diff --git a/app/game-engine/src/turn/reservedTurnActionContext.ts b/app/game-engine/src/turn/reservedTurnActionContext.ts
index e1f14c7..f7a1657 100644
--- a/app/game-engine/src/turn/reservedTurnActionContext.ts
+++ b/app/game-engine/src/turn/reservedTurnActionContext.ts
@@ -216,6 +216,11 @@ const ACTION_CONTEXT_BUILDERS: Record<string, ActionContextBuilder> = {
             startYear: resolveStartYear(options.world, options.scenarioMeta),
         };
     },
+    che_불가침제의: (base, options) => ({
+        ...base,
+        currentYear: options.world.currentYear,
+        currentMonth: options.world.currentMonth,
+    }),
 };
 
 export const buildActionContext = (
diff --git a/packages/logic/src/actions/instant/nation/che_불가침수락.ts b/packages/logic/src/actions/instant/nation/che_불가침수락.ts
new file mode 100644
index 0000000..9df899e
--- /dev/null
+++ b/packages/logic/src/actions/instant/nation/che_불가침수락.ts
@@ -0,0 +1,244 @@
+import type { GeneralTriggerState } from '../../../domain/entities.js';
+import type { Constraint, ConstraintContext } from '../../../constraints/types.js';
+import {
+    beChief,
+    destGeneralInDestNation,
+    disallowDiplomacyBetweenStatus,
+    existsDestGeneral,
+    existsDestNation,
+    notBeNeutral,
+    occupiedCity,
+    suppliedCity,
+} from '../../../constraints/presets.js';
+import { allow, unknownOrDeny } from '../../../constraints/helpers.js';
+import type { GeneralActionDefinition } from '../../definition.js';
+import type {
+    GeneralActionOutcome,
+    GeneralActionResolveContext,
+} from '../../engine.js';
+import { createDiplomacyPatchEffect, createLogEffect } from '../../engine.js';
+import { LogCategory, LogFormat, LogScope } from '../../../logging/types.js';
+
+export interface NonAggressionAcceptArgs {
+    destNationId: number;
+    destGeneralId: number;
+    year: number;
+    month: number;
+}
+
+export interface NonAggressionAcceptContext<
+    TriggerState extends GeneralTriggerState = GeneralTriggerState
+> extends GeneralActionResolveContext<TriggerState> {
+    currentYear: number;
+    currentMonth: number;
+}
+
+const ACTION_NAME = '불가침 수락';
+const DIPLOMACY_NON_AGGRESSION = 7;
+
+const parseNationId = (raw: unknown): number | null => {
+    if (typeof raw !== 'number' || !Number.isFinite(raw)) {
+        return null;
+    }
+    return raw > 0 ? Math.floor(raw) : null;
+};
+
+const parseGeneralId = (raw: unknown): number | null => {
+    if (typeof raw !== 'number' || !Number.isFinite(raw)) {
+        return null;
+    }
+    return raw > 0 ? Math.floor(raw) : null;
+};
+
+const parseYear = (raw: unknown): number | null => {
+    if (typeof raw !== 'number' || !Number.isFinite(raw)) {
+        return null;
+    }
+    return raw >= 0 ? Math.floor(raw) : null;
+};
+
+const parseMonth = (raw: unknown): number | null => {
+    if (typeof raw !== 'number' || !Number.isFinite(raw)) {
+        return null;
+    }
+    const month = Math.floor(raw);
+    return month >= 1 && month <= 12 ? month : null;
+};
+
+const resolveMonthIndex = (year: number, month: number): number =>
+    year * 12 + month - 1;
+
+const requireFutureTerm = (): Constraint => ({
+    name: 'RequireNonAggressionFutureTerm',
+    requires: () => [
+        { kind: 'arg', key: 'year' },
+        { kind: 'arg', key: 'month' },
+        { kind: 'env', key: 'year' },
+        { kind: 'env', key: 'month' },
+    ],
+    test: (ctx) => {
+        const yearValue = typeof ctx.args.year === 'number' ? ctx.args.year : null;
+        const monthValue =
+            typeof ctx.args.month === 'number' ? ctx.args.month : null;
