diff --git a/src/main/java/icu/samnyan/aqua/sega/chusan/model/Chu3GameData.kt b/src/main/java/icu/samnyan/aqua/sega/chusan/model/Chu3GameData.kt
index ba9125c6..54ab772c 100644
--- a/src/main/java/icu/samnyan/aqua/sega/chusan/model/Chu3GameData.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/chusan/model/Chu3GameData.kt
@@ -2,47 +2,30 @@ package icu.samnyan.aqua.sega.chusan.model
 
 import com.fasterxml.jackson.annotation.JsonIgnore
 import com.fasterxml.jackson.annotation.JsonProperty
-import icu.samnyan.aqua.net.games.BaseEntity
-import jakarta.persistence.*
 import java.time.LocalDateTime
 
-
-// BaseEntity does not expose id to json, but IdExposedEntity does
-@MappedSuperclass
-class IdExposedEntity {
-    @Id
-    var id: Long = 0
-}
-
-@Entity(name = "ChusanGameCharge")
-@Table(name = "chusan_game_charge")
-class GameCharge: BaseEntity() {
+class GameCharge {
     var orderId = 0
-
-    @Column(unique = true)
     var chargeId = 0
     var price = 0
-    var startDate: LocalDateTime? = null
-    var endDate: LocalDateTime? = null
+    var startDate: LocalDateTime? = LocalDateTime.of(2019, 1, 1, 0, 0, 0)
+    var endDate: LocalDateTime? = LocalDateTime.of(2099, 1, 1, 0, 0, 0)
     var salePrice = 0
-    var saleStartDate: LocalDateTime? = null
-    var saleEndDate: LocalDateTime? = null
+    var saleStartDate: LocalDateTime? = LocalDateTime.of(2019, 1, 1, 0, 0, 0)
+    var saleEndDate: LocalDateTime? = LocalDateTime.of(2099, 1, 1, 0, 0, 0)
 }
 
-@Entity(name = "ChusanGameEvent")
-@Table(name = "chusan_game_event")
-class GameEvent: IdExposedEntity() {
+class GameEvent {
+    var id: Long = 0
     val type = 0
-    val startDate: LocalDateTime? = null
-    val endDate: LocalDateTime? = null
+    val startDate: LocalDateTime? = LocalDateTime.of(2019, 1, 1, 0, 0, 0)
+    val endDate: LocalDateTime? = LocalDateTime.of(2099, 1, 1, 0, 0, 0)
 
     @JsonIgnore
     val enable = false
 }
 
-@Entity(name = "ChusanGameGacha")
-@Table(name = "chusan_game_gacha")
-class GameGacha : IdExposedEntity() {
+class GameGacha {
     var gachaId = 0
     var gachaName: String? = null
     var type = 0
@@ -53,15 +36,14 @@ class GameGacha : IdExposedEntity() {
     var ceilingCnt = 0
     var changeRateCnt1 = 0
     var changeRateCnt2 = 0
-    var startDate: LocalDateTime? = null
-    var endDate: LocalDateTime? = null
-    var noticeStartDate: LocalDateTime? = null
-    var noticeEndDate: LocalDateTime? = null
+    var startDate: LocalDateTime? = LocalDateTime.of(2019, 1, 1, 0, 0, 0)
+    var endDate: LocalDateTime? = LocalDateTime.of(2099, 1, 1, 0, 0, 0)
+    var noticeStartDate: LocalDateTime? = LocalDateTime.of(2019, 1, 1, 0, 0, 0)
+    var noticeEndDate: LocalDateTime? = LocalDateTime.of(2099, 1, 1, 0, 0, 0)
 }
 
-@Entity(name = "ChusanGameGachaCard")
-@Table(name = "chusan_game_gacha_card")
-class GameGachaCard : IdExposedEntity() {
+class GameGachaCard {
+    var id: Long = 0
     var gachaId = 0
     var cardId = 0
     var rarity = 0
@@ -71,9 +53,8 @@ class GameGachaCard : IdExposedEntity() {
     var isPickup = false
 }
 
