diff --git a/app/game-engine/src/turn/monthlyUniqueInheritAction.ts b/app/game-engine/src/turn/monthlyUniqueInheritAction.ts
new file mode 100644
index 0000000..b22292b
--- /dev/null
+++ b/app/game-engine/src/turn/monthlyUniqueInheritAction.ts
@@ -0,0 +1,254 @@
+import { JosaUtil, LiteHashDRBG, RandUtil } from '@sammo-ts/common';
+import {
+    LogCategory,
+    LogFormat,
+    LogScope,
+    cloneItemInventory,
+    createItemModuleRegistry,
+    ensureItemInventory,
+    removeEquippedItem,
+    type ItemModule,
+    type ItemSlot,
+} from '@sammo-ts/logic';
+import { simpleSerialize } from '@sammo-ts/logic/war/utils.js';
+
+import type { InMemoryTurnWorld } from './inMemoryWorld.js';
+import type { MonthlyEventActionHandler } from './monthlyEventHandler.js';
+import type { TurnGeneral } from './types.js';
+
+const LEGACY_ITEM_SLOTS: readonly ItemSlot[] = ['horse', 'weapon', 'book', 'item'];
+const DEX_LIMIT = 1_275_975;
+const STORED_INHERITANCE_KEYS = [
+    'lived_month',
+    'max_domestic_critical',
+    'active_action',
+    'unifier',
+    'tournament',
+] as const;
+const ALL_MERGED_INHERITANCE_KEYS = [
+    ...STORED_INHERITANCE_KEYS,
+    'max_belong',
+    'combat',
+    'sabotage',
+    'dex',
+    'betting',
+] as const;
+
+const readNumber = (source: Record<string, unknown>, key: string): number => {
+    const value = source[key];
+    if (typeof value === 'number' && Number.isFinite(value)) {
+        return value;
+    }
+    if (typeof value === 'string') {
+        const parsed = Number(value);
+        if (Number.isFinite(parsed)) {
+            return parsed;
+        }
+    }
+    return 0;
+};
+
+const resolveHiddenSeed = (world: InMemoryTurnWorld): string | number => {
+    const state = world.getState();
+    const value = state.meta.hiddenSeed ?? state.meta.seed ?? state.id;
+    return typeof value === 'string' || typeof value === 'number' ? value : String(value);
+};
+
+const readLostProbability = (value: unknown): number => {
+    if (value === undefined) {
+        return 0.1;
+    }
+    if (typeof value !== 'number' || !Number.isFinite(value)) {
+        throw new Error('LostUniqueItem probability must be a finite number.');
+    }
+    return value;
+};
+
+export const createLostUniqueItemHandler = (options: {
+    getWorld: () => InMemoryTurnWorld | null;
+    itemModules: ItemModule[];
+}): MonthlyEventActionHandler => {
+    const itemRegistry = createItemModuleRegistry(options.itemModules);
+    return (args, environment) => {
+        const world = options.getWorld();
+        if (!world) {
+            return;
+        }
+        const probability = readLostProbability(args[0]);
+        const rng = new RandUtil(
+            new LiteHashDRBG(
+                simpleSerialize(resolveHiddenSeed(world), 'LostUniqueItem', environment.year, environment.month)
+            )
+        );
+        let totalLostCount = 0;
+        let maximumLostCount = 0;
+        let maximumLostGeneralNames: string[] = [];
+
+        // ref SELECT와 createObjListFromDB 모두 ORDER BY가 없으므로 loader 순서를
+        // 유지한다. 아이템 객체 생성 순서는 horse, weapon, book, item이다.