+        const envYearValue = typeof ctx.env.year === 'number' ? ctx.env.year : null;
+        const envMonthValue =
+            typeof ctx.env.month === 'number' ? ctx.env.month : null;
+        const missing = [];
+
+        if (yearValue === null) {
+            missing.push({ kind: 'arg', key: 'year' } as const);
+        }
+        if (monthValue === null) {
+            missing.push({ kind: 'arg', key: 'month' } as const);
+        }
+        if (envYearValue === null) {
+            missing.push({ kind: 'env', key: 'year' } as const);
+        }
+        if (envMonthValue === null) {
+            missing.push({ kind: 'env', key: 'month' } as const);
+        }
+
+        if (
+            missing.length > 0 ||
+            yearValue === null ||
+            monthValue === null ||
+            envYearValue === null ||
+            envMonthValue === null
+        ) {
+            return unknownOrDeny(ctx, missing, '기한 정보가 없습니다.');
+        }
+
+        const currentMonth = resolveMonthIndex(envYearValue, envMonthValue);
+        const targetMonth = yearValue * 12 + monthValue;
+        if (targetMonth <= currentMonth) {
+            return {
+                kind: 'deny',
+                reason: '이미 기한이 지났습니다.',
+            };
+        }
+        return allow();
+    },
+});
+
+const notSameDestGeneral = (): Constraint => ({
+    name: 'NotSameDestGeneral',
+    requires: () => [{ kind: 'arg', key: 'destGeneralId' }],
+    test: (ctx) => {
+        const destGeneralId = ctx.args.destGeneralId;
+        if (typeof destGeneralId !== 'number') {
+            return unknownOrDeny(
+                ctx,
+                [{ kind: 'arg', key: 'destGeneralId' }],
+                '장수 정보가 없습니다.'
+            );
+        }
+        if (destGeneralId === ctx.actorId) {
+            return { kind: 'deny', reason: '대상이 올바르지 않습니다.' };
+        }
+        return allow();
+    },
+});
+
+// 불가침 수락은 메시지와 연결되는 즉시 국가 커맨드로 사용한다.
+export class ActionDefinition<
+    TriggerState extends GeneralTriggerState = GeneralTriggerState
+> implements GeneralActionDefinition<
+        TriggerState,
+        NonAggressionAcceptArgs,
+        NonAggressionAcceptContext<TriggerState>
+    > {
+    public readonly key = 'che_불가침수락';
+    public readonly name = ACTION_NAME;
+
+    parseArgs(raw: unknown): NonAggressionAcceptArgs | null {
+        const data = raw as {
+            destNationId?: unknown;
+            destGeneralId?: unknown;
+            year?: unknown;
+            month?: unknown;
+        };
+        const destNationId = parseNationId(data?.destNationId);
+        const destGeneralId = parseGeneralId(data?.destGeneralId);
+        const year = parseYear(data?.year);
+        const month = parseMonth(data?.month);
+        if (
+            destNationId === null ||
+            destGeneralId === null ||
+            year === null ||
+            month === null
+        ) {
+            return null;
+        }
+        return { destNationId, destGeneralId, year, month };
+    }
+
+    buildConstraints(
+        _ctx: ConstraintContext,
+        _args: NonAggressionAcceptArgs
+    ): Constraint[] {
+        return [
+            beChief(),
+            notBeNeutral(),
+            occupiedCity(),
+            suppliedCity(),
+            existsDestNation(),
+            existsDestGeneral(),
+            destGeneralInDestNation(),
+            notSameDestGeneral(),
+            requireFutureTerm(),
+            disallowDiplomacyBetweenStatus({
+                0: '아국과 이미 교전중입니다.',
+                1: '아국과 이미 선포중입니다.',
