diff --git a/CHANGELOG.md b/CHANGELOG.md
index 705c2d9..44728fc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 
+## [5-r.1-beta.2] - 2023-09-28
+
+### Added
+
+* Add a comment for clarity for the function whose usage is not intuitive.
+
+
 ## [5-r.1-beta.1] - 2023-08-17
 
 ### Added
@@ -208,6 +215,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 * Reformat code using Prettier and ESLint.
 
 
+[5-r.1-beta.2]: https://github.com/Live2D/CubismWebFramework/compare/5-r.1-beta.1...5-r.1-beta.2
 [5-r.1-beta.1]: https://github.com/Live2D/CubismWebFramework/compare/4-r.7...5-r.1-beta.1
 [4-r.7]: https://github.com/Live2D/CubismWebFramework/compare/4-r.6.2...4-r.7
 [4-r.6.2]: https://github.com/Live2D/CubismWebFramework/compare/4-r.6.1...4-r.6.2
diff --git a/README.ja.md b/README.ja.md
index d2bec0c..2c96eeb 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -30,14 +30,13 @@ Cubism 5 Editorに搭載された新機能のSDK対応については [こちら
 
 ### Node.js
 
-* 20.5.1
-* 18.17.1
-* 16.20.2
+* 20.7.0
+* 18.18.0
 
 
 ### TypeScript
 
-5.1.6
+5.2.2
 
 
 ## 開発環境構築
@@ -165,9 +164,9 @@ Live2Dコミュニティでは、問題のレポートと機能リクエスト
 SDKの将来についてのフィードバックにも関心があります。Live2Dコミュニティで提案や機能のリクエストを送信できます。このプロセスをより効果的にするために、それらをより明確に定義するのに役立つより多くの情報を含めるようお願いしています。
 
 
-## コミュニティ
+## フォーラム
 
-ユーザー同士でCubism SDKの活用方法の提案や質問をしたい場合は、是非コミュニティをご活用ください。
+ユーザー同士でCubism SDKの活用方法の提案や質問をしたい場合は、是非フォーラムをご活用ください。
 
-- [Live2D 公式コミュニティ](https://creatorsforum.live2d.com/)
-- [Live2D community(English)](https://community.live2d.com/)
+- [Live2D 公式クリエイターズフォーラム](https://creatorsforum.live2d.com/)
+- [Live2D Creator's Forum(English)](https://community.live2d.com/)
diff --git a/README.md b/README.md
index 47f7f87..9994c77 100644
--- a/README.md
+++ b/README.md
@@ -30,13 +30,12 @@ For compatibility with previous versions of Cubism SDK, please refer to [here](h
 
 ### Node.js
 
-* 20.5.1
-* 18.17.1
-* 16.20.2
+* 20.7.0
+* 18.18.0
 
 ### TypeScript
 
-5.1.6
+5.2.2
 
 
 ## Development environment construction
@@ -164,9 +163,9 @@ We are regularly checking issue-reports and feature requests at Live2D Community
 We're also interested in your feedback for the future of the SDK. You can submit a suggestion or feature request at Live2D Community. To make this process more effective, we're asking that you include more information to help define them more clearly.
 
 
-## Community
+## Forum
 
-If you want to suggest or ask questions about how to use the Cubism SDK between users, please use the community.
+If you want to suggest or ask questions about how to use the Cubism SDK between users, please use the forum.
 