+        for (const general of world.listGenerals().filter((entry) => entry.npcState <= 1)) {
+            const nextGeneral: TurnGeneral = {
+                ...general,
+                role: { ...general.role, items: { ...general.role.items } },
+                itemInventory: cloneItemInventory(ensureItemInventory(general)),
+            };
+            let lostCount = 0;
+            for (const slot of LEGACY_ITEM_SLOTS) {
+                const itemKey = nextGeneral.role.items[slot];
+                if (!itemKey) {
+                    continue;
+                }
+                const item = itemRegistry.get(itemKey);
+                if (!item) {
+                    throw new Error(`Unknown equipped item: ${itemKey} (generalId=${general.id}).`);
+                }
+                if (item.buyable || !rng.nextBool(probability)) {
+                    continue;
+                }
+                removeEquippedItem(nextGeneral, slot);
+                lostCount += 1;
+                totalLostCount += 1;
+                const josaUl = JosaUtil.pick(item.rawName, '을');
+                world.pushLog({
+                    scope: LogScope.GENERAL,
+                    category: LogCategory.ACTION,
+                    generalId: general.id,
+                    text: `<C>${item.name}</>${josaUl} 잃었습니다.`,
+                    format: LogFormat.PLAIN,
+                    year: environment.year,
+                    month: environment.month,
+                });
+            }
+            if (lostCount === 0) {
+                continue;
+            }
+            world.updateGeneral(general.id, {
+                role: nextGeneral.role,
+                itemInventory: nextGeneral.itemInventory,
+            });
+            if (lostCount > maximumLostCount) {
+                maximumLostCount = lostCount;
+                maximumLostGeneralNames = [general.name];
+            } else if (lostCount === maximumLostCount) {
+                maximumLostGeneralNames.push(general.name);
+            }
+        }
+
+        if (totalLostCount === 0) {
+            world.pushLog({
+                scope: LogScope.SYSTEM,
+                category: LogCategory.HISTORY,
+                text: '<R><b>【망실】</b></>어떤 아이템도 잃지 않았습니다!',
+                format: LogFormat.YEAR_MONTH,
+                year: environment.year,
+                month: environment.month,
+            });
+            return;
+        }
+        const totalMaximumGenerals = maximumLostGeneralNames.length;
+        const displayedNames = maximumLostGeneralNames.slice(0, 4);
+        let nameList = displayedNames.join(', ');
+        if (totalMaximumGenerals > 4) {
+            nameList += ` 외 ${totalMaximumGenerals - 4}명`;
+        }
+        const josaYi = JosaUtil.pick(nameList, '이');
+        world.pushLog({
+            scope: LogScope.SYSTEM,
+            category: LogCategory.HISTORY,
+            text: `<R><b>【망실】</b></>불운하게도 <Y>${nameList}</>${josaYi} 한 번에 유니크 <C>${maximumLostCount}</>종을 잃었습니다! (총 <C>${totalLostCount}</>개)`,
+            format: LogFormat.YEAR_MONTH,
+            year: environment.year,
+            month: environment.month,
+        });
+    };
+};
+
+const computeDexPoint = (general: TurnGeneral): number => {
+    let totalDexterity = 0;
+    for (let index = 1; index <= 5; index += 1) {
+        let dexterity = readNumber(general.meta, `dex${index}`);
+        if (dexterity > DEX_LIMIT) {
+            totalDexterity += (dexterity - DEX_LIMIT) / 3;
+            dexterity = DEX_LIMIT;
+        }
+        totalDexterity += dexterity;
+    }
+    return totalDexterity * 0.001;
+};
+
+const computeBettingPoint = (general: TurnGeneral): number => {
+    const wins = readNumber(general.meta, 'betwin');
+    const gold = readNumber(general.meta, 'betgold');
+    const wonGold = readNumber(general.meta, 'betwingold');
+    const winRate = wonGold / Math.max(1000, gold);
+    return wins * 10 * winRate ** 2;
+};
+
+const computeActiveInheritancePoint = (general: TurnGeneral, key: string): number => {
+    const stored = general.inheritancePoints?.[key] ?? 0;
+    switch (key) {
+        case 'lived_month': {
+            const value = readNumber(general.meta, 'inherit_lived_month');
+            return value !== 0 ? value : stored;
+        }
+        case 'max_domestic_critical': {
+            const value = readNumber(general.meta, 'max_domestic_critical');
