diff --git a/app/game-api/src/router/join/index.ts b/app/game-api/src/router/join/index.ts
index af6371b..a086c0c 100644
--- a/app/game-api/src/router/join/index.ts
+++ b/app/game-api/src/router/join/index.ts
@@ -30,6 +30,28 @@ const DEFAULT_JOIN_STAT = {
     bonusMax: 5,
 };
 
+const buildSpecialityAge = (
+    retirementYear: number,
+    age: number,
+    relativeYear: number,
+    divisor: number
+): number => Math.max(Math.round((retirementYear - age) / divisor - relativeYear / 2), 3) + age;
+
+export const resolveJoinSpecialityAges = (options: {
+    retirementYear: number;
+    age: number;
+    relativeYear: number;
+    scenarioId: number;
+}): { domestic: number; war: number } => {
+    if (Number.isFinite(options.scenarioId) && options.scenarioId >= 1000) {
+        return { domestic: options.age + 3, war: options.age + 3 };
+    }
+    return {
+        domestic: buildSpecialityAge(options.retirementYear, options.age, options.relativeYear, 12),
+        war: buildSpecialityAge(options.retirementYear, options.age, options.relativeYear, 6),
+    };
+};
+
 const resolveJoinStat = (worldState: WorldStateRow) => {
     const config = asRecord(worldState.config);
     const stat = asRecord(config.stat);
@@ -456,6 +478,27 @@ export const joinRouter = router({
                     typeof configConst.defaultSpecialDomestic === 'string' ? configConst.defaultSpecialDomestic : 'None';
                 const defaultSpecialWar =
                     typeof configConst.defaultSpecialWar === 'string' ? configConst.defaultSpecialWar : 'None';
+                const retirementYear =
+                    typeof configConst.retirementYear === 'number' && Number.isFinite(configConst.retirementYear)
+                        ? configConst.retirementYear
+                        : 80;
+                const worldMeta = asRecord(worldState.meta);
+                const scenarioMeta = asRecord(worldMeta.scenarioMeta);
+                const startYear =
+                    typeof scenarioMeta.startYear === 'number' && Number.isFinite(scenarioMeta.startYear)
+                        ? scenarioMeta.startYear
+                        : worldState.currentYear;
+                const relativeYear = Math.max(
+                    worldState.currentYear - startYear,
+                    0
+                );
+                const scenarioId = Number(worldMeta.scenarioId ?? worldState.scenarioCode);
+                const specialityAges = resolveJoinSpecialityAges({
+                    retirementYear,
+                    age,
+                    relativeYear,
+                    scenarioId,
+                });
 
                 const specialWar =
                     input.inheritSpecial && isWarTraitKey(input.inheritSpecial) ? input.inheritSpecial : defaultSpecialWar;
@@ -515,6 +558,8 @@ export const joinRouter = router({
                             createdBy: 'join',
                             ownerName: ctx.auth?.user.displayName ?? '',
                             killturn: 24,
+                            specage: specialityAges.domestic,
+                            specage2: specialityAges.war,
                         },
                     },
                 });
diff --git a/app/game-api/test/joinSpecialityAge.test.ts b/app/game-api/test/joinSpecialityAge.test.ts
new file mode 100644
index 0000000..233771b
--- /dev/null
+++ b/app/game-api/test/joinSpecialityAge.test.ts
@@ -0,0 +1,35 @@
+import { describe, expect, it } from 'vitest';
+
+import { resolveJoinSpecialityAges } from '../src/router/join/index.js';
+
+describe('join speciality ages', () => {
+    it('uses the legacy retirement formula outside custom scenarios', () => {
+        expect(
+            resolveJoinSpecialityAges({
+                retirementYear: 80,
+                age: 20,
+                relativeYear: 0,
+                scenarioId: 910,
+            })
+        ).toEqual({ domestic: 25, war: 30 });
+        expect(
+            resolveJoinSpecialityAges({
+                retirementYear: 80,
+                age: 30,
+                relativeYear: 4,
+                scenarioId: 910,
+            })
+        ).toEqual({ domestic: 33, war: 36 });
+    });
+
+    it('forces both speciality ages to age plus three for scenario 1000 and above', () => {
+        expect(
+            resolveJoinSpecialityAges({
+                retirementYear: 80,
+                age: 26,
+                relativeYear: 7,
+                scenarioId: 2220,
+            })
+        ).toEqual({ domestic: 29, war: 29 });
+    });
+});
diff --git a/app/game-engine/src/scenario/scenarioSeeder.ts b/app/game-engine/src/scenario/scenarioSeeder.ts
index 93e4b61..d9e1dd0 100644
--- a/app/game-engine/src/scenario/scenarioSeeder.ts
+++ b/app/game-engine/src/scenario/scenarioSeeder.ts
@@ -427,6 +427,7 @@ export const seedScenarioToDatabase = async (options: ScenarioSeedOptions): Prom
                     itemCode: general.item ?? 'None',
                     turnTime: now,
                     age: resolveGeneralAge(scenario.startYear ?? null, general.birthYear),
+                    startAge: resolveGeneralAge(scenario.startYear ?? null, general.birthYear),
                     personalCode: general.personality ?? 'None',
                     specialCode: general.special ?? 'None',
                     special2Code: general.specialWar ?? 'None',
diff --git a/app/game-engine/src/turn/types.ts b/app/game-engine/src/turn/types.ts
index 87e7c74..957a5b4 100644
--- a/app/game-engine/src/turn/types.ts
+++ b/app/game-engine/src/turn/types.ts
@@ -22,6 +22,7 @@ export interface TurnWorldState {
 