-@Entity(name = "ChusanGameLoginBonus")
-@Table(name = "chusan_game_login_bonus")
-class GameLoginBonus : IdExposedEntity() {
+class GameLoginBonus {
+    var id: Long = 0
     var version = 0
     var presetId = 0
     var loginBonusId = 0
@@ -85,19 +66,17 @@ class GameLoginBonus : IdExposedEntity() {
     var loginBonusCategoryType = 0
 }
 
-@Entity(name = "ChusanGameLoginBonusPreset")
-@Table(name = "chusan_game_login_bonus_preset")
-class GameLoginBonusPreset : IdExposedEntity() {
+class GameLoginBonusPreset {
+    var id: Long = 0
     var version = 0
     var presetName: String? = null
     var isEnabled = false
 }
 
-@Entity(name = "ChusanGameLinkedVerse")
-@Table(name = "chusan_game_linked_verse")
-class GameLinkedVerse: IdExposedEntity() {
+class GameLinkedVerse {
+    var id: Long = 0
     var musicId = 0
     var name: String? = null
-    var startDate: LocalDateTime? = null
-    var endDate: LocalDateTime? = null
+    var startDate: LocalDateTime? = LocalDateTime.of(2019, 1, 1, 0, 0, 0)
+    var endDate: LocalDateTime? = LocalDateTime.of(2099, 1, 1, 0, 0, 0)
 }
\ No newline at end of file
diff --git a/src/main/java/icu/samnyan/aqua/sega/chusan/model/Chu3Repos.kt b/src/main/java/icu/samnyan/aqua/sega/chusan/model/Chu3Repos.kt
index 0c6edc4e..c479e7b5 100644
--- a/src/main/java/icu/samnyan/aqua/sega/chusan/model/Chu3Repos.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/chusan/model/Chu3Repos.kt
@@ -13,7 +13,8 @@ import org.springframework.data.jpa.repository.JpaRepository
 import org.springframework.data.jpa.repository.Query
 import org.springframework.data.repository.NoRepositoryBean
 import org.springframework.stereotype.Component
-import java.util.*
+import icu.samnyan.aqua.sega.util.GameDataService
+import icu.samnyan.aqua.sega.util.StaticRepo
 
 
 @NoRepositoryBean
@@ -147,44 +148,23 @@ interface Chu3UserChallengeRepo : Chu3UserLinked<Chu3UserChallenge> {
     fun findByUserAndUnlockChallengeId(user: Chu3UserData, unlockChallengeId: Int): Chu3UserChallenge?
 }
 
-interface Chu3GameChargeRepo : JpaRepository<GameCharge, Long>
-
-interface Chu3GameEventRepo : JpaRepository<GameEvent, Int> {
-    fun findByEnable(enable: Boolean): List<GameEvent>
-}
-
-interface Chu3GameGachaCardRepo : JpaRepository<GameGachaCard, Long> {
-    fun findAllByGachaId(gachaId: Int): List<GameGachaCard>
-}
-
-interface Chu3GameGachaRepo : JpaRepository<GameGacha, Long>
-
-interface Chu3GameLoginBonusPresetsRepo : JpaRepository<GameLoginBonusPreset, Long> {
-    @Query(
-        value = "select * from chusan_game_login_bonus_preset where version = ?1 and is_enabled = ?2",
-        nativeQuery = true
-    )
-    fun findLoginBonusPresets(version: Int, isEnabled: Int): List<GameLoginBonusPreset>
-}
-
-interface Chu3GameLoginBonusRepo : JpaRepository<GameLoginBonus, Int> {
-    @Query(
-        value = "select * from chusan_game_login_bonus where version = ?1 and preset_id = ?2 order by need_login_day_count desc",
-        nativeQuery = true
-    )
-    fun findGameLoginBonus(version: Int, presetId: Int): List<GameLoginBonus>
-
-    @Query(
-        value = "select * from chusan_game_login_bonus where version = ?1 and preset_id = ?2 and need_login_day_count = ?3 limit 1",
-        nativeQuery = true
-    )
-    fun findByRequiredDays(version: Int, presetId: Int, requiredDays: Int): GameLoginBonus?
-}
-
 interface Chu3UserRegionsRepo: Chu3UserLinked<UserRegions> {
     fun findByUserAndRegionId(user: Chu3UserData, regionId: Int): UserRegions?
 }
 