+            return value !== 0 ? value : stored;
+        }
+        case 'active_action': {
+            const value = readNumber(general.meta, 'inherit_active_action');
+            return value !== 0 ? value * 3 : stored;
+        }
+        case 'unifier':
+        case 'tournament':
+            return stored;
+        case 'max_belong':
+            return Math.max(readNumber(general.meta, 'belong'), readNumber(general.meta, 'inherit_max_belong')) * 10;
+        case 'combat':
+            return readNumber(general.meta, 'rank_warnum') * 5;
+        case 'sabotage':
+            return readNumber(general.meta, 'firenum') * 20;
+        case 'dex':
+            return computeDexPoint(general);
+        case 'betting':
+            return computeBettingPoint(general);
+        default:
+            return stored;
+    }
+};
+
+export const createMergeInheritPointRankHandler = (options: {
+    getWorld: () => InMemoryTurnWorld | null;
+}): MonthlyEventActionHandler => {
+    return () => {
+        const world = options.getWorld();
+        if (!world) {
+            return;
+        }
+        const state = world.getState();
+        const isUnited = readNumber(state.meta, 'isunited') !== 0 || readNumber(state.meta, 'isUnited') !== 0;
+        for (const general of world.listGenerals()) {
+            let merged = 0;
+            for (const key of ALL_MERGED_INHERITANCE_KEYS) {
+                if (isUnited) {
+                    merged += general.inheritancePoints?.[key] ?? 0;
+                    continue;
+                }
+                if (!general.userId || general.npcState >= 2) {
+                    continue;
+                }
+                merged += computeActiveInheritancePoint(general, key);
+            }
+            const actionPoint = readNumber(general.meta, 'inherit_earned_act');
+            const spentDynamic = readNumber(general.meta, 'inherit_spent_dyn');
+            world.updateGeneral(general.id, {
+                meta: {
+                    ...general.meta,
+                    inherit_earned_dyn: merged,
+                    inherit_earned: actionPoint + merged,
+                    inherit_spent: spentDynamic,
+                },
+            });
+        }
+    };
+};
diff --git a/app/game-engine/src/turn/turnDaemon.ts b/app/game-engine/src/turn/turnDaemon.ts
index 0ff3cd6..2d5a598 100644
--- a/app/game-engine/src/turn/turnDaemon.ts
+++ b/app/game-engine/src/turn/turnDaemon.ts
@@ -61,15 +61,10 @@ import {
 } from './monthlyInvaderAction.js';
 import { createChangeCityHandler } from './monthlyChangeCityAction.js';
 import { createProvideNpcTroopLeaderHandler } from './monthlyProvideNpcTroopLeaderAction.js';
-import {
-    createFinishNationBettingHandler,
-    createOpenNationBettingHandler,
-} from './monthlyNationBettingAction.js';
+import { createFinishNationBettingHandler, createOpenNationBettingHandler } from './monthlyNationBettingAction.js';
 import { createScoutBlockHandler } from './monthlyScoutBlockAction.js';
-import {
-    createAddGlobalBetrayHandler,
-    createAssignGeneralSpecialityHandler,
-} from './monthlySpecialityBetrayAction.js';
+import { createAddGlobalBetrayHandler, createAssignGeneralSpecialityHandler } from './monthlySpecialityBetrayAction.js';
+import { createLostUniqueItemHandler, createMergeInheritPointRankHandler } from './monthlyUniqueInheritAction.js';
 import { buildCommandEnv } from './reservedTurnCommands.js';
 import { DatabaseTurnDaemonLease, TurnDaemonLeaseUnavailableError } from '../lifecycle/databaseTurnDaemonLease.js';
 
@@ -374,6 +369,19 @@ const createTurnDaemonRuntimeWithLease = async (
             getWorld: () => worldRef,
         })
     );
+    eventActions.set(
+        'LostUniqueItem',
+        createLostUniqueItemHandler({
+            getWorld: () => worldRef,
+            itemModules: monthlyActionModules.itemModules,
+        })
+    );
+    eventActions.set(
+        'MergeInheritPointRank',
+        createMergeInheritPointRankHandler({
+            getWorld: () => worldRef,
+        })
+    );
     eventActions.set('ProcessIncome', async (_args, environment) => {
         await incomeHandler.onMonthChanged?.({
             previousYear: environment.month === 1 ? environment.year - 1 : environment.year,
diff --git a/app/game-engine/test/monthlyUniqueInheritAction.test.ts b/app/game-engine/test/monthlyUniqueInheritAction.test.ts
new file mode 100644
index 0000000..715cb83
--- /dev/null
