diff --git a/app/game-engine/src/turn/monthlyCreateAdminNpcAction.ts b/app/game-engine/src/turn/monthlyCreateAdminNpcAction.ts
new file mode 100644
index 0000000..a781b42
--- /dev/null
+++ b/app/game-engine/src/turn/monthlyCreateAdminNpcAction.ts
@@ -0,0 +1,5 @@
+import type { MonthlyEventActionHandler } from './monthlyEventHandler.js';
+
+// 레거시 CreateAdminNPC::run()은 [class, "NYI"]만 반환하고 어떤 상태도
+// 변경하지 않는다. 새 관리자 NPC를 임의로 만들지 않고 no-op 계약을 보존한다.
+export const createCreateAdminNpcHandler = (): MonthlyEventActionHandler => () => undefined;
diff --git a/app/game-engine/src/turn/turnDaemon.ts b/app/game-engine/src/turn/turnDaemon.ts
index ae19cf7..660cc88 100644
--- a/app/game-engine/src/turn/turnDaemon.ts
+++ b/app/game-engine/src/turn/turnDaemon.ts
@@ -50,6 +50,7 @@ import { createUpdateCitySupplyHandler } from './monthlyCitySupplyAction.js';
 import { createUpdateNationLevelHandler } from './monthlyNationLevelAction.js';
 import { createProcessSemiAnnualHandler } from './monthlySemiAnnualAction.js';
 import { createProcessWarIncomeHandler } from './monthlyWarIncomeAction.js';
+import { createCreateAdminNpcHandler } from './monthlyCreateAdminNpcAction.js';
 import { DatabaseTurnDaemonLease, TurnDaemonLeaseUnavailableError } from '../lifecycle/databaseTurnDaemonLease.js';
 
 export interface TurnDaemonRuntimeOptions {
@@ -217,6 +218,7 @@ const createTurnDaemonRuntimeWithLease = async (
             nationTraits: nationTraitMap,
         })
     );
+    eventActions.set('CreateAdminNPC', createCreateAdminNpcHandler());
     if (reservedTurnStoreHandle) {
         eventActions.set(
             'UpdateNationLevel',
diff --git a/app/game-engine/test/monthlyCreateAdminNpcAction.test.ts b/app/game-engine/test/monthlyCreateAdminNpcAction.test.ts
new file mode 100644
index 0000000..5e7071c
--- /dev/null
+++ b/app/game-engine/test/monthlyCreateAdminNpcAction.test.ts
@@ -0,0 +1,71 @@
+import { describe, expect, it } from 'vitest';
+
+import { InMemoryTurnWorld } from '../src/turn/inMemoryWorld.js';
+import { createCreateAdminNpcHandler } from '../src/turn/monthlyCreateAdminNpcAction.js';
+import { createMonthlyEventHandler } from '../src/turn/monthlyEventHandler.js';
+import type { TurnWorldSnapshot, TurnWorldState } from '../src/turn/types.js';
+
+describe('CreateAdminNPC monthly action', () => {
+    it('preserves the legacy NYI no-op while allowing the event to continue', async () => {
+        const state: TurnWorldState = {
+            id: 1,
+            currentYear: 193,
+            currentMonth: 11,
+            tickSeconds: 600,
+            lastTurnTime: new Date('0193-11-01T00:00:00.000Z'),
+            meta: {},
+        };
+        const snapshot: TurnWorldSnapshot = {
+            scenarioConfig: {
+                stat: { total: 300, min: 10, max: 100, npcTotal: 150, npcMax: 50, npcMin: 10, chiefMin: 70 },
+                iconPath: '',
+                map: {},
+                const: {},
+                environment: { mapName: 'test', unitSet: 'default' },
+            },
+            map: {
+                id: 'test',
+                name: 'test',
+                cities: [],
+                defaults: { trust: 50, trade: 100, supplyState: 1, frontState: 0 },
+            },
+            generals: [],
+            cities: [],
+            nations: [],
+            troops: [],
+            diplomacy: [],
+            events: [
+                {
+                    id: 77,
+                    targetCode: 'month',
+                    priority: 1_000,
+                    condition: true,
+                    action: [['CreateAdminNPC'], ['DeleteEvent']],
+                    meta: { marker: true },
+                },
+            ],
+            initialEvents: [],
+        };
+        let world: InMemoryTurnWorld | null = null;
+        const calendarHandler = createMonthlyEventHandler({
+            getWorld: () => world,
+            startYear: 190,
+            actions: new Map([['CreateAdminNPC', createCreateAdminNpcHandler()]]),
+        });
+        world = new InMemoryTurnWorld(state, snapshot, {
+            schedule: { entries: [{ startMinute: 0, tickMinutes: 10 }] },
+            calendarHandler,
+        });
+
+        await world.advanceMonth(new Date('0193-12-01T00:00:00.000Z'));
+
+        expect(world.listGenerals()).toEqual([]);
+        expect(world.peekDirtyState()).toMatchObject({
+            generals: [],
+            cities: [],
+            nations: [],
+            logs: [],
+            deletedEvents: [77],
+        });
+    });
+});