+            }),
+        ];
+    }
+
+    resolve(
+        context: NonAggressionAcceptContext<TriggerState>,
+        args: NonAggressionAcceptArgs
+    ): GeneralActionOutcome<TriggerState> {
+        const nationId = context.nation?.id;
+        if (nationId === undefined || nationId <= 0) {
+            return {
+                effects: [
+                    createLogEffect(
+                        `${ACTION_NAME}을 준비했지만 국가 정보가 없습니다.`,
+                        {
+                            scope: LogScope.GENERAL,
+                            category: LogCategory.ACTION,
+                            format: LogFormat.MONTH,
+                        }
+                    ),
+                ],
+            };
+        }
+
+        const currentMonth = resolveMonthIndex(
+            context.currentYear,
+            context.currentMonth
+        );
+        const targetMonth = args.year * 12 + args.month;
+        const term = Math.max(0, targetMonth - currentMonth);
+
+        return {
+            effects: [
+                createDiplomacyPatchEffect(nationId, args.destNationId, {
+                    state: DIPLOMACY_NON_AGGRESSION,
+                    term,
+                }),
+                createDiplomacyPatchEffect(args.destNationId, nationId, {
+                    state: DIPLOMACY_NON_AGGRESSION,
+                    term,
+                }),
+                createLogEffect(
+                    `${ACTION_NAME}을 실행했습니다. (국가 ${args.destNationId})`,
+                    {
+                        scope: LogScope.GENERAL,
+                        category: LogCategory.ACTION,
+                        format: LogFormat.MONTH,
+                    }
+                ),
+            ],
+        };
+    }
+}
diff --git a/packages/logic/src/actions/instant/nation/index.ts b/packages/logic/src/actions/instant/nation/index.ts
index cb0ff5c..8df5867 100644
--- a/packages/logic/src/actions/instant/nation/index.ts
+++ b/packages/logic/src/actions/instant/nation/index.ts
@@ -1 +1 @@
-export {};
+export * from './che_불가침수락.js';
diff --git a/packages/logic/src/actions/turn/nation/che_불가침제의.ts b/packages/logic/src/actions/turn/nation/che_불가침제의.ts
new file mode 100644
index 0000000..20089bb
--- /dev/null
+++ b/packages/logic/src/actions/turn/nation/che_불가침제의.ts
@@ -0,0 +1,170 @@
+import type { GeneralTriggerState } from '../../../domain/entities.js';
+import type { Constraint, ConstraintContext } from '../../../constraints/types.js';
+import {
+    beChief,
+    differentDestNation,
+    disallowDiplomacyBetweenStatus,
+    existsDestNation,
+    notBeNeutral,
+} from '../../../constraints/presets.js';
+import { allow, unknownOrDeny } from '../../../constraints/helpers.js';
+import type { GeneralActionDefinition } from '../../definition.js';
+import type {
+    GeneralActionOutcome,
+    GeneralActionResolveContext,
+} from '../../engine.js';
+import { createLogEffect } from '../../engine.js';
+import { LogCategory, LogFormat, LogScope } from '../../../logging/types.js';
+import type { TurnCommandEnv } from '../commandEnv.js';
+import type { NationTurnCommandSpec } from './index.js';
+
+export interface NonAggressionProposalArgs {
+    destNationId: number;
+    year: number;
+    month: number;
+}
+
+const ACTION_NAME = '불가침 제의';
+const MIN_TERM_MONTHS = 6;
+
+const parseNationId = (raw: unknown): number | null => {
+    if (typeof raw !== 'number' || !Number.isFinite(raw)) {
+        return null;
+    }
+    return raw > 0 ? Math.floor(raw) : null;
+};
+
+const parseYear = (raw: unknown): number | null => {