+++ b/app/game-engine/test/monthlyUniqueInheritAction.test.ts
@@ -0,0 +1,321 @@
+import { describe, expect, it } from 'vitest';
+import { LogCategory, LogFormat, loadActionModuleBundle, type GeneralItemSlots } from '@sammo-ts/logic';
+
+import { InMemoryTurnWorld } from '../src/turn/inMemoryWorld.js';
+import {
+    createLostUniqueItemHandler,
+    createMergeInheritPointRankHandler,
+} from '../src/turn/monthlyUniqueInheritAction.js';
+import type { TurnEvent, TurnGeneral, TurnWorldSnapshot, TurnWorldState } from '../src/turn/types.js';
+
+const event: TurnEvent = {
+    id: 1,
+    targetCode: 'month',
+    priority: 9_000,
+    condition: true,
+    action: [],
+    meta: {},
+};
+
+const environment = {
+    year: 210,
+    month: 1,
+    startyear: 180,
+    currentEventID: 1,
+    turnTime: new Date('0210-01-01T00:00:00.000Z'),
+};
+
+const buildGeneral = (options: {
+    id: number;
+    name: string;
+    npcState: number;
+    items?: Partial<GeneralItemSlots>;
+    meta?: Record<string, unknown>;
+    inheritancePoints?: Record<string, number>;
+}): TurnGeneral => ({
+    id: options.id,
+    userId: `user-${options.id}`,
+    name: options.name,
+    nationId: 1,
+    cityId: 1,
+    troopId: 0,
+    stats: { leadership: 50, strength: 50, intelligence: 50 },
+    experience: 0,
+    dedication: 0,
+    officerLevel: 1,
+    role: {
+        personality: null,
+        specialDomestic: null,
+        specialWar: null,
+        items: {
+            horse: options.items?.horse ?? null,
+            weapon: options.items?.weapon ?? null,
+            book: options.items?.book ?? null,
+            item: options.items?.item ?? null,
+        },
+    },
+    injury: 0,
+    gold: 0,
+    rice: 0,
+    crew: 0,
+    crewTypeId: 0,
+    train: 0,
+    atmos: 0,
+    age: 30,
+    startAge: 20,
+    npcState: options.npcState,
+    triggerState: { flags: {}, counters: {}, modifiers: {}, meta: {} },
+    meta: { killturn: 1, ...(options.meta ?? {}) },
+    inheritancePoints: options.inheritancePoints,
+    lastTurn: { command: '휴식' },
+    turnTime: new Date('0210-01-01T00:00:00.000Z'),
+});
+
+const buildWorld = (generals: TurnGeneral[], worldMeta: Record<string, unknown> = {}) => {
+    const state: TurnWorldState = {
+        id: 1,
+        currentYear: 210,
+        currentMonth: 1,
+        tickSeconds: 600,
+        lastTurnTime: environment.turnTime,
+        meta: { hiddenSeed: 'monthly-unique-fixture', ...worldMeta },
+    };
+    const scenarioConfig: TurnWorldSnapshot['scenarioConfig'] = {
+        stat: { total: 300, min: 10, max: 100, npcTotal: 150, npcMax: 75, npcMin: 10, chiefMin: 70 },
+        iconPath: '.',
+        map: {},
+        const: {},
+        environment: { mapName: 'test', unitSet: 'default' },
+    };
+    return new InMemoryTurnWorld(
+        state,
+        {
+            scenarioConfig,
+            map: { id: 'test', name: 'test', cities: [] },
+            generals,
+            cities: [],
+            nations: [],
+            troops: [],
+            diplomacy: [],
+            events: [event],
+            initialEvents: [],
+        },
+        { schedule: { entries: [{ startMinute: 0, tickMinutes: 10 }] } }
+    );
+};
+
+describe('monthly unique-item loss and inheritance rank merge', () => {
+    it('drops only non-buyable items in legacy slot and general order and writes the summary', async () => {
+        const modules = (await loadActionModuleBundle()).itemModules;
+        const world = buildWorld([
+            buildGeneral({
+                id: 1,
+                name: '갑',
+                npcState: 0,
+                items: {
+                    horse: 'che_명마_12_옥란백용구',
+                    weapon: 'che_무기_15_의천검',
+                    book: 'che_서적_01_효경전',
+                    item: 'che_저지_삼황내문',
+                },
+            }),
+            buildGeneral({
+                id: 2,
+                name: '을',
+                npcState: 1,
+                items: {
+                    horse: 'che_명마_12_사륜거',
+                    weapon: 'che_무기_01_단도',
+                    item: 'che_부적_태현청생부',
+                },
+            }),
+            buildGeneral({
+                id: 3,
+                name: '제외',
+                npcState: 2,
+                items: { item: 'che_저지_삼황내문' },
+            }),
+        ]);
+
+        await createLostUniqueItemHandler({ getWorld: () => world, itemModules: modules })([1], environment, event);