 export interface TurnGeneral extends General {
     userId?: string | null;
+    startAge?: number;
     bornYear?: number;
     deadYear?: number;
     affinity?: number | null;
diff --git a/app/game-engine/src/turn/worldLoader.ts b/app/game-engine/src/turn/worldLoader.ts
index e7229e6..0567674 100644
--- a/app/game-engine/src/turn/worldLoader.ts
+++ b/app/game-engine/src/turn/worldLoader.ts
@@ -200,6 +200,7 @@ const mapGeneralRow = (row: TurnEngineGeneralRow): TurnGeneral => {
         train: row.train,
         atmos: row.atmos,
         age: row.age,
+        startAge: row.startAge,
         npcState: row.npcState,
         bornYear: row.bornYear,
         deadYear: row.deadYear,
diff --git a/app/game-engine/test/scenarioSeeder.test.ts b/app/game-engine/test/scenarioSeeder.test.ts
index e453fc5..1a09c8c 100644
--- a/app/game-engine/test/scenarioSeeder.test.ts
+++ b/app/game-engine/test/scenarioSeeder.test.ts
@@ -28,6 +28,7 @@ type ScenarioSeederPrismaClient = {
     };
     general: {
         count(): Promise<number>;
+        findFirst(): Promise<{ age: number; startAge: number; meta: unknown } | null>;
     };
     diplomacy: {
         count(): Promise<number>;
@@ -116,6 +117,14 @@ describeDb('scenario database seed', () => {
             expect(diplomacyCount).toBe(seed.nations.length * Math.max(0, seed.nations.length - 1));
             expect(eventCount).toBe(seed.events.length);
             expect(generalCount).toBeGreaterThan(0);
+            const seededGeneral = await prisma.general.findFirst();
+            expect(seededGeneral?.startAge).toBe(seededGeneral?.age);
+            expect(seededGeneral?.meta).toEqual(
+                expect.objectContaining({
+                    specage: expect.any(Number),
+                    specage2: expect.any(Number),
+                })
+            );
 