+class Chu3GameGachaCardRepo(data: List<GameGachaCard>) : StaticRepo<GameGachaCard, Long>(data, { it.id }) {
+    fun findAllByGachaId(gachaId: Int) = data.filter { it.gachaId == gachaId }
+}
+
+class Chu3GameLoginBonusPresetsRepo(data: List<GameLoginBonusPreset>) : StaticRepo<GameLoginBonusPreset, Long>(data, { it.id }) {
+    fun findLoginBonusPresets(version: Int, isEnabled: Int) = data.filter { it.version == version && it.isEnabled == (isEnabled == 1) }
+}
+
+class Chu3GameLoginBonusRepo(data: List<GameLoginBonus>) : StaticRepo<GameLoginBonus, Long>(data, { it.id }) {
+    fun findGameLoginBonus(version: Int, presetId: Int) = data.filter { it.version == version && it.presetId == presetId }.sortedByDescending { it.needLoginDayCount }
+    fun findByRequiredDays(version: Int, presetId: Int, requiredDays: Int) = data.find { it.version == version && it.presetId == presetId && it.needLoginDayCount == requiredDays }
+}
+
 @Component
 class Chu3Repos(
     val userLoginBonus: Chu3UserLoginBonusRepo,
@@ -209,11 +189,13 @@ class Chu3Repos(
     val userMisc: Chu3UserMiscRepo,
     val userChallenge: Chu3UserChallengeRepo,
     val userLinkedVerse: Chu3UserLinkedVerseRepo,
-    val gameCharge: Chu3GameChargeRepo,
-    val gameEvent: Chu3GameEventRepo,
-    val gameGachaCard: Chu3GameGachaCardRepo,
-    val gameGacha: Chu3GameGachaRepo,
-    val gameLoginBonusPresets: Chu3GameLoginBonusPresetsRepo,
-    val gameLoginBonus: Chu3GameLoginBonusRepo,
-    val gameLinkedVerse: Chu3GameLinkedVerseRepo
-)
\ No newline at end of file
+    val gameData: GameDataService
+) {
+    val gameCharge = StaticRepo(gameData.chu3GameCharges) { it.orderId.toLong() }
+    val gameEvent = StaticRepo(gameData.chu3GameEvents) { it.id }
+    val gameGachaCard = Chu3GameGachaCardRepo(gameData.chu3GameGachaCards)
+    val gameGacha = StaticRepo(gameData.chu3GameGachas) { it.gachaId.toLong() }
+    val gameLoginBonusPresets = Chu3GameLoginBonusPresetsRepo(gameData.chu3GameLoginBonusPresets)
+    val gameLoginBonus = Chu3GameLoginBonusRepo(gameData.chu3GameLoginBonuses)
+    val gameLinkedVerse = StaticRepo(gameData.chu3GameLinkedVerses) { it.id }
+}
diff --git a/src/main/java/icu/samnyan/aqua/sega/maimai2/model/GameDataEntities.kt b/src/main/java/icu/samnyan/aqua/sega/maimai2/model/GameDataEntities.kt
index ea990114..984b6926 100644
--- a/src/main/java/icu/samnyan/aqua/sega/maimai2/model/GameDataEntities.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/maimai2/model/GameDataEntities.kt
@@ -1,43 +1,32 @@
 package icu.samnyan.aqua.sega.maimai2.model
 
 import com.fasterxml.jackson.annotation.JsonIgnore
-import icu.samnyan.aqua.net.games.BaseEntity
-import jakarta.persistence.Column
-import jakarta.persistence.Entity
-import jakarta.persistence.Table
 
-@Entity
-@Table(name = "maimai2_game_event")
-class Mai2GameEvent : BaseEntity() {
+class Mai2GameEvent {
     @JsonIgnore(false)
-    override var id = 0L
+    var id = 0L
 
     var type = 0
-    var startDate: String? = null
-    var endDate: String? = null
+    var startDate: String? = "2019-01-01 00:00:00.000000"
+    var endDate: String? = "2099-01-01 00:00:00.000000"
 