+
+        expect(world.getGeneralById(1)?.role.items).toEqual({
+            horse: null,
+            weapon: null,
+            book: 'che_서적_01_효경전',
+            item: null,
+        });
+        expect(world.getGeneralById(2)?.role.items).toEqual({
+            horse: null,
+            weapon: 'che_무기_01_단도',
+            book: null,
+            item: null,
+        });
+        expect(world.getGeneralById(3)?.role.items.item).toBe('che_저지_삼황내문');
+        expect(world.peekDirtyState().logs.map((log) => log.text)).toEqual([
+            '<C>옥란백용구(+12)</>를 잃었습니다.',
+            '<C>의천검(+15)</>을 잃었습니다.',
+            '<C>삼황내문(저지)</>을 잃었습니다.',
+            '<C>사륜거(+12)</>를 잃었습니다.',
+            '<C>태현청생부(부적)</>를 잃었습니다.',
+            '<R><b>【망실】</b></>불운하게도 <Y>갑</>이 한 번에 유니크 <C>3</>종을 잃었습니다! (총 <C>5</>개)',
+        ]);
+        expect(world.peekDirtyState().logs.at(-1)).toEqual(
+            expect.objectContaining({ category: LogCategory.HISTORY, format: LogFormat.YEAR_MONTH })
+        );
+    });
+
+    it('writes the no-loss history without consuming RNG for buyable items', async () => {
+        const modules = (await loadActionModuleBundle()).itemModules;
+        const world = buildWorld([
+            buildGeneral({
+                id: 1,
+                name: '갑',
+                npcState: 0,
+                items: { horse: 'che_명마_05_갈색마', weapon: 'che_무기_01_단도' },
+            }),
+        ]);
+
+        await createLostUniqueItemHandler({ getWorld: () => world, itemModules: modules })([1], environment, event);
+
+        expect(world.peekDirtyState().generals).toEqual([]);
+        expect(world.peekDirtyState().logs).toEqual([
+            expect.objectContaining({
+                text: '<R><b>【망실】</b></>어떤 아이템도 잃지 않았습니다!',
+                category: LogCategory.HISTORY,
+                format: LogFormat.YEAR_MONTH,
+            }),
+        ]);
+    });
+
+    it.skipIf(!process.env.REF_HIDDEN_SEED)('matches the isolated legacy 20% loss choices', async () => {
+        const modules = (await loadActionModuleBundle()).itemModules;
+        const world = buildWorld(
+            [
+                buildGeneral({
+                    id: 1,
+                    name: '갑',
+                    npcState: 0,
+                    items: {
+                        horse: 'che_명마_12_옥란백용구',
+                        weapon: 'che_무기_15_의천검',
+                        book: 'che_서적_01_효경전',
+                        item: 'che_저지_삼황내문',
+                    },
+                }),
+                buildGeneral({
+                    id: 2,
+                    name: '을',
+                    npcState: 1,
+                    items: {
+                        horse: 'che_명마_12_사륜거',
+                        weapon: 'che_무기_01_단도',
+                        item: 'che_부적_태현청생부',
+                    },
+                }),
+            ],
+            { hiddenSeed: process.env.REF_HIDDEN_SEED }
+        );
+
+        await createLostUniqueItemHandler({ getWorld: () => world, itemModules: modules })([0.2], environment, event);
+
+        expect(world.getGeneralById(1)?.role.items).toEqual({
+            horse: 'che_명마_12_옥란백용구',
+            weapon: 'che_무기_15_의천검',
+            book: 'che_서적_01_효경전',
+            item: 'che_저지_삼황내문',
+        });
+        expect(world.getGeneralById(2)?.role.items).toEqual({
+            horse: null,
+            weapon: 'che_무기_01_단도',
+            book: null,
+            item: 'che_부적_태현청생부',
+        });
+        expect(world.peekDirtyState().logs.map((log) => log.text)).toEqual([
+            '<C>사륜거(+12)</>를 잃었습니다.',
+            '<R><b>【망실】</b></>불운하게도 <Y>을</>이 한 번에 유니크 <C>1</>종을 잃었습니다! (총 <C>1</>개)',
+        ]);
+    });
+
+    it('merges every active inheritance source except previous into rank values', async () => {
+        const world = buildWorld([
+            buildGeneral({
+                id: 1,
+                name: '갑',
+                npcState: 0,
+                meta: {
+                    belong: 3,
+                    inherit_lived_month: 2,
+                    max_domestic_critical: 4,
+                    inherit_active_action: 5,
+                    dex1: 1000,
+                    dex2: 0,
+                    dex3: 0,
+                    dex4: 0,
+                    dex5: 0,
+                    rank_warnum: 2,
+                    firenum: 1,
