diff --git a/src/codes/EquipDetail/config/config.ts b/src/codes/EquipDetail/config/config.ts
new file mode 100644
index 00000000..d3222c84
--- /dev/null
+++ b/src/codes/EquipDetail/config/config.ts
@@ -0,0 +1,60 @@
+import { ConfigDefinitionBuilder } from '../../../../modules/config/configDefinitionBuilder.js';
+import { PluginHistorySchema } from '../../../../modules/config/configSchema.js';
+import { createSelectParam } from '../../../../modules/config/createParameter.js';
+import { dedent } from '@qnighy/dedent';
+
+const histories: PluginHistorySchema[] = [
+  {
+    date: "2024/04/17",
+    version: "1.0.0",
+    description: "公開",
+  }
+];
+
+const parameters = [
+  createSelectParam('openDetailKey', {
+    text: '詳細説明ボタン',
+    description: '詳細説明を開くためのボタンを設定します。',
+    options: [
+      {
+        name: 'pageup',
+      },
+      {
+        name: 'pagedown',
+      },
+      {
+        name: 'shift',
+      },
+      {
+        name: 'control',
+      },
+      {
+        name: 'tab',
+      },
+    ],
+    default: 'shift',
+  }),
+];
+
+export const config = new ConfigDefinitionBuilder(
+  "EquipDetail",
+  2024,
+  "装備シーンで装備品の詳細説明を表示する"
+)
+  .withHistories(histories)
+  .withLicense("MIT")
+  .withParameters(parameters)
+  .withBaseDependency({
+    name: 'DarkPlasma_CustomKeyHandler',
+    version: '1.3.0',
+  })
+  .withOrderAfterDependency({
+    name: 'DarkPlasma_CustomKeyHandler',
+  })
+  .withHelp(dedent`装備シーンの装備にカーソルを合わせて特定のボタンを押すと
+  装備詳細説明ウィンドウを開きます。
+  
+  装備のメモ欄に下記のような記述で詳細説明を記述できます。
+  <detail:詳細説明文。
+  ～～～～。>`)
+  .build();
diff --git a/src/codes/EquipDetail/plugin/DarkPlasma_EquipDetail.ts b/src/codes/EquipDetail/plugin/DarkPlasma_EquipDetail.ts
new file mode 100644
index 00000000..3f0a0286
--- /dev/null
+++ b/src/codes/EquipDetail/plugin/DarkPlasma_EquipDetail.ts
@@ -0,0 +1,85 @@
+/// <reference path="./EquipDetail.d.ts" />
+
+import { settings } from '../config/_build/DarkPlasma_EquipDetail_parameters';
+import { Window_DetailText } from '../../../common/window/detailWindow';
+
+function Scene_Equip_DetailMixIn(sceneEquip: Scene_Equip) {
+  const _create = sceneEquip.create;
+  sceneEquip.create = function () {
+    _create.call(this);
+    this.createDetailWindow();
+  };
+
+  const _createSlotWindow = sceneEquip.createSlotWindow;
+  sceneEquip.createSlotWindow = function () {
+    _createSlotWindow.call(this);
+    this._slotWindow.setHandler('detail', () => this.toggleDetailWindow(this._slotWindow));
+  };
+
+  const _createItemWindow = sceneEquip.createItemWindow;
+  sceneEquip.createItemWindow = function () {
+    _createItemWindow.call(this);
+    this._itemWindow.setHandler('detail', () => this.toggleDetailWindow(this._itemWindow));
+  };
+
+  sceneEquip.createDetailWindow = function () {
+    this._detailWindowLayer = new WindowLayer();
+    this._detailWindowLayer.x = (Graphics.width - Graphics.boxWidth) / 2;
+    this._detailWindowLayer.y = (Graphics.height - Graphics.boxHeight) / 2;
+    this.addChild(this._detailWindowLayer);
+    this._detailWindow = new Window_DetailText(this.detailWindowRect());
+    this._detailWindowLayer.addChild(this._detailWindow);
+    this._itemWindow.setDetailWindow(this._detailWindow);
+    this._slotWindow.setDetailWindow(this._detailWindow);
+  };
+
+  sceneEquip.detailWindowRect = function () {
+    return this.slotWindowRect();
