diff --git a/src/main/java/ext/Ext.kt b/src/main/java/ext/Ext.kt
index 4ec7ee41..d9480486 100644
--- a/src/main/java/ext/Ext.kt
+++ b/src/main/java/ext/Ext.kt
@@ -18,6 +18,7 @@ import org.springframework.http.HttpStatus
 import org.springframework.http.ResponseEntity.BodyBuilder
 import org.springframework.web.bind.annotation.*
 import java.lang.reflect.Field
+import java.nio.charset.StandardCharsets
 import java.nio.file.Path
 import java.security.MessageDigest
 import java.time.LocalDate
@@ -211,6 +212,7 @@ fun Str.center(width: Int, padChar: Char = ' ') = padStart((length + width) / 2,
 fun Str.splitLines() = replace("\r\n", "\n").split('\n')
 @OptIn(ExperimentalStdlibApi::class)
 fun Str.md5() = MD5.digest(toByteArray(Charsets.UTF_8)).toHexString()
+fun Str.fromChusanUsername() = String(this.toByteArray(StandardCharsets.ISO_8859_1), StandardCharsets.UTF_8)
 
 // Coroutine
 suspend fun <T> async(block: suspend kotlinx.coroutines.CoroutineScope.() -> T): T = withContext(Dispatchers.IO) { block() }
diff --git a/src/main/java/icu/samnyan/aqua/sega/chusan/handler/ChusanUpsertApis.kt b/src/main/java/icu/samnyan/aqua/sega/chusan/handler/ChusanUpsertApis.kt
index 9ddd8b2d..73bdc10c 100644
--- a/src/main/java/icu/samnyan/aqua/sega/chusan/handler/ChusanUpsertApis.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/chusan/handler/ChusanUpsertApis.kt
@@ -8,7 +8,6 @@ import icu.samnyan.aqua.sega.chusan.model.userdata.UserCMissionProgress
 import icu.samnyan.aqua.sega.chusan.model.userdata.UserCharge
 import icu.samnyan.aqua.sega.chusan.model.userdata.UserGeneralData
 import icu.samnyan.aqua.sega.general.model.response.UserRecentRating
-import java.nio.charset.StandardCharsets
 
 @Suppress("UNCHECKED_CAST")
 fun ChusanController.upsertApiInit() {
@@ -29,7 +28,7 @@ fun ChusanController.upsertApiInit() {
             val u = (userData?.get(0) ?: return@api null).apply {
                 id = oldUser?.id ?: 0
                 card = oldUser?.card ?: us.cardRepo.findByExtId(uid).expect("Card not found")
-                userName = String(userName.toByteArray(StandardCharsets.ISO_8859_1), StandardCharsets.UTF_8)
+                userName = userName.fromChusanUsername()
                 userNameEx = ""
             }.also { db.userData.saveAndFlush(it) }
 
@@ -63,7 +62,12 @@ fun ChusanController.upsertApiInit() {
 
             // Playlog
             userPlaylogList?.let { db.userPlaylog.saveAll(it) }
-            userNetBattlelogList?.let { db.netBattleLog.saveAll(it) }
+            userNetBattlelogList?.let { db.netBattleLog.saveAll(it.mapApply {
+                selectUserName = selectUserName.fromChusanUsername()
+                opponentUserName1 = opponentUserName1.fromChusanUsername()
+                opponentUserName2 = opponentUserName2.fromChusanUsername()
+                opponentUserName3 = opponentUserName3.fromChusanUsername()
+            }) }
 
             // List data
             userGameOption?.get(0)?.let { obj ->