+    if (typeof raw !== 'number' || !Number.isFinite(raw)) {
+        return null;
+    }
+    return raw >= 0 ? Math.floor(raw) : null;
+};
+
+const parseMonth = (raw: unknown): number | null => {
+    if (typeof raw !== 'number' || !Number.isFinite(raw)) {
+        return null;
+    }
+    const month = Math.floor(raw);
+    return month >= 1 && month <= 12 ? month : null;
+};
+
+const resolveMonthIndex = (year: number, month: number): number =>
+    year * 12 + month - 1;
+
+const requireMinimumTerm = (minMonths: number): Constraint => ({
+    name: 'RequireNonAggressionMinimumTerm',
+    requires: () => [
+        { kind: 'arg', key: 'year' },
+        { kind: 'arg', key: 'month' },
+        { kind: 'env', key: 'year' },
+        { kind: 'env', key: 'month' },
+    ],
+    test: (ctx) => {
+        const yearValue = typeof ctx.args.year === 'number' ? ctx.args.year : null;
+        const monthValue = typeof ctx.args.month === 'number' ? ctx.args.month : null;
+        const envYearValue = typeof ctx.env.year === 'number' ? ctx.env.year : null;
+        const envMonthValue =
+            typeof ctx.env.month === 'number' ? ctx.env.month : null;
+        const missing = [];
+
+        if (yearValue === null) {
+            missing.push({ kind: 'arg', key: 'year' } as const);
+        }
+        if (monthValue === null) {
+            missing.push({ kind: 'arg', key: 'month' } as const);
+        }
+        if (envYearValue === null) {
+            missing.push({ kind: 'env', key: 'year' } as const);
+        }
+        if (envMonthValue === null) {
+            missing.push({ kind: 'env', key: 'month' } as const);
+        }
+
+        if (
+            missing.length > 0 ||
+            yearValue === null ||
+            monthValue === null ||
+            envYearValue === null ||
+            envMonthValue === null
+        ) {
+            return unknownOrDeny(ctx, missing, '기한 정보가 없습니다.');
+        }
+
+        const currentMonth = resolveMonthIndex(envYearValue, envMonthValue);
+        const targetMonth = resolveMonthIndex(yearValue, monthValue);
+        if (targetMonth < currentMonth + minMonths) {
+            return {
+                kind: 'deny',
+                reason: `기한은 ${minMonths}개월 이상이어야 합니다.`,
+            };
+        }
+        return allow();
+    },
+});
+
+// 불가침 제의를 처리하는 국가 커맨드.
+export class ActionDefinition<
+    TriggerState extends GeneralTriggerState = GeneralTriggerState
+> implements GeneralActionDefinition<TriggerState, NonAggressionProposalArgs> {
+    public readonly key = 'che_불가침제의';
+    public readonly name = ACTION_NAME;
+
+    parseArgs(raw: unknown): NonAggressionProposalArgs | null {
+        const data = raw as {
+            destNationId?: unknown;
+            year?: unknown;
+            month?: unknown;
+        };
+        const destNationId = parseNationId(data?.destNationId);
+        const year = parseYear(data?.year);
+        const month = parseMonth(data?.month);
+        if (destNationId === null || year === null || month === null) {
+            return null;
+        }
+        return { destNationId, year, month };
+    }
+
+    buildConstraints(
+        _ctx: ConstraintContext,
+        _args: NonAggressionProposalArgs
+    ): Constraint[] {
+        return [
+            beChief(),
+            notBeNeutral(),
+            existsDestNation(),
+            differentDestNation(),
+            requireMinimumTerm(MIN_TERM_MONTHS),
+            disallowDiplomacyBetweenStatus({
+                0: '아국과 이미 교전중입니다.',
+                1: '아국과 이미 선포중입니다.',
+            }),
+        ];