+  };
+
+  sceneEquip.toggleDetailWindow = function (activeWindow) {
+    activeWindow.activate();
+    this._detailWindow.scrollTo(0, 0);
+    if (!this._detailWindow.visible) {
+      this._detailWindow.show();
+    } else {
+      this._detailWindow.hide();
+    }
+  };
+}
+
+Scene_Equip_DetailMixIn(Scene_Equip.prototype);
+
+Window_CustomKeyHandlerMixIn(settings.openDetailKey, Window_EquipSlot.prototype, 'detail');
+Window_CustomKeyHandlerMixIn(settings.openDetailKey, Window_EquipItem.prototype, 'detail');
+
+function Window_Equip_DetailMixIn(windowClass: Window_EquipSlot|Window_EquipItem) {
+  windowClass.setDetailWindow = function (detailWindow) {
+    this._detailWindow = detailWindow;
+  };
+
+  const _setHelpWindowItem = windowClass.setHelpWindowItem;
+  windowClass.setHelpWindowItem = function (item) {
+    _setHelpWindowItem.call(this, item);
+    this._detailWindow?.setItem(item as DataManager.NoteHolder);
+  };
+
+  const _isCursorMovable = windowClass.isCursorMovable;
+  windowClass.isCursorMovable = function () {
+    return _isCursorMovable.call(this) && (!this._detailWindow || !this._detailWindow.visible);
+  };
+
+  const _isOkEnabled = windowClass.isOkEnabled;
+  windowClass.isOkEnabled = function () {
+    return _isOkEnabled.call(this) && (!this._detailWindow || !this._detailWindow.visible);
+  };
+
+  const _processCancel = windowClass.processCancel;
+  windowClass.processCancel = function () {
+    this._detailWindow?.hide();
+    _processCancel.call(this);
+  };
+}
+
+Window_Equip_DetailMixIn(Window_EquipSlot.prototype);
+Window_Equip_DetailMixIn(Window_EquipItem.prototype);
diff --git a/src/codes/EquipDetail/plugin/EquipDetail.d.ts b/src/codes/EquipDetail/plugin/EquipDetail.d.ts
new file mode 100644
index 00000000..c584c13a
--- /dev/null
+++ b/src/codes/EquipDetail/plugin/EquipDetail.d.ts
@@ -0,0 +1,25 @@
+/// <reference path="../../../typings/rmmz.d.ts" />
+/// <reference path="../../CustomKeyHandler/CustomKeyHandler.d.ts" />
+/// <reference path="../../CustomKeyHandler/CustomKeyHandlerExport.d.ts" />
+/// <reference path="../../../common/window/detailWindow.d.ts" />
+
+declare interface Scene_Equip {
+  _detailWindowLayer: WindowLayer;
+  _detailWindow: Window_DetailText;
+
+  createDetailWindow(): void;
+  detailWindowRect(): Rectangle;
+  toggleDetailWindow(activeWindow: Window_EquipSlot|Window_EquipItem): void;
+}
+
+declare interface Window_EquipSlot {
+  _detailWindow?: Window_DetailText;
+
+  setDetailWindow(detailWindow: Window_DetailText): void;
+}
+
+declare interface Window_EquipItem {
+  _detailWindow?: Window_DetailText;
+
+  setDetailWindow(detailWindow: Window_DetailText): void;
+}
diff --git a/src/common/window/detailWindow.d.ts b/src/common/window/detailWindow.d.ts
new file mode 100644
index 00000000..f927d8c5
--- /dev/null
+++ b/src/common/window/detailWindow.d.ts
@@ -0,0 +1,17 @@
+/// <reference path="../../typings/rmmz.d.ts" />
+
+declare class Window_DetailText extends Window_Scrollable {
+  _text: string;
+
+  initialize(rect: Rectangle): void;
+  setItem(item: DataManager.NoteHolder|null): void;
+  setText(text: string): void;
+  drawDetail(detail: string): void;
+  baseLineY(): number;
+  heightAdjustment(): number;
+  refresh(): void;
+  processCursorMove(): void;
+  isCursorMovable(): boolean;
+  cursorDown(): void;
+  cursorUp(): void;
+}