     @JsonIgnore
     var enable = false
     var disableArea = ""
 }
 
-@Entity
-@Table(name = "maimai2_game_charge")
-class Mai2GameCharge : BaseEntity() {
-    @Column(unique = true)
+class Mai2GameCharge {
     var chargeId = 0L
-    val orderId = 0L
-    val price = 0
-    val startDate: String? = null
-    val endDate: String? = null
+    var orderId = 0L
+    var price = 0
+    var startDate: String? = "2019-01-01 00:00:00.000000"
+    var endDate: String? = "2099-01-01 00:00:00.000000"
 }
 
-@Entity
-@Table(name = "maimai2_game_selling_card")
-class Mai2GameSellingCard : BaseEntity() {
+class Mai2GameSellingCard {
     var cardId = 0L
-    var startDate: String? = null
-    var endDate: String? = null
-    var noticeStartDate: String? = null
-    var noticeEndDate: String? = null
+    var startDate: String? = "2019-01-01 00:00:00.000000"
+    var endDate: String? = "2099-01-01 00:00:00.000000"
+    var noticeStartDate: String? = "2019-01-01 00:00:00.000000"
+    var noticeEndDate: String? = "2099-01-01 00:00:00.000000"
 }
diff --git a/src/main/java/icu/samnyan/aqua/sega/maimai2/model/Repos.kt b/src/main/java/icu/samnyan/aqua/sega/maimai2/model/Repos.kt
index ed62a0a0..7f6fb1f3 100644
--- a/src/main/java/icu/samnyan/aqua/sega/maimai2/model/Repos.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/maimai2/model/Repos.kt
@@ -15,6 +15,8 @@ import org.springframework.data.jpa.repository.Modifying
 import org.springframework.data.repository.NoRepositoryBean
 import org.springframework.stereotype.Component
 import org.springframework.transaction.annotation.Transactional
+import icu.samnyan.aqua.sega.util.GameDataService
+import icu.samnyan.aqua.sega.util.StaticRepo
 import java.util.*
 
 @NoRepositoryBean
@@ -117,14 +119,6 @@ interface MAi2UserIntimateRepo : Mai2UserLinked<Mai2UserIntimate> {
     fun findByUserAndPartnerId(user: Mai2UserDetail, partnerId: Int): Mai2UserIntimate?
 }
 
-interface Mai2GameChargeRepo : JpaRepository<Mai2GameCharge, Long>
-
-interface Mai2GameEventRepo : JpaRepository<Mai2GameEvent, Int> {
-    fun findByEnable(enable: Boolean): List<Mai2GameEvent>
-}
-
-interface Mai2GameSellingCardRepo : JpaRepository<Mai2GameSellingCard, Long>
-
 interface Mai2UserRegionsRepo: Mai2UserLinked<UserRegions> {
     fun findByUserAndRegionId(user: Mai2UserDetail, regionId: Int): UserRegions?
 }
@@ -152,8 +146,10 @@ class Mai2Repos(
     val userUdemae: Mai2UserUdemaeRepo,
     val userKaleidx: MAi2UserKaleidxRepo,
     val userIntimate: MAi2UserIntimateRepo,
-    val gameCharge: Mai2GameChargeRepo,
-    val gameEvent: Mai2GameEventRepo,
-    val gameSellingCard: Mai2GameSellingCardRepo,
     val userRegions: Mai2UserRegionsRepo,
-)
+    gameData: GameDataService
+) {
+    val gameCharge = StaticRepo(gameData.mai2Charges) { it.orderId }
+    val gameEvent = StaticRepo(gameData.mai2Events) { it.id }
+    val gameSellingCard = StaticRepo(gameData.mai2SellingCards) { it.cardId }
+}
diff --git a/src/main/java/icu/samnyan/aqua/sega/ongeki/OngekiRepos.kt b/src/main/java/icu/samnyan/aqua/sega/ongeki/OngekiRepos.kt
index a30403e2..97202479 100644
--- a/src/main/java/icu/samnyan/aqua/sega/ongeki/OngekiRepos.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/ongeki/OngekiRepos.kt
@@ -12,6 +12,8 @@ import org.springframework.data.jpa.repository.JpaRepository
 import org.springframework.data.jpa.repository.Query
 import org.springframework.data.repository.NoRepositoryBean
 import org.springframework.stereotype.Component
+import icu.samnyan.aqua.sega.util.GameDataService
+import icu.samnyan.aqua.sega.util.StaticRepo
 import java.util.*
 
