.cs
index 53c97d6f..863294c2 100644
--- a/popcorn/Assets/MyGame/Scripts/GameDataManager.cs
+++ b/popcorn/Assets/MyGame/Scripts/GameDataManager.cs
@@ -412,7 +412,19 @@ public sealed class GameData {
 
         if (ShopCustomizeLevel < 1)
         {
-            ShopCustomizeLevel = 0;
+            ShopCustomizeLevel = 1;
+        }
+
+        if (ShopCustomizeMyItems.Length < 1)
+        {
+            ShopCustomizeMyItems = new[]
+            {
+                Const.ShopCustomizeDefaultCartId,
+                Const.ShopCustomizeDefaultDecoration1Id,
+                Const.ShopCustomizeDefaultDecoration2Id,
+                Const.ShopCustomizeDefaultStockId,
+                Const.ShopCustomizeDefaultSignBoardId,
+            };
         }
         
         // 追加した要素の初期化用
@@ -437,6 +449,7 @@ public sealed class GameData {
         WaitAddStock = WaitAddStock ?? new ProductStockData{Rarity = ProductRarity.Normal};
         AutoCookProducts = AutoCookProducts ?? Array.Empty<int>();
         ShopCustomizeSettings = ShopCustomizeSettings ?? new ShopCustomizeSettings();
+        ShopCustomizeMyItems = ShopCustomizeMyItems ?? Array.Empty<int>();
     }
     private Dictionary<int, int> ArrayToDictionary(KeyValueOfintint[] array){
         var dictionary = new Dictionary<int, int>();