-- [Live2D community](https://community.live2d.com/)
-- [Live2D 公式コミュニティ (Japanese)](https://creatorsforum.live2d.com/)
+- [Live2D Creator's Forum](https://community.live2d.com/)
+- [Live2D 公式クリエイターズフォーラム (Japanese)](https://creatorsforum.live2d.com/)
diff --git a/package-lock.json b/package-lock.json
index 12e9a2b..cb39420 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,14 +5,14 @@
   "packages": {
     "": {
       "devDependencies": {
-        "@typescript-eslint/eslint-plugin": "^6.4.0",
-        "@typescript-eslint/parser": "^6.4.0",
-        "eslint": "^8.47.0",
+        "@typescript-eslint/eslint-plugin": "^6.7.2",
+        "@typescript-eslint/parser": "^6.7.2",
+        "eslint": "^8.49.0",
         "eslint-config-prettier": "^9.0.0",
         "eslint-plugin-prettier": "^5.0.0",
-        "prettier": "^3.0.1",
+        "prettier": "^3.0.3",
         "rimraf": "^5.0.1",
-        "typescript": "^5.1.6"
+        "typescript": "^5.2.2"
       }
     },
     "node_modules/@aashutoshrathi/word-wrap": {
@@ -72,18 +72,18 @@
       }
     },
     "node_modules/@eslint/js": {
-      "version": "8.47.0",
-      "resolved": "https://registry.npmjs.org/@eslint/js/-/js-8.47.0.tgz",
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+      "version": "8.49.0",
+      "resolved": "https://registry.npmjs.org/@eslint/js/-/js-8.49.0.tgz",
+      "integrity": "sha512-1S8uAY/MTJqVx0SC4epBq+N2yhuwtNwLbJYNZyhL2pO1ZVKn5HFXav5T41Ryzy9K9V7ZId2JB2oy/W4aCd9/2w==",
       "dev": true,
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-      "resolved": "https://registry.npmjs.org/@humanwhocodes/config-array/-/config-array-0.11.10.tgz",
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+      "version": "0.11.11",
+      "resolved": "https://registry.npmjs.org/@humanwhocodes/config-array/-/config-array-0.11.11.tgz",
+      "integrity": "sha512-N2brEuAadi0CcdeMXUkhbZB84eskAc8MEX1By6qEchoVywSgXPIjou4rYsl0V3Hj0ZnuGycGCjdNgockbzeWNA==",
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@@ -223,28 +223,28 @@
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+      "version": "7.0.13",
+      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.13.tgz",
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-      "resolved": "https://registry.npmjs.org/@types/semver/-/semver-7.5.0.tgz",
-      "integrity": "sha512-G8hZ6XJiHnuhQKR7ZmysCeJWE08o8T0AXtk5darsCaTVsYZhhgUrq53jizaR2FvsoeCwJhlmwTjkXBY5Pn/ZHw==",
+      "version": "7.5.2",
+      "resolved": "https://registry.npmjs.org/@types/semver/-/semver-7.5.2.tgz",
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-      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-6.4.0.tgz",
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+      "version": "6.7.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-6.7.2.tgz",
+      "integrity": "sha512-ooaHxlmSgZTM6CHYAFRlifqh1OAr3PAQEwi7lhYhaegbnXrnh7CDcHmc3+ihhbQC7H0i4JF0psI5ehzkF6Yl6Q==",
       "dev": true,
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-        "@typescript-eslint/scope-manager": "6.4.0",
-        "@typescript-eslint/type-utils": "6.4.0",
-        "@typescript-eslint/utils": "6.4.0",
-        "@typescript-eslint/visitor-keys": "6.4.0",
+        "@typescript-eslint/scope-manager": "6.7.2",
+        "@typescript-eslint/type-utils": "6.7.2",
+        "@typescript-eslint/utils": "6.7.2",
+        "@typescript-eslint/visitor-keys": "6.7.2",
         "debug": "^4.3.4",
         "graphemer": "^1.4.0",
         "ignore": "^5.2.4",
@@ -270,15 +270,15 @@
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-      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-6.4.0.tgz",
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+      "version": "6.7.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-6.7.2.tgz",
+      "integrity": "sha512-KA3E4ox0ws+SPyxQf9iSI25R6b4Ne78ORhNHeVKrPQnoYsb9UhieoiRoJgrzgEeKGOXhcY1i8YtOeCHHTDa6Fw==",
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-        "@typescript-eslint/types": "6.4.0",
-        "@typescript-eslint/typescript-estree": "6.4.0",
-        "@typescript-eslint/visitor-keys": "6.4.0",
+        "@typescript-eslint/scope-manager": "6.7.2",
+        "@typescript-eslint/types": "6.7.2",
+        "@typescript-eslint/typescript-estree": "6.7.2",
+        "@typescript-eslint/visitor-keys": "6.7.2",