 
@@ -149,15 +151,12 @@ interface OgkUserRegionsRepo: OngekiUserLinked<UserRegions> {
     fun findByUserAndRegionId(user: UserData, regionId: Int): UserRegions?
 }
 
-interface OgkGameGachaCardRepo : JpaRepository<GameGachaCard, Long> {
-    fun findAllByGachaId(gachaId: Long): List<GameGachaCard>
-
-    @Query("SELECT g FROM OngekiGameGachaCard g WHERE g.gachaId = :gachaId OR g.gachaId = 1112")
-    fun findAllByGachaIdAndPermanent(gachaId: Long): List<GameGachaCard>
+class OngekiGameGachaCardRepo(data: List<GameGachaCard>) : StaticRepo<GameGachaCard, Long>(data, { it.cardId }) {
+    private val gachaMap by lazy { data.groupBy { it.gachaId } }
+    fun findAllByGachaId(gachaId: Long) = gachaMap[gachaId] ?: emptyList()
+    fun findAllByGachaIdAndPermanent(gachaId: Long) = (gachaMap[gachaId] ?: emptyList()) + (gachaMap[1112L] ?: emptyList())
 }
 
-interface OgkGameGachaRepo : JpaRepository<GameGacha, Long>
-
 interface OgkUserGachaRepo : OngekiUserLinked<UserGacha> {
     fun findByUserAndGachaId(user: UserData, gachaId: Long): UserGacha?
 }
@@ -166,14 +165,6 @@ interface OgkUserGachaRepo : OngekiUserLinked<UserGacha> {
 interface OgkUserEventMapRepo : OngekiUserLinked<UserEventMap>
 interface OgkUserSkinRepo : OngekiUserLinked<UserSkin>
 
-interface OgkGameCardRepo : JpaRepository<GameCard, Long>
-interface OgkGameCharaRepo : JpaRepository<GameChara, Long>
-interface OgkGameEventRepo : JpaRepository<GameEvent, Long>
-interface OgkGameMusicRepo : JpaRepository<GameMusic, Long>
-interface OgkGamePointRepo : JpaRepository<GamePoint, Long>
-interface OgkGamePresentRepo : JpaRepository<GamePresent, Long>
-interface OgkGameRewardRepo : JpaRepository<GameReward, Long>
-interface OgkGameSkillRepo : JpaRepository<GameSkill, Long>
 
 @Component
 class OngekiUserRepos(
@@ -211,17 +202,19 @@ class OngekiUserRepos(
 
 @Component
 class OngekiGameRepos(
-    val card: OgkGameCardRepo,
-    val chara: OgkGameCharaRepo,
-    val event: OgkGameEventRepo,
-    val music: OgkGameMusicRepo,
-    val point: OgkGamePointRepo,
-    val present: OgkGamePresentRepo,
-    val reward: OgkGameRewardRepo,
-    val skill: OgkGameSkillRepo,
-    val gachaCard: OgkGameGachaCardRepo,
-    val gacha:OgkGameGachaRepo
-)
+    val gameData: GameDataService
+) {
+    val card = StaticRepo(gameData.ogkGameCards) { it.cardId }
+    val chara = StaticRepo(gameData.ogkGameCharas) { it.modelId }
+    val event = StaticRepo(gameData.ogkGameEvents) { it.id }
+    val music = StaticRepo(gameData.ogkGameMusics) { it.id }
+    val point = StaticRepo(gameData.ogkGamePoints) { it.id }
+    val present = StaticRepo(gameData.ogkGamePresents) { it.id }
+    val reward = StaticRepo(gameData.ogkGameRewards) { it.id }
+    val skill = StaticRepo(gameData.ogkGameSkills) { it.id }
+    val gachaCard = OngekiGameGachaCardRepo(gameData.ogkGameGachaCards)
+    val gacha = StaticRepo(gameData.ogkGameGachas) { it.gachaId }
+}
 