             const freeCity = seed.cities.find((city) => city.nationId === 0);
             const occupiedCity = seed.cities.find((city) => city.nationId !== 0);
diff --git a/packages/infra/src/turnEngineDb.ts b/packages/infra/src/turnEngineDb.ts
index 0502eac..18d3429 100644
--- a/packages/infra/src/turnEngineDb.ts
+++ b/packages/infra/src/turnEngineDb.ts
@@ -42,6 +42,7 @@ export interface TurnEngineGeneralRow {
     train: number;
     atmos: number;
     age: number;
+    startAge: number;
     npcState: number;
     lastTurn: JsonValue;
     bornYear: number;
diff --git a/packages/logic/src/actions/turn/general/che_내정특기초기화.ts b/packages/logic/src/actions/turn/general/che_내정특기초기화.ts
index e01eec7..34f68e3 100644
--- a/packages/logic/src/actions/turn/general/che_내정특기초기화.ts
+++ b/packages/logic/src/actions/turn/general/che_내정특기초기화.ts
@@ -83,7 +83,8 @@ export class ActionDefinition<
                 ? [general.role.specialDomestic!]
                 : nextPreviousTypes;
         general.role.specialDomestic = null;
-        setMetaNumber(general.meta, 'specAge', general.age + 1);
+        delete general.meta.specAge;
+        setMetaNumber(general.meta, 'specage', general.age + 1);
         context.addLog('새로운 내정 특기를 가질 준비가 되었습니다.');
         return { effects: [] };
     }
diff --git a/packages/logic/src/actions/turn/general/che_전투특기초기화.ts b/packages/logic/src/actions/turn/general/che_전투특기초기화.ts
index 7f5b6ad..f9dbe1c 100644
--- a/packages/logic/src/actions/turn/general/che_전투특기초기화.ts
+++ b/packages/logic/src/actions/turn/general/che_전투특기초기화.ts
@@ -82,7 +82,8 @@ export class ActionDefinition<
         general.meta.prev_types_special2 =
             nextPreviousTypes.length === WAR_TRAIT_KEYS.length ? [general.role.specialWar!] : nextPreviousTypes;
         general.role.specialWar = null;
-        setMetaNumber(general.meta, 'specAge2', general.age + 1);
+        delete general.meta.specAge2;
+        setMetaNumber(general.meta, 'specage2', general.age + 1);
         const specialName = ACTION_NAME.replace(' 초기화', '');
         context.addLog(`새로운 ${specialName}를 가질 준비가 되었습니다.`);
         tryApplyUniqueLottery(context, { acquireType: '아이템', reason: ACTION_NAME });
diff --git a/packages/logic/src/triggers/special/selector.ts b/packages/logic/src/triggers/special/selector.ts
index 39a0199..d9031e9 100644
--- a/packages/logic/src/triggers/special/selector.ts
+++ b/packages/logic/src/triggers/special/selector.ts
@@ -15,7 +15,17 @@ export class TraitSelector {
         const chiefMin = scenarioStat.chiefMin;
 
         let myCond = 0;
-        if (leadership < chiefMin || strength < chiefMin || intelligence < chiefMin) {
+        if (leadership > chiefMin) {
+            myCond |= TraitRequirement.STAT_LEADERSHIP;
+        }
+        if (strength >= intelligence * 0.95 && strength > chiefMin) {
+            myCond |= TraitRequirement.STAT_STRENGTH;
+        }
+        if (intelligence >= strength * 0.95 && intelligence > chiefMin) {
+            myCond |= TraitRequirement.STAT_INTEL;
+        }
+
+        if (myCond !== 0) {
             if (leadership < chiefMin) myCond |= TraitRequirement.STAT_NOT_LEADERSHIP;
             if (strength < chiefMin) myCond |= TraitRequirement.STAT_NOT_STRENGTH;
             if (intelligence < chiefMin) myCond |= TraitRequirement.STAT_NOT_INTEL;
@@ -48,7 +58,7 @@ export class TraitSelector {
 
         const dexSum = Object.values(dexMap).reduce((a, b) => a + b, 0);
         // 루트(합)/4 확률 기반 로직 (Legacy: sqrt(dexSum)/4)
-        const dexProb = Math.sqrt(dexSum) / 4;
+        const dexBase = Math.round(Math.sqrt(dexSum) / 4);
 
         // Legacy: 80% 확률로 0 반환 (이전 연도에 이미 얻었거나 기타 이유로 제한하는 인지)
         // 실제로는 pickSpecialWar에서 이 메서드 호출 전후에 별도 확률을 둘 수도 있으나,
@@ -57,12 +67,12 @@ export class TraitSelector {
             return 0;
         }
 
