diff --git a/book/plan/03_ocean.md b/book/plan/03_ocean.md
index 464b03b..49b18fb 100644
--- a/book/plan/03_ocean.md
+++ b/book/plan/03_ocean.md
@@ -26,3 +26,10 @@
 
 しかし、取り除くと海が消えます。ロードを待つほかありません。
 
+## 海中でゲームオーバー
+
+`ocean underwater`を使います。海中にいる時間を記録して、その値に応じて溺れるモーション(ゲームオーバー)を追加します。
+
+1. `BP_OceanWavesTangentPlane -> UpdateUnderwaterMask`でoutputの前に変数を作り`++`を入れます。値に応じて条件を指定します。
+2. `BP_OceanWavesTangentPlane -> SetVolumeMID`で`Is Underwater`がありますので、falseの場合は0に戻します。
+
diff --git a/json/v1_syui.json b/json/v1.json
similarity index 100%
rename from json/v1_syui.json
rename to json/v1.json
diff --git a/json/v2_syui.json b/json/v2.json
similarity index 62%
rename from json/v2_syui.json
rename to json/v2.json
index 65be577..93faf4f 100644
--- a/json/v2_syui.json
+++ b/json/v2.json
@@ -1,28 +1,35 @@
 {
   "uri": "at://did:plc:4hqjfn7m6n5hno3doamuhgef/ai.syui.game/syui",
-  "cid": "bafyreiabqdtzydrm247wtof6fdhjkdcijp5p6viru5hbg6ixybxpkp62pm",
+  "cid": "bafyreidsk2dwqvxt2be5qpoehy5au7cuiuqicpesky7bmxrsofrqwnweeq",
   "value": {
     "did": "did:plc:uqzpqmrjnptsxezjx4xuh2mn",
     "pds": "bsky.social",
     "plc": "plc.directory",
     "item": {
-      "card": {
-        "cp": 0,
-        "id": 0,
-        "rare": 0,
-        "count": 0
-      },
-      "coin": {
-        "id": 0,
-        "count": 0
-      },
-      "weapon": {
-        "id": 0,
-        "tp": 0,
-        "type": 0,
-        "count": 0,
-        "attack": 0
-      }
+      "card": [
+        {
+          "cp": 0,
+          "id": 0,
+          "rare": 0,
+          "count": 0
+        }
+      ],
+      "coin": [
+        {
+          "cp": 0,
+          "id": 0,
+          "rare": 0,
+          "count": 0
+        }
+      ],
+      "weapon": [
+        {
+          "cp": 0,
+          "id": 0,
+          "rare": 0,
+          "count": 0
+        }
+      ]
     },
     "$type": "ai.syui.game",
     "handle": "syui.ai",
diff --git a/json/v2_ai.json b/json/v2_ai.json
deleted file mode 100644
index d0ef4ea..0000000
--- a/json/v2_ai.json
+++ /dev/null
@@ -1,53 +0,0 @@
-{
-  "uri": "at://did:plc:4hqjfn7m6n5hno3doamuhgef/ai.syui.game/ai",
-  "cid": "bafyreiey75xm4j4uu5iyexymn4jroj3wxdlhhlivxhzqzqeqyisjfsyiqy",
-  "value": {
-    "did": "did:plc:4hqjfn7m6n5hno3doamuhgef",
-    "pds": "bsky.social",
-    "plc": "plc.directory",
-    "item": {
-      "card": {
-        "cp": 0,
-        "id": 0,
-        "rare": 0,
-        "count": 0
-      },
-      "coin": {
-        "id": 0,
-        "count": 0
-      },
-      "weapon": {
-        "id": 0,
-        "tp": 0,
-        "type": 0,
-        "count": 0,
-        "attack": 0
-      }
-    },
-    "$type": "ai.syui.game",
-    "handle": "yui.syui.ai",
-    "player": {
-      "aiten": 0,
-      "limit": false,
-      "login": false,
-      "gender": "none"
-    },
-    "version": 2,
-    "character": {
-      "ai": {
-        "hp": 1,
-        "lv": 1,
-        "exp": 0,
-        "mode": 2,
-        "rank": 0,
-        "group": "origin",
-        "attack": 0,
-        "season": 0,
-        "critical": 0,
-        "critical_d": 0
-      }
-    },
-    "createdAt": "2020-01-01T00:00:00+09:00",
-    "updatedAt": "2020-01-01T00:00:00+09:00"
-  }
-}
diff --git a/json/default.json b/json/v3.json
similarity index 100%
rename from json/default.json
rename to json/v3.json