 @Component
 class OngekiRepos(
diff --git a/src/main/java/icu/samnyan/aqua/sega/ongeki/model/OngekiGameEntities.kt b/src/main/java/icu/samnyan/aqua/sega/ongeki/model/OngekiGameEntities.kt
index 6587d5fe..47c50725 100644
--- a/src/main/java/icu/samnyan/aqua/sega/ongeki/model/OngekiGameEntities.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/ongeki/model/OngekiGameEntities.kt
@@ -1,14 +1,9 @@
 package icu.samnyan.aqua.sega.ongeki.model
 
-import com.fasterxml.jackson.annotation.JsonIgnore
 import com.fasterxml.jackson.annotation.JsonProperty
-import jakarta.persistence.*
 
-@Entity(name = "OngekiGameCard")
-@Table(name = "ongeki_game_card")
 class GameCard {
-    @Id
-    var id: Long = 0
+    var cardId: Long = 0
     var name: String = ""
     var nickName: String = ""
     var attribute: String = ""
@@ -24,30 +19,17 @@ class GameCard {
     var version: String = ""
 }
 
-
-@Entity(name = "OngekiGameChara")
-@Table(name = "ongeki_game_chara")
 class GameChara {
-    @Id
-    var id: Long = 0
     var name: String = ""
     var cv: String = ""
     var modelId = 0
 }
 
-
-@Entity(name = "OngekiGameEvent")
-@Table(name = "ongeki_game_event")
 class GameEvent {
-    @Id
     var id: Long = 0
 }
 
-
-@Entity(name = "OngekiGameMusic")
-@Table(name = "ongeki_game_music")
 class GameMusic {
-    @Id
     var id: Long = 0
     var name: String = ""
     var sortName: String = ""
@@ -62,26 +44,15 @@ class GameMusic {
     var level4: String = ""
 }
 
-
-@Entity(name = "OngekiGamePoint")
-@Table(name = "ongeki_game_point", uniqueConstraints = [UniqueConstraint(columnNames = ["type"])])
 class GamePoint {
-    @Id
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
-    @JsonIgnore
     var id: Long = 0
-    @Enumerated(EnumType.ORDINAL)
     var type: OgkGpProductID = OgkGpProductID.A_Credit1
     var cost: Int = 0
     val startDate = "2000-01-01 05:00:00.0"
     val endDate = "2099-01-01 05:00:00.0"
 }
 
-
-@Entity(name = "OngekiGamePresent")
-@Table(name = "ongeki_game_present")
 class GamePresent {
-    @Id
     var id: Long = 0
     var presentName: String = ""
     var rewardId: Int = 0 // count
@@ -91,33 +62,20 @@ class GamePresent {
     val endDate = "2099-01-01 05:00:00.0"
 }
 
-
-@Entity(name = "OngekiGameReward")
-@Table(name = "ongeki_game_reward")
 class GameReward {
-    @Id
     var id: Long = 0
-
-    @Enumerated(EnumType.ORDINAL)
     var itemKind: OgkItemType = OgkItemType.None
     var itemId = 0
 }
 
-
-@Entity(name = "OngekiGameSkill")
-@Table(name = "ongeki_game_skill")
 class GameSkill {
-    @Id
     var id: Long = 0
     var name: String = ""
     var category: String = ""
     var info: String = ""
 }
 
-@Entity(name = "OngekiGameGachaCard")
-@Table(name = "ongeki_game_gacha_card")
 class GameGachaCard {
-    @Id
     var cardId: Long = 0
     var gachaId: Long = 0
     var rarity: Int = 0
@@ -130,10 +88,7 @@ class GameGachaCard {
     var isSelect: Boolean = false
 }
 
-@Entity(name = "OngekiGameGacha")
-@Table(name = "ongeki_game_gacha")
 class GameGacha {
-    @Id
     var gachaId: Long = 0
     var gachaName: String = ""
     var type: Int = 0
@@ -142,11 +97,11 @@ class GameGacha {
     var ceilingCnt: Int = 0
     var changeRateCnt1: Int = 0
     var changeRateCnt2: Int = 0
-    var startDate: String = ""
-    var endDate: String = ""
-    var noticeStartDate: String = ""
-    var noticeEndDate: String = ""
-    var convertEndDate: String = ""
+    var startDate: String = "2020-01-01 00:00:00"
+    var endDate: String = "2099-01-01 00:00:00"
+    var noticeStartDate: String = "2020-01-01 00:00:00"
+    var noticeEndDate: String = "2099-01-01 00:00:00"
+    var convertEndDate: String = "2099-01-01 00:00:00"
 