+                    betwin: 2,
+                    betgold: 4000,
+                    betwingold: 2000,
+                    inherit_earned_act: 11,
+                    inherit_spent_dyn: 9,
+                },
+                inheritancePoints: {
+                    previous: 999,
+                    unifier: 6,
+                    tournament: 7,
+                },
+            }),
+        ]);
+
+        await createMergeInheritPointRankHandler({ getWorld: () => world })([], environment, event);
+
+        expect(world.getGeneralById(1)?.meta).toEqual(
+            expect.objectContaining({
+                inherit_earned_dyn: 100,
+                inherit_earned: 111,
+                inherit_spent: 9,
+            })
+        );
+    });
+
+    it('uses persisted per-key values after unification', async () => {
+        const stored = Object.fromEntries(
+            [
+                'lived_month',
+                'max_domestic_critical',
+                'active_action',
+                'unifier',
+                'tournament',
+                'max_belong',
+                'combat',
+                'sabotage',
+                'dex',
+                'betting',
+            ].map((key, index) => [key, index + 1])
+        );
+        const world = buildWorld(
+            [
+                buildGeneral({
+                    id: 1,
+                    name: '갑',
+                    npcState: 0,
+                    meta: { inherit_earned_act: 5, inherit_spent_dyn: 3 },
+                    inheritancePoints: { previous: 999, ...stored },
+                }),
+            ],
+            { isunited: 1 }
+        );
+
+        await createMergeInheritPointRankHandler({ getWorld: () => world })([], environment, event);
+
+        expect(world.getGeneralById(1)?.meta).toEqual(
+            expect.objectContaining({
+                inherit_earned_dyn: 55,
+                inherit_earned: 60,
+                inherit_spent: 3,
+            })
+        );
+    });
+});
diff --git a/app/game-engine/test/monthlyUniqueInheritPersistence.integration.test.ts b/app/game-engine/test/monthlyUniqueInheritPersistence.integration.test.ts
new file mode 100644
index 0000000..a7f67c6
--- /dev/null
+++ b/app/game-engine/test/monthlyUniqueInheritPersistence.integration.test.ts
@@ -0,0 +1,296 @@
+import { afterAll, beforeAll, describe, expect, it } from 'vitest';
+import { loadActionModuleBundle, type Nation } from '@sammo-ts/logic';
+import { createGamePostgresConnector, type GamePrismaClient } from '@sammo-ts/infra';
+
+import { createDatabaseTurnHooks } from '../src/turn/databaseHooks.js';
+import { InMemoryTurnWorld } from '../src/turn/inMemoryWorld.js';
+import { loadTurnWorldFromDatabase } from '../src/turn/worldLoader.js';
+import {
+    createLostUniqueItemHandler,
+    createMergeInheritPointRankHandler,
+} from '../src/turn/monthlyUniqueInheritAction.js';
+import type { TurnEvent, TurnGeneral, TurnWorldSnapshot, TurnWorldState } from '../src/turn/types.js';
+
+const databaseUrl = process.env.INPUT_EVENT_DATABASE_URL;
+const integration = describe.skipIf(!databaseUrl);
+const nationId = 990_101;
+const generalId = 990_101;
+
+const event: TurnEvent = {
+    id: 1,
+    targetCode: 'month',
+    priority: 9_000,
+    condition: true,
+    action: [],
+    meta: {},
+};
+
+const nation: Nation = {
+    id: nationId,
+    name: '망실검증국',
+    color: '#777777',
+    capitalCityId: null,
+    chiefGeneralId: null,
+    gold: 0,
+    rice: 0,
+    power: 0,
+    level: 2,
+    typeCode: 'che_중립',
+    meta: {},
+};
+
+const general: TurnGeneral = {
+    id: generalId,
+    userId: 'monthly-unique-user',
+    name: '망실대상',
+    nationId,
+    cityId: 0,
+    troopId: 0,
+    stats: { leadership: 50, strength: 50, intelligence: 50 },
+    experience: 0,
+    dedication: 0,
+    officerLevel: 1,
+    role: {
+        personality: null,
+        specialDomestic: null,
+        specialWar: null,
+        items: {
+            horse: 'che_명마_12_옥란백용구',
+            weapon: 'che_무기_01_단도',
+            book: null,
+            item: 'che_저지_삼황내문',
+        },
+    },
+    injury: 0,
+    gold: 0,
+    rice: 0,
+    crew: 0,
+    crewTypeId: 0,
+    train: 0,
+    atmos: 0,
+    age: 30,
+    startAge: 20,
+    npcState: 0,
+    triggerState: { flags: {}, counters: {}, modifiers: {}, meta: {} },
+    meta: {
+        killturn: 1,
+        belong: 3,