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@@ -298,13 +298,13 @@
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+      "version": "6.7.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/scope-manager/-/scope-manager-6.7.2.tgz",
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       "dev": true,
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-        "@typescript-eslint/types": "6.4.0",
-        "@typescript-eslint/visitor-keys": "6.4.0"
+        "@typescript-eslint/types": "6.7.2",
+        "@typescript-eslint/visitor-keys": "6.7.2"
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       "engines": {
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@@ -315,13 +315,13 @@
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-        "@typescript-eslint/utils": "6.4.0",
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@@ -342,9 +342,9 @@
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-        "@typescript-eslint/visitor-keys": "6.4.0",
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+        "@typescript-eslint/visitor-keys": "6.7.2",
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         "globby": "^11.1.0",
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@@ -382,17 +382,17 @@
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-        "@typescript-eslint/types": "6.4.0",
-        "@typescript-eslint/typescript-estree": "6.4.0",
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+        "@typescript-eslint/types": "6.7.2",
+        "@typescript-eslint/typescript-estree": "6.7.2",
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@@ -407,12 +407,12 @@
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@@ -744,16 +744,16 @@
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-        "@eslint/js": "^8.47.0",
-        "@humanwhocodes/config-array": "^0.11.10",
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@@ -2616,28 +2616,28 @@
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+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-6.7.2.tgz",
+      "integrity": "sha512-ooaHxlmSgZTM6CHYAFRlifqh1OAr3PAQEwi7lhYhaegbnXrnh7CDcHmc3+ihhbQC7H0i4JF0psI5ehzkF6Yl6Q==",
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-        "@typescript-eslint/utils": "6.4.0",
-        "@typescript-eslint/visitor-keys": "6.4.0",
+        "@typescript-eslint/scope-manager": "6.7.2",
+        "@typescript-eslint/type-utils": "6.7.2",
+        "@typescript-eslint/utils": "6.7.2",
+        "@typescript-eslint/visitor-keys": "6.7.2",
         "debug": "^4.3.4",
         "graphemer": "^1.4.0",
         "ignore": "^5.2.4",
@@ -2647,54 +2647,54 @@
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+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-6.7.2.tgz",
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-        "@typescript-eslint/typescript-estree": "6.4.0",
-        "@typescript-eslint/visitor-keys": "6.4.0",
+        "@typescript-eslint/scope-manager": "6.7.2",
+        "@typescript-eslint/types": "6.7.2",
+        "@typescript-eslint/typescript-estree": "6.7.2",
+        "@typescript-eslint/visitor-keys": "6.7.2",
         "debug": "^4.3.4"
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-        "@typescript-eslint/utils": "6.4.0",
+        "@typescript-eslint/typescript-estree": "6.7.2",
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         "debug": "^4.3.4",
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+      "version": "6.7.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-6.7.2.tgz",
+      "integrity": "sha512-kiJKVMLkoSciGyFU0TOY0fRxnp9qq1AzVOHNeN1+B9erKFCJ4Z8WdjAkKQPP+b1pWStGFqezMLltxO+308dJTQ==",
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-        "@typescript-eslint/types": "6.4.0",
-        "@typescript-eslint/visitor-keys": "6.4.0",
+        "@typescript-eslint/types": "6.7.2",
+        "@typescript-eslint/visitor-keys": "6.7.2",
         "debug": "^4.3.4",
         "globby": "^11.1.0",
         "is-glob": "^4.0.3",
@@ -2703,27 +2703,27 @@
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+      "version": "6.7.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-6.7.2.tgz",
+      "integrity": "sha512-ZCcBJug/TS6fXRTsoTkgnsvyWSiXwMNiPzBUani7hDidBdj1779qwM1FIAmpH4lvlOZNF3EScsxxuGifjpLSWQ==",