     @JsonProperty("isCeiling")
     var isCeiling: Boolean = false
diff --git a/src/main/java/icu/samnyan/aqua/sega/util/GameDataService.kt b/src/main/java/icu/samnyan/aqua/sega/util/GameDataService.kt
new file mode 100644
index 00000000..b2322465
--- /dev/null
+++ b/src/main/java/icu/samnyan/aqua/sega/util/GameDataService.kt
@@ -0,0 +1,114 @@
+package icu.samnyan.aqua.sega.util
+
+import com.fasterxml.jackson.core.type.TypeReference
+import ext.logger
+import ext.toJson
+import icu.samnyan.aqua.sega.chusan.model.GameCharge as Chu3GameCharge
+import icu.samnyan.aqua.sega.chusan.model.GameEvent as Chu3GameEvent
+import icu.samnyan.aqua.sega.chusan.model.GameGacha as Chu3GameGacha
+import icu.samnyan.aqua.sega.chusan.model.GameGachaCard as Chu3GameGachaCard
+import icu.samnyan.aqua.sega.chusan.model.GameLinkedVerse as Chu3GameLinkedVerse
+import icu.samnyan.aqua.sega.chusan.model.GameLoginBonus as Chu3GameLoginBonus
+import icu.samnyan.aqua.sega.chusan.model.GameLoginBonusPreset as Chu3GameLoginBonusPreset
+import icu.samnyan.aqua.sega.maimai2.model.Mai2GameCharge
+import icu.samnyan.aqua.sega.maimai2.model.Mai2GameEvent
+import icu.samnyan.aqua.sega.maimai2.model.Mai2GameSellingCard
+import icu.samnyan.aqua.sega.ongeki.model.GameCard as OgkGameCard
+import icu.samnyan.aqua.sega.ongeki.model.GameChara as OgkGameChara
+import icu.samnyan.aqua.sega.ongeki.model.GameEvent as OgkGameEvent
+import icu.samnyan.aqua.sega.ongeki.model.GameGacha as OgkGameGacha
+import icu.samnyan.aqua.sega.ongeki.model.GameGachaCard as OgkGameGachaCard
+import icu.samnyan.aqua.sega.ongeki.model.GameMusic as OgkGameMusic
+import icu.samnyan.aqua.sega.ongeki.model.GamePoint as OgkGamePoint
+import icu.samnyan.aqua.sega.ongeki.model.GamePresent as OgkGamePresent
+import icu.samnyan.aqua.sega.ongeki.model.GameReward as OgkGameReward
+import icu.samnyan.aqua.sega.ongeki.model.GameSkill as OgkGameSkill
+import org.slf4j.LoggerFactory
+import org.springframework.stereotype.Service
+import java.io.File
+
+@Service
+class GameDataService() {
+    companion object {
+        val log = logger()
+        val mapper = BasicMapper()
+
+        inline fun <reified T> load(game: String, file: String): List<T> {
+            val f = File("data/game/$game/$file")
+            if (f.exists()) return mapper.read(f.readText(), object : TypeReference<List<T>>() {})
+
+            // Try load from resources
+            val resPath = "/data/game/$game/$file"
+            val resStream = GameDataService::class.java.getResourceAsStream(resPath)
+            if (resStream != null) {
+                log.info("Loading game data from internal resources: $resPath")
+                return mapper.read(resStream.bufferedReader().use { it.readText() }, object : TypeReference<List<T>>() {})
+            }
+
+            log.warn("Game data file $f or resource $resPath not found, using empty list")
+            return emptyList()
+        }
+    }
+
+    // maimai2
+    lateinit var mai2Events: List<Mai2GameEvent>
+    lateinit var mai2Charges: List<Mai2GameCharge>
+    lateinit var mai2SellingCards: List<Mai2GameSellingCard>
+
+    // chusan
+    lateinit var chu3GameLinkedVerses: List<Chu3GameLinkedVerse>
+    lateinit var chu3GameCharges: List<Chu3GameCharge>
+    lateinit var chu3GameEvents: List<Chu3GameEvent>
+    lateinit var chu3GameGachaCards: List<Chu3GameGachaCard>
+    lateinit var chu3GameGachas: List<Chu3GameGacha>
