diff --git a/server/internal/questflow/handler.go b/server/internal/questflow/handler.go
index b9bcd93..390f7d7 100644
--- a/server/internal/questflow/handler.go
+++ b/server/internal/questflow/handler.go
@@ -59,11 +59,20 @@ func BuildGranter(catalog *masterdata.QuestCatalog) *store.PossessionGranter {
 		}
 		releaseConditions[groupId] = conds
 	}
+	partsById := make(map[int32]store.PartsRef, len(catalog.PartsById))
+	for id, p := range catalog.PartsById {
+		partsById[id] = store.PartsRef{
+			PartsGroupId:                  p.PartsGroupId,
+			PartsStatusMainLotteryGroupId: p.PartsStatusMainLotteryGroupId,
+		}
+	}
 	return &store.PossessionGranter{
-		CostumeById:        costumeById,
-		WeaponById:         weaponById,
-		WeaponSkillSlots:   catalog.WeaponSkillSlots,
-		WeaponAbilitySlots: catalog.WeaponAbilitySlots,
-		ReleaseConditions:  releaseConditions,
+		CostumeById:                          costumeById,
+		WeaponById:                           weaponById,
+		WeaponSkillSlots:                     catalog.WeaponSkillSlots,
+		WeaponAbilitySlots:                   catalog.WeaponAbilitySlots,
+		ReleaseConditions:                    releaseConditions,
+		PartsById:                            partsById,
+		DefaultPartsStatusMainByLotteryGroup: catalog.DefaultPartsStatusMainByLotteryGroup,
 	}
 }
diff --git a/server/internal/questflow/rewards.go b/server/internal/questflow/rewards.go
index 2fd762c..7a70bba 100644
--- a/server/internal/questflow/rewards.go
+++ b/server/internal/questflow/rewards.go
@@ -4,8 +4,6 @@ import (
 	"fmt"
 	"log"
 
-	"github.com/google/uuid"
-
 	"lunar-tear/server/internal/gameutil"
 	"lunar-tear/server/internal/masterdata"
 	"lunar-tear/server/internal/model"
@@ -262,54 +260,7 @@ func (h *QuestHandler) applyQuestRewards(user *store.UserState, questId int32, n
 }
 
 func (h *QuestHandler) applyRewardPossession(user *store.UserState, possType model.PossessionType, possId, count int32, nowMillis int64) {
-	switch possType {
-	case model.PossessionTypeCompanion:
-		h.grantCompanion(user, possId, nowMillis)
-	case model.PossessionTypeParts:
-		h.grantParts(user, possId, nowMillis)
-	default:
-		h.Granter.GrantFull(user, possType, possId, count, nowMillis)
-	}
-}
-
-func (h *QuestHandler) grantCompanion(user *store.UserState, companionId int32, nowMillis int64) {
-	for _, row := range user.Companions {
-		if row.CompanionId == companionId {
-			return
-		}
-	}
-	key := uuid.New().String()
-	user.Companions[key] = store.CompanionState{
-		UserCompanionUuid:   key,
-		CompanionId:         companionId,
-		Level:               1,
-		HeadupDisplayViewId: 1,
-		AcquisitionDatetime: nowMillis,
-	}
-}
-
-func (h *QuestHandler) grantParts(user *store.UserState, partsId int32, nowMillis int64) {
-	var mainStatId int32
-	if partsDef, ok := h.PartsById[partsId]; ok {
-		mainStatId = h.DefaultPartsStatusMainByLotteryGroup[partsDef.PartsStatusMainLotteryGroupId]
-
-		if _, exists := user.PartsGroupNotes[partsDef.PartsGroupId]; !exists {
-			user.PartsGroupNotes[partsDef.PartsGroupId] = store.PartsGroupNoteState{
-				PartsGroupId:             partsDef.PartsGroupId,
-				FirstAcquisitionDatetime: nowMillis,
-				LatestVersion:            nowMillis,
-			}
-		}
-	}
-
-	key := uuid.New().String()
-	user.Parts[key] = store.PartsState{
-		UserPartsUuid:       key,
-		PartsId:             partsId,
-		Level:               1,
-		PartsStatusMainId:   mainStatId,
-		AcquisitionDatetime: nowMillis,
-	}
+	h.Granter.GrantFull(user, possType, possId, count, nowMillis)
 }
 