-        if (rng.nextRangeInt(0, 99) < dexProb) {
+        if (rng.nextRangeInt(0, 99) < dexBase) {
             return 0;
         }
 
         if (dexSum === 0) {
-            return Number(rng.choice(Object.keys(dexMap)));
+            return rng.choice(Object.values(dexMap));
         }
 
         const maxDex = Math.max(...Object.values(dexMap));
@@ -76,42 +86,59 @@ export class TraitSelector {
     /**
      * 사용 가능한 특기 목록에서 하나를 무작위로 선택 (pickTrait)
      */
-    static pickTrait(rng: RandUtil, myCond: number, traits: TraitModule[], prevTraitKeys: string[]): string | null {
-        const normPool: Record<string, number> = {};
-        const percentPool: { key: string; weight: number }[] = [];
+    private static pickTraitOnce(
+        rng: RandUtil,
+        myCond: number,
+        traits: TraitModule[],
+        prevTraitKeys: string[],
+        preferDexterity: boolean
+    ): string | null {
+        const dexterityPool: Array<[string, number]> = [];
+        const normPool: Array<[string, number]> = [];
+        const percentPool: Array<[string | null, number]> = [];
 
         for (const trait of traits) {
             if (!trait.selection) continue;
             if (prevTraitKeys.includes(trait.key)) continue;
 
-            let valid = false;
+            let matchedRequirement: number | null = null;
             for (const req of trait.selection.requirements) {
                 if (req === (req & myCond)) {
-                    valid = true;
+                    matchedRequirement = req;
                     break;
                 }
             }
 
-            if (!valid) continue;
+            if (matchedRequirement === null) continue;
 
-            if (trait.selection.weightType === TraitWeightType.PERCENT) {
-                percentPool.push({ key: trait.key, weight: trait.selection.weight });
+            if (preferDexterity && (matchedRequirement & TraitRequirement.REQ_DEXTERITY) !== 0) {
+                dexterityPool.push([trait.key, trait.selection.weight]);
+            } else if (trait.selection.weightType === TraitWeightType.PERCENT) {
+                percentPool.push([trait.key, trait.selection.weight]);
             } else {
-                normPool[trait.key] = trait.selection.weight;
+                normPool.push([trait.key, trait.selection.weight]);
             }
         }
 
-        // PERCENT 타입 특기 먼저 우선권 확인
-        for (const item of percentPool) {
-            if (rng.nextBool(item.weight / 100)) {
-                return item.key;
+        if (dexterityPool.length > 0) {
+            return rng.choiceUsingWeightPair(dexterityPool);
+        }
+
+        if (percentPool.length > 0) {
+            if (normPool.length > 0) {
+                const totalPercent = percentPool.reduce((sum, [, weight]) => sum + weight, 0);
+                percentPool.push([null, Math.max(0, 100 - totalPercent)]);
+            }
+            const selected = rng.choiceUsingWeightPair(percentPool);
+            if (selected !== null) {
+                return selected;
             }
         }
 
-        // NORM 타입 특기들 중 가중치 기반 선택
-        if (Object.keys(normPool).length === 0) return null;
-
-        return String(rng.choiceUsingWeight(normPool));
+        if (normPool.length > 0) {
+            return rng.choiceUsingWeightPair(normPool);
+        }
+        return null;
     }
 
     /**
@@ -125,13 +152,18 @@ export class TraitSelector {
         prevTraitKeys: string[],
         scenarioStat: ScenarioStatBlock
     ): string | null {
-        let myCond = this.calcCondGeneric(stats, scenarioStat);
-        const dexCond = this.calcCondDexterity(rng, dex);
-        if (dexCond) {
-            myCond |= dexCond | TraitRequirement.REQ_DEXTERITY;
+        const myCond =
+            this.calcCondGeneric(stats, scenarioStat) |
+            this.calcCondDexterity(rng, dex) |
+            TraitRequirement.REQ_DEXTERITY;
+        const selected = this.pickTraitOnce(rng, myCond, traits, prevTraitKeys, true);
+        if (selected !== null) {
+            return selected;
         }
-
-        return this.pickTrait(rng, myCond, traits, prevTraitKeys);
+        if (prevTraitKeys.length > 0) {
+            return this.pickWarTrait(rng, stats, dex, traits, [], scenarioStat);
+        }
+        return null;
     }
 