+    lateinit var chu3GameLoginBonusPresets: List<Chu3GameLoginBonusPreset>
+    lateinit var chu3GameLoginBonuses: List<Chu3GameLoginBonus>
+
+    // ongeki
+    lateinit var ogkGameCards: List<OgkGameCard>
+    lateinit var ogkGameCharas: List<OgkGameChara>
+    lateinit var ogkGameEvents: List<OgkGameEvent>
+    lateinit var ogkGameMusics: List<OgkGameMusic>
+    lateinit var ogkGamePoints: List<OgkGamePoint>
+    lateinit var ogkGamePresents: List<OgkGamePresent>
+    lateinit var ogkGameRewards: List<OgkGameReward>
+    lateinit var ogkGameSkills: List<OgkGameSkill>
+    lateinit var ogkGameGachaCards: List<OgkGameGachaCard>
+    lateinit var ogkGameGachas: List<OgkGameGacha>
+
+    init {
+        load()
+    }
+
+    fun load() {
+        mai2Events = load("maimai2", "game_event.json")
+        mai2Charges = load("maimai2", "game_charge.json")
+        mai2SellingCards = load("maimai2", "game_selling_card.json")
+
+        chu3GameLinkedVerses = load("chusan", "game_linked_verse.json")
+        chu3GameCharges = load("chusan", "game_charge.json")
+        chu3GameEvents = load("chusan", "game_event.json")
+        chu3GameGachaCards = load("chusan", "game_gacha_card.json")
+        chu3GameGachas = load("chusan", "game_gacha.json")
+        chu3GameLoginBonusPresets = load("chusan", "game_login_bonus_preset.json")
+        chu3GameLoginBonuses = load("chusan", "game_login_bonus.json")
+
+        ogkGameCards = load("ongeki", "game_card.json")
+        ogkGameCharas = load("ongeki", "game_chara.json")
+        ogkGameEvents = load("ongeki", "game_event.json")
+        ogkGameMusics = load("ongeki", "game_music.json")
+        ogkGamePoints = load("ongeki", "game_point.json")
+        ogkGamePresents = load("ongeki", "game_present.json")
+        ogkGameRewards = load("ongeki", "game_reward.json")
+        ogkGameSkills = load("ongeki", "game_skill.json")
+        ogkGameGachaCards = load("ongeki", "game_gacha_card.json")
+        ogkGameGachas = load("ongeki", "game_gacha.json")
+    }
+}
+
+fun main(args: Array<String>) {
+    GameDataService().let {
+        it.load()
+        println(it.mai2Events[0].toJson())
+    }
+}
diff --git a/src/main/java/icu/samnyan/aqua/sega/util/StaticRepo.kt b/src/main/java/icu/samnyan/aqua/sega/util/StaticRepo.kt
new file mode 100644
index 00000000..79a21176
--- /dev/null
+++ b/src/main/java/icu/samnyan/aqua/sega/util/StaticRepo.kt
@@ -0,0 +1,26 @@
+package icu.samnyan.aqua.sega.util
+
+import java.lang.reflect.Field
+import java.util.*
+
+open class StaticRepo<T : Any, ID>(val data: List<T>, val idGetter: (T) -> ID) {
+    fun findAll(): List<T> = data
+    private val idMap by lazy { data.associateBy { idGetter(it) } }
+    fun findById(id: ID): Optional<T> = Optional.ofNullable(idMap[id])
+
+    private val enableField by lazy {
+        data.firstOrNull()?.let { obj ->
+            var cls: Class<*>? = obj::class.java
+            var f: Field? = null
+            while (cls != null && f == null) {
+                f = cls.declaredFields.find { it.name == "enable" || it.name == "isEnabled" }
+                cls = cls.superclass
+            }
+            f?.apply { isAccessible = true }
+        }
+    }
+
+    private val enableMap by lazy { data.groupBy { enableField?.get(it) as? Boolean } }
+
+    fun findByEnable(enable: Boolean): List<T> = enableMap[enable] ?: emptyList()
+}