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         "@eslint-community/eslint-utils": "^4.4.0",
         "@types/json-schema": "^7.0.12",
         "@types/semver": "^7.5.0",
-        "@typescript-eslint/scope-manager": "6.4.0",
-        "@typescript-eslint/types": "6.4.0",
-        "@typescript-eslint/typescript-estree": "6.4.0",
+        "@typescript-eslint/scope-manager": "6.7.2",
+        "@typescript-eslint/types": "6.7.2",
+        "@typescript-eslint/typescript-estree": "6.7.2",
         "semver": "^7.5.4"
       }
     },
     "@typescript-eslint/visitor-keys": {
-      "version": "6.4.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-6.4.0.tgz",
-      "integrity": "sha512-yJSfyT+uJm+JRDWYRYdCm2i+pmvXJSMtPR9Cq5/XQs4QIgNoLcoRtDdzsLbLsFM/c6um6ohQkg/MLxWvoIndJA==",
+      "version": "6.7.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-6.7.2.tgz",
+      "integrity": "sha512-uVw9VIMFBUTz8rIeaUT3fFe8xIUx8r4ywAdlQv1ifH+6acn/XF8Y6rwJ7XNmkNMDrTW+7+vxFFPIF40nJCVsMQ==",
       "dev": true,
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-        "@typescript-eslint/types": "6.4.0",
+        "@typescript-eslint/types": "6.7.2",
         "eslint-visitor-keys": "^3.4.1"
       }
     },
@@ -2956,16 +2956,16 @@
       "dev": true
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     "eslint": {
-      "version": "8.47.0",
-      "resolved": "https://registry.npmjs.org/eslint/-/eslint-8.47.0.tgz",
-      "integrity": "sha512-spUQWrdPt+pRVP1TTJLmfRNJJHHZryFmptzcafwSvHsceV81djHOdnEeDmkdotZyLNjDhrOasNK8nikkoG1O8Q==",
+      "version": "8.49.0",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-8.49.0.tgz",
+      "integrity": "sha512-jw03ENfm6VJI0jA9U+8H5zfl5b+FvuU3YYvZRdZHOlU2ggJkxrlkJH4HcDrZpj6YwD8kuYqvQM8LyesoazrSOQ==",
       "dev": true,
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         "@eslint-community/eslint-utils": "^4.2.0",
         "@eslint-community/regexpp": "^4.6.1",
         "@eslint/eslintrc": "^2.1.2",
-        "@eslint/js": "^8.47.0",
-        "@humanwhocodes/config-array": "^0.11.10",
+        "@eslint/js": "8.49.0",
+        "@humanwhocodes/config-array": "^0.11.11",
         "@humanwhocodes/module-importer": "^1.0.1",
         "@nodelib/fs.walk": "^1.2.8",
         "ajv": "^6.12.4",
@@ -3681,9 +3681,9 @@
       "dev": true
     },
     "prettier": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.0.1.tgz",
-      "integrity": "sha512-fcOWSnnpCrovBsmFZIGIy9UqK2FaI7Hqax+DIO0A9UxeVoY4iweyaFjS5TavZN97Hfehph0nhsZnjlVKzEQSrQ==",
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.0.3.tgz",
+      "integrity": "sha512-L/4pUDMxcNa8R/EthV08Zt42WBO4h1rarVtK0K+QJG0X187OLo7l699jWw0GKuwzkPQ//jMFA/8Xm6Fh3J/DAg==",
       "dev": true
     },
     "prettier-linter-helpers": {
@@ -4022,9 +4022,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "5.1.6",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.1.6.tgz",
-      "integrity": "sha512-zaWCozRZ6DLEWAWFrVDz1H6FVXzUSfTy5FUMWsQlU8Ym5JP9eO4xkTIROFCQvhQf61z6O/G6ugw3SgAnvvm+HA==",
+      "version": "5.2.2",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.2.2.tgz",
+      "integrity": "sha512-mI4WrpHsbCIcwT9cF4FZvr80QUeKvsUsUvKDoR+X/7XHQH98xYD8YHZg7ANtz2GtZt/CBq2QJ0thkGJMHfqc1w==",
       "dev": true
     },
     "untildify": {
diff --git a/package.json b/package.json
index e178451..e0db898 100644
--- a/package.json
+++ b/package.json
@@ -8,13 +8,13 @@
     "clean": "rimraf dist"
   },
   "devDependencies": {
-    "@typescript-eslint/eslint-plugin": "^6.4.0",
-    "@typescript-eslint/parser": "^6.4.0",
-    "eslint": "^8.47.0",
+    "@typescript-eslint/eslint-plugin": "^6.7.2",
+    "@typescript-eslint/parser": "^6.7.2",
+    "eslint": "^8.49.0",
     "eslint-config-prettier": "^9.0.0",
     "eslint-plugin-prettier": "^5.0.0",
-    "prettier": "^3.0.1",
+    "prettier": "^3.0.3",
     "rimraf": "^5.0.1",
-    "typescript": "^5.1.6"
+    "typescript": "^5.2.2"
   }
 }
diff --git a/src/math/cubismmatrix44.ts b/src/math/cubismmatrix44.ts
index 6af5335..19605ab 100644
--- a/src/math/cubismmatrix44.ts
+++ b/src/math/cubismmatrix44.ts
@@ -253,8 +253,10 @@ export class CubismMatrix44 {
   }
 
   /**
-   * 現在の行列に行列を乗算
+   * 引数で与えられた行列にこの行列を乗算する。
+   * (引数で与えられた行列) * (この行列)
    *
+   * @note 関数名と実際の計算内容に乖離があるため、今後計算順が修正される可能性があります。
    * @param m 行列
    */
   public multiplyByMatrix(m: CubismMatrix44): void {