     /**
@@ -145,6 +177,13 @@ export class TraitSelector {
         scenarioStat: ScenarioStatBlock
     ): string | null {
         const myCond = this.calcCondGeneric(stats, scenarioStat);
-        return this.pickTrait(rng, myCond, traits, prevTraitKeys);
+        const selected = this.pickTraitOnce(rng, myCond, traits, prevTraitKeys, false);
+        if (selected !== null) {
+            return selected;
+        }
+        if (prevTraitKeys.length > 0) {
+            return this.pickDomesticTrait(rng, stats, traits, [], scenarioStat);
+        }
+        return null;
     }
 }
diff --git a/packages/logic/src/world/bootstrap.ts b/packages/logic/src/world/bootstrap.ts
index 0b37bcd..7ef2e92 100644
--- a/packages/logic/src/world/bootstrap.ts
+++ b/packages/logic/src/world/bootstrap.ts
@@ -161,6 +161,9 @@ const resolveAge = (startYear: number | null, birthYear: number): number => {
     return Math.max(startYear - birthYear, 0);
 };
 
+const buildSpecialityAge = (retirementYear: number, age: number, divisor: number): number =>
+    Math.max(Math.round((retirementYear - age) / divisor), 3) + age;
+
 const ADULT_GENERAL_AGE = 14;
 
 type GeneralBootstrapDisposition = 'active' | 'delayed' | 'expired';
@@ -294,6 +297,9 @@ const buildGeneralSeeds = (
 
     const defaultGold = options?.defaultGeneralGold ?? DEFAULT_GENERAL_GOLD;
     const defaultRice = options?.defaultGeneralRice ?? DEFAULT_GENERAL_RICE;
+    const rawRetirementYear = scenario.config.const.retirementYear;
+    const retirementYear =
+        typeof rawRetirementYear === 'number' && Number.isFinite(rawRetirementYear) ? rawRetirementYear : 80;
 
     for (const row of rows) {
         const id = nextId;
@@ -313,6 +319,8 @@ const buildGeneralSeeds = (
 