+        inherit_lived_month: 2,
+        max_domestic_critical: 4,
+        inherit_active_action: 5,
+        dex1: 1000,
+        dex2: 0,
+        dex3: 0,
+        dex4: 0,
+        dex5: 0,
+        rank_warnum: 2,
+        firenum: 1,
+        betwin: 2,
+        betgold: 4000,
+        betwingold: 2000,
+        inherit_earned_act: 11,
+        inherit_spent_dyn: 9,
+    },
+    inheritancePoints: {
+        previous: 999,
+        unifier: 6,
+        tournament: 7,
+    },
+    lastTurn: { command: '휴식' },
+    turnTime: new Date('2026-07-25T00:00:00.000Z'),
+};
+
+integration('monthly unique-item and inheritance-rank persistence', () => {
+    let db: GamePrismaClient;
+    let closeDb: (() => Promise<void>) | undefined;
+
+    beforeAll(async () => {
+        const connector = createGamePostgresConnector({ url: databaseUrl! });
+        await connector.connect();
+        db = connector.prisma;
+        closeDb = () => connector.disconnect();
+        await db.logEntry.deleteMany({ where: { generalId } });
+        await db.rankData.deleteMany({ where: { generalId } });
+        await db.inheritancePoint.deleteMany({ where: { userId: general.userId! } });
+        await db.general.deleteMany({ where: { id: generalId } });
+        await db.nation.deleteMany({ where: { id: nationId } });
+    });
+
+    afterAll(async () => {
+        await db.logEntry.deleteMany({ where: { generalId } });
+        await db.rankData.deleteMany({ where: { generalId } });
+        await db.inheritancePoint.deleteMany({ where: { userId: general.userId! } });
+        await db.general.deleteMany({ where: { id: generalId } });
+        await db.nation.deleteMany({ where: { id: nationId } });
+        await closeDb?.();
+    });
+
+    it('commits removed item slots, item inventory, logs, and all merged rank columns', async () => {
+        await db.nation.create({
+            data: {
+                id: nation.id,
+                name: nation.name,
+                color: nation.color,
+                level: nation.level,
+                typeCode: nation.typeCode,
+                meta: {},
+            },
+        });
+        await db.general.create({
+            data: {
+                id: general.id,
+                userId: general.userId,
+                name: general.name,
+                nationId: general.nationId,
+                cityId: general.cityId,
+                leadership: general.stats.leadership,
+                strength: general.stats.strength,
+                intel: general.stats.intelligence,
+                age: general.age,
+                startAge: general.startAge,
+                npcState: general.npcState,
+                horseCode: general.role.items.horse ?? 'None',
+                weaponCode: general.role.items.weapon ?? 'None',
+                itemCode: general.role.items.item ?? 'None',
+                turnTime: general.turnTime,
+                meta: general.meta,
+            },
+        });
+        await db.rankData.createMany({
+            data: [
+                { generalId, nationId, type: 'warnum', value: 2 },
+                { generalId, nationId, type: 'firenum', value: 1 },
+                { generalId, nationId, type: 'betwin', value: 2 },
+                { generalId, nationId, type: 'betgold', value: 4000 },
+                { generalId, nationId, type: 'betwingold', value: 2000 },
+                { generalId, nationId, type: 'inherit_earned', value: 999 },
+                { generalId, nationId, type: 'inherit_earned_act', value: 11 },
+                { generalId, nationId, type: 'inherit_earned_dyn', value: 999 },
+                { generalId, nationId, type: 'inherit_spent', value: 999 },
+                { generalId, nationId, type: 'inherit_spent_dyn', value: 9 },
+            ],
+        });
+        await db.inheritancePoint.createMany({
+            data: Object.entries(general.inheritancePoints!).map(([key, value]) => ({
+                userId: general.userId!,
+                key,
+                value,
+            })),
+        });
+        const worldRow = await db.worldState.create({
+            data: {
+                scenarioCode: 'monthly-unique-inherit-persistence',
+                currentYear: 210,
+                currentMonth: 1,
+                tickSeconds: 600,
+                config: {
+                    stat: { total: 300, min: 10, max: 100, npcTotal: 150, npcMax: 75, npcMin: 10, chiefMin: 70 },