+    }
+
+    resolve(
+        _context: GeneralActionResolveContext<TriggerState>,
+        args: NonAggressionProposalArgs
+    ): GeneralActionOutcome<TriggerState> {
+        return {
+            effects: [
+                createLogEffect(
+                    `${ACTION_NAME}을 준비했습니다. (국가 ${args.destNationId})`,
+                    {
+                        scope: LogScope.GENERAL,
+                        category: LogCategory.ACTION,
+                        format: LogFormat.MONTH,
+                    }
+                ),
+            ],
+        };
+    }
+}
+
+export const commandSpec: NationTurnCommandSpec = {
+    key: 'che_불가침제의',
+    category: '외교',
+    reqArg: true,
+    args: { destNationId: 0, year: 0, month: 0 },
+    createDefinition: (_env: TurnCommandEnv) => new ActionDefinition(),
+};
diff --git a/packages/logic/src/actions/turn/nation/index.ts b/packages/logic/src/actions/turn/nation/index.ts
index 61f8cbf..703d949 100644
--- a/packages/logic/src/actions/turn/nation/index.ts
+++ b/packages/logic/src/actions/turn/nation/index.ts
@@ -4,6 +4,7 @@ import type * as NationRestModule from './휴식.js';
 import type * as AwardModule from './che_포상.js';
 import type * as AssignmentModule from './che_발령.js';
 import type * as DeclarationModule from './che_선전포고.js';
+import type * as NonAggressionProposalModule from './che_불가침제의.js';
 
 
 
@@ -11,7 +12,8 @@ export type NationTurnCommandModule =
     | typeof NationRestModule
     | typeof AwardModule
     | typeof AssignmentModule
-    | typeof DeclarationModule;
+    | typeof DeclarationModule
+    | typeof NonAggressionProposalModule;
 
 export type NationTurnCommandImporter = () => Promise<NationTurnCommandModule>;
 
@@ -20,6 +22,7 @@ const defaultImporters = {
     che_포상: async () => import('./che_포상.js'),
     che_발령: async () => import('./che_발령.js'),
     che_선전포고: async () => import('./che_선전포고.js'),
+    che_불가침제의: async () => import('./che_불가침제의.js'),
 } as const satisfies Record<string, NationTurnCommandImporter>;
 
 export type NationTurnCommandKey = keyof typeof defaultImporters;
@@ -95,3 +98,6 @@ export {
 export {
     ActionDefinition as DeclarationActionDefinition,
 } from './che_선전포고.js';
+export {
+    ActionDefinition as NonAggressionProposalActionDefinition,
+} from './che_불가침제의.js';
diff --git a/packages/logic/src/constraints/general.ts b/packages/logic/src/constraints/general.ts
index fee6268..49969d2 100644
--- a/packages/logic/src/constraints/general.ts
+++ b/packages/logic/src/constraints/general.ts
@@ -1,5 +1,11 @@
 import type { General } from '../domain/entities.js';
-import { allow, readDestGeneral, resolveDestGeneralId, unknownOrDeny } from './helpers.js';
+import {
+    allow,
+    readDestGeneral,
+    resolveDestGeneralId,
+    resolveDestNationId,
+    unknownOrDeny,
+} from './helpers.js';
 import type { Constraint, ConstraintContext, RequirementKey, StateView } from './types.js';
 
 export const notBeNeutral = (): Constraint => ({
@@ -172,6 +178,47 @@ export const existsDestGeneral = (): Constraint => ({
     },
 });
 
+export const destGeneralInDestNation = (): Constraint => ({
+    name: 'DestGeneralInDestNation',
+    requires: (ctx) => {
+        const reqs: RequirementKey[] = [];
+        const destGeneralId = resolveDestGeneralId(ctx);
+        if (destGeneralId !== undefined) {
+            reqs.push({ kind: 'destGeneral', id: destGeneralId });
+        }
+        const destNationId = resolveDestNationId(ctx);
+        if (destNationId !== undefined) {
+            reqs.push({ kind: 'destNation', id: destNationId });