         const seedMeta: Record<string, unknown> = {
             source: contextLabel,
+            specage: buildSpecialityAge(retirementYear, age, 12),
+            specage2: buildSpecialityAge(retirementYear, age, 6),
         };
         if (row.affinity !== null) {
             seedMeta.affinity = row.affinity;
@@ -374,6 +382,8 @@ const buildGeneralSeeds = (
             killturn: resolveKillturnFromDeathYear(scenario.startYear, 1, deathYear, DEFAULT_GENERAL_KILLTURN),
             npcType,
             crewTypeId: defaultCrewTypeId,
+            specage: buildSpecialityAge(retirementYear, age, 12),
+            specage2: buildSpecialityAge(retirementYear, age, 6),
         };
         addTriggerMeta(generalMeta, 'affinity', row.affinity);
         addTriggerMeta(generalMeta, 'personality', row.personality ?? undefined);
diff --git a/packages/logic/test/specialTraitSelectorParity.test.ts b/packages/logic/test/specialTraitSelectorParity.test.ts
new file mode 100644
index 0000000..2faeff7
--- /dev/null
+++ b/packages/logic/test/specialTraitSelectorParity.test.ts
@@ -0,0 +1,130 @@
+import { describe, expect, it } from 'vitest';
+import { RandUtil, type RNG } from '@sammo-ts/common';
+
+import { TraitRequirement, TraitWeightType } from '../src/triggers/special/requirements.js';
+import { TraitSelector } from '../src/triggers/special/selector.js';
+import type { TraitModule } from '../src/triggers/special/types.js';
+
+class ScriptedRng implements RNG {
+    public floatCalls = 0;
+    public intCalls = 0;
+
+    constructor(
+        private readonly floats: number[],
+        private readonly ints: number[]
+    ) {}
+
+    getMaxInt(): number {
+        return 0x7fff_ffff;
+    }
+
+    nextBytes(bytes: number): Uint8Array<ArrayBuffer> {
+        return new Uint8Array(bytes);
+    }
+
+    nextBits(bits: number): Uint8Array<ArrayBuffer> {
+        return new Uint8Array(Math.ceil(bits / 8));
+    }
+
+    nextInt(max = 0x7fff_ffff): number {
+        const value = this.ints[this.intCalls++] ?? 0;
+        return Math.max(0, Math.min(value, max));
+    }
+
+    nextFloat1(): number {
+        return this.floats[this.floatCalls++] ?? 0;
+    }
+}
+
+const scenarioStat = {
+    total: 300,
+    min: 10,
+    max: 100,
+    npcTotal: 150,
+    npcMax: 75,
+    npcMin: 10,
+    chiefMin: 70,
+};
+
+const trait = (
+    key: string,
+    requirement: TraitRequirement,
+    weightType = TraitWeightType.NORM,
+    weight = 1
+): TraitModule =>
+    ({
+        key,
+        name: key,
+        info: '',
+        kind: 'domestic',
+        selection: { requirements: [requirement], weightType, weight },
+    }) as TraitModule;
+
+describe('legacy speciality selector parity', () => {
+    it('sets positive and negative stat bits in the legacy order', () => {
+        expect(
+            TraitSelector.calcCondGeneric(
+                { leadership: 80, strength: 75, intelligence: 40 },
+                scenarioStat
+            )
+        ).toBe(
+            TraitRequirement.STAT_LEADERSHIP |
+                TraitRequirement.STAT_STRENGTH |
+                TraitRequirement.STAT_NOT_INTEL
+        );
+        expect(
+            TraitSelector.calcCondGeneric(
+                { leadership: 70, strength: 70, intelligence: 70 },
+                scenarioStat
+            )
+        ).toBe(TraitRequirement.STAT_STRENGTH);
+    });
+
+    it('rounds the dex threshold and still consumes a value choice when every dex is zero', () => {
+        const source = new ScriptedRng([0.9], [99, 4]);
+        const result = TraitSelector.calcCondDexterity(new RandUtil(source), [0, 0, 0, 0, 0]);
+        expect(result).toBe(0);
+        expect(source.floatCalls).toBe(1);
+        expect(source.intCalls).toBe(2);
+    });
+
+    it('uses one weighted absolute draw with a relative sentinel before the norm pool', () => {
+        const source = new ScriptedRng([0.5, 0.1], []);
+        const result = TraitSelector.pickDomesticTrait(
+            new RandUtil(source),
+            { leadership: 40, strength: 40, intelligence: 80 },
+            [
+                trait('rare', TraitRequirement.STAT_INTEL, TraitWeightType.PERCENT, 2.5),
+                trait('normal-a', TraitRequirement.STAT_INTEL),
+                trait('normal-b', TraitRequirement.STAT_INTEL),
+            ],
+            [],
+            scenarioStat
+        );
+        expect(result).toBe('normal-a');
+        expect(source.floatCalls).toBe(2);
+    });
+
+    it('retries without previous traits and reruns the war dex RNG path', () => {
+        const source = new ScriptedRng([0.9, 0.9, 0.1], [99, 0, 99, 0]);
+        const result = TraitSelector.pickWarTrait(
+            new RandUtil(source),
+            { leadership: 80, strength: 75, intelligence: 40 },
+            [200, 10, 10, 10, 10],
+            [
+                trait(
+                    'footman',
+                    (TraitRequirement.STAT_LEADERSHIP |
+                        TraitRequirement.REQ_DEXTERITY |
+                        TraitRequirement.ARMY_FOOTMAN |
+                        TraitRequirement.STAT_NOT_INTEL) as TraitRequirement
+                ),
+            ],
+            ['footman'],
+            scenarioStat
+        );
+        expect(result).toBe('footman');
+        expect(source.floatCalls).toBe(3);
+        expect(source.intCalls).toBe(4);
+    });
+});
diff --git a/packages/logic/test/worldBootstrap.test.ts b/packages/logic/test/worldBootstrap.test.ts
index 00d87f8..e47362a 100644
--- a/packages/logic/test/worldBootstrap.test.ts
+++ b/packages/logic/test/worldBootstrap.test.ts
@@ -119,6 +119,8 @@ describe('scenario bootstrap', () => {
         expect(result.snapshot.generals[0]?.crewTypeId).toBe(1200);
         expect(result.snapshot.generals[0]?.role.specialDomestic).toBe('Special');
         expect(result.snapshot.generals[0]?.role.specialWar).toBeNull();
+        expect(result.snapshot.generals[0]?.meta).toMatchObject({ specage: 25, specage2: 30 });
+        expect(result.seed.generals[0]?.meta).toMatchObject({ specage: 25, specage2: 30 });
         expect(result.seed.generals[0]?.npcType).toBe(2);
         expect(result.snapshot.scenarioMeta?.title).toBe('Test Scenario');
     });