 func (h *QuestHandler) grantWeaponStoryUnlock(user *store.UserState, weaponId, storyIndex int32, nowMillis int64) bool {
@@ -338,7 +289,7 @@ func (h *QuestHandler) applyCompanionTutorialReward(user *store.UserState, choic
 		log.Printf("[QuestHandler] unknown companion tutorial choiceId=%d", choiceId)
 		return nil
 	}
-	h.grantCompanion(user, companionId, nowMillis)
+	h.Granter.GrantCompanion(user, companionId, nowMillis)
 	return []RewardGrant{{
 		PossessionType: model.PossessionTypeCompanion,
 		PossessionId:   companionId,
diff --git a/server/internal/store/helpers.go b/server/internal/store/helpers.go
index eb49abf..95a1a64 100644
--- a/server/internal/store/helpers.go
+++ b/server/internal/store/helpers.go
@@ -100,6 +100,11 @@ type WeaponStoryReleaseCond struct {
 	ConditionValue                  int32
 }
 
+type PartsRef struct {
+	PartsGroupId                  int32
+	PartsStatusMainLotteryGroupId int32
+}
+
 type PossessionGranter struct {
 	CostumeById        map[int32]CostumeRef
 	WeaponById         map[int32]WeaponRef
@@ -107,6 +112,9 @@ type PossessionGranter struct {
 	WeaponAbilitySlots map[int32][]int32
 	ReleaseConditions  map[int32][]WeaponStoryReleaseCond
 
+	PartsById                            map[int32]PartsRef
+	DefaultPartsStatusMainByLotteryGroup map[int32]int32
+
 	LastChangedStoryWeaponIds []int32
 }
 
@@ -122,6 +130,10 @@ func (g *PossessionGranter) GrantFull(user *UserState, possessionType model.Poss
 		g.GrantCostume(user, possessionId, nowMillis)
 	case model.PossessionTypeWeapon, model.PossessionTypeWeaponEnhanced:
 		g.GrantWeapon(user, possessionId, nowMillis)
+	case model.PossessionTypeCompanion, model.PossessionTypeCompanionEnhanced:
+		g.GrantCompanion(user, possessionId, nowMillis)
+	case model.PossessionTypeParts, model.PossessionTypePartsEnhanced:
+		g.GrantParts(user, possessionId, nowMillis)
 	default:
 		GrantPossession(user, possessionType, possessionId, count)
 	}
@@ -156,6 +168,44 @@ func (g *PossessionGranter) GrantCostume(user *UserState, costumeId int32, nowMi
 	}
 }
 
+func (g *PossessionGranter) GrantCompanion(user *UserState, companionId int32, nowMillis int64) {
+	for _, row := range user.Companions {
+		if row.CompanionId == companionId {
+			return
+		}
+	}
+	key := uuid.New().String()
+	user.Companions[key] = CompanionState{
+		UserCompanionUuid:   key,
+		CompanionId:         companionId,
+		Level:               1,
+		HeadupDisplayViewId: 1,
+		AcquisitionDatetime: nowMillis,
+	}
+}
+
+func (g *PossessionGranter) GrantParts(user *UserState, partsId int32, nowMillis int64) {
+	var mainStatId int32
+	if ref, ok := g.PartsById[partsId]; ok {
+		mainStatId = g.DefaultPartsStatusMainByLotteryGroup[ref.PartsStatusMainLotteryGroupId]
+		if _, exists := user.PartsGroupNotes[ref.PartsGroupId]; !exists {
+			user.PartsGroupNotes[ref.PartsGroupId] = PartsGroupNoteState{
+				PartsGroupId:             ref.PartsGroupId,
+				FirstAcquisitionDatetime: nowMillis,
+				LatestVersion:            nowMillis,
+			}
+		}
+	}
+	key := uuid.New().String()
+	user.Parts[key] = PartsState{
+		UserPartsUuid:       key,
+		PartsId:             partsId,
+		Level:               1,
+		PartsStatusMainId:   mainStatId,
+		AcquisitionDatetime: nowMillis,
+	}
+}
+
 func (g *PossessionGranter) GrantWeapon(user *UserState, weaponId int32, nowMillis int64) {
 	key := uuid.New().String()
 	user.Weapons[key] = WeaponState{