+        }
+        return reqs;
+    },
+    test: (ctx, view) => {
+        const destGeneral = readDestGeneral(ctx, view);
+        if (!destGeneral) {
+            const destGeneralId = resolveDestGeneralId(ctx);
+            if (destGeneralId === undefined) {
+                return unknownOrDeny(ctx, [], '장수 정보가 없습니다.');
+            }
+            const req: RequirementKey = {
+                kind: 'destGeneral',
+                id: destGeneralId,
+            };
+            return unknownOrDeny(ctx, [req], '장수 정보가 없습니다.');
+        }
+        const destNationId = resolveDestNationId(ctx);
+        if (destNationId === undefined) {
+            return unknownOrDeny(ctx, [], '국가 정보가 없습니다.');
+        }
+        if (destGeneral.nationId !== destNationId) {
+            return {
+                kind: 'deny',
+                reason: '제의 장수가 국가 소속이 아닙니다.',
+            };
+        }
+        return allow();
+    },
+});
+
 export const friendlyDestGeneral = (): Constraint => ({
     name: 'FriendlyDestGeneral',
     requires: (ctx) => {
diff --git a/packages/logic/src/constraints/nation.ts b/packages/logic/src/constraints/nation.ts
index fa00399..412ec1d 100644
--- a/packages/logic/src/constraints/nation.ts
+++ b/packages/logic/src/constraints/nation.ts
@@ -1,5 +1,12 @@
 import type { General, Nation } from '../domain/entities.js';
-import { allow, readMetaNumber, readNation, resolveDestNationId, unknownOrDeny } from './helpers.js';
+import {
+    allow,
+    readGeneral,
+    readMetaNumber,
+    readNation,
+    resolveDestNationId,
+    unknownOrDeny,
+} from './helpers.js';
 import type { Constraint, ConstraintContext, RequirementKey, StateView } from './types.js';
 
 export const notWanderingNation = (): Constraint => ({
@@ -166,3 +173,42 @@ export const existsDestNation = (): Constraint => ({
         return allow();
     },
 });
+
+export const differentDestNation = (): Constraint => ({
+    name: 'DifferentDestNation',
+    requires: (ctx) => {
+        const reqs: RequirementKey[] = [];
+        if (ctx.nationId !== undefined) {
+            reqs.push({ kind: 'nation', id: ctx.nationId });
+        } else {
+            reqs.push({ kind: 'general', id: ctx.actorId });
+        }
+        const destNationId = resolveDestNationId(ctx);
+        if (destNationId !== undefined) {
+            reqs.push({ kind: 'destNation', id: destNationId });
+        }
+        return reqs;
+    },
+    test: (ctx, view) => {
+        const destNationId = resolveDestNationId(ctx);
+        if (destNationId === undefined) {
+            return unknownOrDeny(ctx, [], '국가 정보가 없습니다.');
+        }
+        let baseNationId = ctx.nationId;
+        if (baseNationId === undefined) {
+            const general = readGeneral(ctx, view);
+            if (!general) {
+                const req: RequirementKey = {
+                    kind: 'general',
+                    id: ctx.actorId,
+                };
+                return unknownOrDeny(ctx, [req], '국가 정보가 없습니다.');
+            }
+            baseNationId = general.nationId;
+        }
+        if (baseNationId === destNationId) {
+            return { kind: 'deny', reason: '같은 국가입니다.' };
+        }
+        return allow();
+    },
+});
diff --git a/resources/turn-commands/default.json b/resources/turn-commands/default.json
index c9cc037..9ff164c 100644
--- a/resources/turn-commands/default.json
+++ b/resources/turn-commands/default.json
@@ -24,6 +24,7 @@
         "휴식",
         "che_포상",
         "che_발령",
-        "che_선전포고"
+        "che_선전포고",
+        "che_불가침제의"
     ]
 }