diff --git a/src/main/java/icu/samnyan/aqua/sega/maimai2/handler/UpsertUserAllHandler.kt b/src/main/java/icu/samnyan/aqua/sega/maimai2/handler/UpsertUserAllHandler.kt
index 5fec7aa5..acc2767f 100644
--- a/src/main/java/icu/samnyan/aqua/sega/maimai2/handler/UpsertUserAllHandler.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/maimai2/handler/UpsertUserAllHandler.kt
@@ -28,12 +28,22 @@ class UpsertUserAllHandler(
 ) : BaseHandler {
     fun String.isValidUsername() = isNotBlank() && length <= 8
 
+    // For preventing duplicates: {nonce: processed time}
+    val processed = mutableMapOf<Pair<Long, Long>, Long>()
+    fun cleanupProcessed() = processed.entries.removeIf { System.currentTimeMillis() - it.value > 5 * 60 * 1000 }
+
     @Throws(JacksonException::class)
     override fun handle(request: Map<String, Any>): Any? {
         val upsertUserAll = mapper.convert(request, Mai2UpsertUserAll::class.java)
         val userId = upsertUserAll.userId
         val req = upsertUserAll.upsertUserAll
 
+        // Check if the request has been processed before
+        val nonce = Pair(userId, upsertUserAll.loginDateTime)
+        if (processed.containsKey(nonce)) return SUCCESS
+        processed[nonce] = System.currentTimeMillis()
+        cleanupProcessed()
+
         // If user is guest, just return OK response.
         if ((userId and 281474976710657L) == 281474976710657L) return SUCCESS
 
@@ -75,7 +85,7 @@ class UpsertUserAllHandler(
             listOfNotNull(
                 userExtend, userOption, userCharacterList, userMapList, userLoginBonusList, userItemList,
                 userMusicDetailList, userCourseList, userFriendSeasonRankingList, userFavoriteList,
-                userKaleidxScopeList, userIntimateList
+                userKaleidxScopeList, userIntimateList, upsertUserAll.userPlaylogList
             )
         }.flatten().forEach { it.user = u }
 
@@ -142,6 +152,9 @@ class UpsertUserAllHandler(
             repos.userIntimate.saveAll(lst.mapApply {
                 id = repos.userIntimate.findByUserAndPartnerId(u, partnerId)?.id ?: 0 }) }
 
+        // Added on SDGA 1.65 / SDGB 1.53
+        upsertUserAll.userPlaylogList?.let(repos.userPlaylog::saveAll)
+
         // 2024/10/31 Found some user data findByUserAndKindAndActivityId is not unique
         // I think userActivityList is not important, so I will ignore it
         try {
diff --git a/src/main/java/icu/samnyan/aqua/sega/maimai2/model/request/Mai2UpsertUserAll.kt b/src/main/java/icu/samnyan/aqua/sega/maimai2/model/request/Mai2UpsertUserAll.kt
index 2ad0a8fe..71bd457f 100644
--- a/src/main/java/icu/samnyan/aqua/sega/maimai2/model/request/Mai2UpsertUserAll.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/maimai2/model/request/Mai2UpsertUserAll.kt
@@ -5,7 +5,11 @@ import icu.samnyan.aqua.sega.maimai2.model.userdata.*
 
 class Mai2UpsertUserAll(
     var userId: Long,
-    var upsertUserAll: Mai2UserAll
+    var upsertUserAll: Mai2UserAll,
+
+    var loginDateTime: Long = 0, // Nonce, sort of
+
+    var userPlaylogList: List<Mai2UserPlaylog>? = null, // SDGA 1.65 / SDGB 1.53
 )
 
 class Mai2UserAll {