+                    iconPath: '.',
+                    map: {},
+                    const: {},
+                    environment: { mapName: 'che', unitSet: 'che' },
+                },
+                meta: { hiddenSeed: 'monthly-unique-inherit-persistence' },
+            },
+        });
+        const state: TurnWorldState = {
+            id: worldRow.id,
+            currentYear: 210,
+            currentMonth: 1,
+            tickSeconds: 600,
+            lastTurnTime: general.turnTime,
+            meta: { hiddenSeed: 'monthly-unique-inherit-persistence' },
+        };
+        const loaded = await loadTurnWorldFromDatabase({ databaseUrl: databaseUrl! });
+        const loadedGeneral = loaded.snapshot.generals.find((entry) => entry.id === generalId);
+        expect(loadedGeneral?.meta).toEqual(
+            expect.objectContaining({
+                rank_warnum: 2,
+                firenum: 1,
+                betwin: 2,
+                betgold: 4000,
+                betwingold: 2000,
+                inherit_earned_act: 11,
+                inherit_spent_dyn: 9,
+            })
+        );
+        expect(loadedGeneral?.inheritancePoints).toEqual(general.inheritancePoints);
+        const snapshot: TurnWorldSnapshot = {
+            scenarioConfig: {
+                stat: { total: 300, min: 10, max: 100, npcTotal: 150, npcMax: 75, npcMin: 10, chiefMin: 70 },
+                iconPath: '.',
+                map: {},
+                const: {},
+                environment: { mapName: 'test', unitSet: 'default' },
+            },
+            map: { id: 'test', name: 'test', cities: [] },
+            generals: [general],
+            cities: [],
+            nations: [nation],
+            troops: [],
+            diplomacy: [],
+            events: [event],
+            initialEvents: [],
+        };
+        const world = new InMemoryTurnWorld(state, snapshot, {
+            schedule: { entries: [{ startMinute: 0, tickMinutes: 10 }] },
+        });
+        const hooks = await createDatabaseTurnHooks(databaseUrl!, world);
+        const modules = (await loadActionModuleBundle()).itemModules;
+        const environment = {
+            year: 210,
+            month: 1,
+            startyear: 180,
+            currentEventID: 1,
+            turnTime: state.lastTurnTime,
+        };
+
+        try {
+            await createLostUniqueItemHandler({ getWorld: () => world, itemModules: modules })([1], environment, event);
+            await createMergeInheritPointRankHandler({ getWorld: () => world })([], environment, event);
+            await hooks.hooks.flushChanges?.({
+                lastTurnTime: state.lastTurnTime.toISOString(),
+                processedGenerals: 0,
+                processedTurns: 2,
+                durationMs: 0,
+                partial: false,
+            });
+
+            const row = await db.general.findUniqueOrThrow({ where: { id: generalId } });
+            expect(row).toMatchObject({
+                horseCode: 'None',
+                weaponCode: 'che_무기_01_단도',
+                itemCode: 'None',
+            });
+            expect(row.meta).toHaveProperty('itemInventory');
+            expect(
+                await db.rankData.findMany({
+                    where: {
+                        generalId,
+                        type: {
+                            in: [
+                                'inherit_earned',
+                                'inherit_earned_act',
+                                'inherit_earned_dyn',
+                                'inherit_spent',
+                                'inherit_spent_dyn',
+                            ],
+                        },
+                    },
+                    orderBy: { type: 'asc' },
+                    select: { type: true, value: true },
+                })
+            ).toEqual([
+                { type: 'inherit_earned', value: 111 },
+                { type: 'inherit_earned_act', value: 11 },
+                { type: 'inherit_earned_dyn', value: 100 },
+                { type: 'inherit_spent', value: 9 },
+                { type: 'inherit_spent_dyn', value: 9 },
+            ]);
+            expect(await db.logEntry.count({ where: { generalId } })).toBe(2);
+        } finally {
+            await hooks.close();
+            await db.worldState.deleteMany({ where: { id: worldRow.id } });
+        }
+    });
+});