diff --git a/data/file_list.yml b/data/file_list.yml
index 23efc2e1..900aa3d4 100644
--- a/data/file_list.yml
+++ b/data/file_list.yml
@@ -158496,87 +158496,87 @@ Util/ScenePrepoFunction.o:
   - offset: 0x574094
     size: 288
     label: _ZN2rs32trySavePrepoCompleteMainScenarioEiilll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x5741b4
     size: 380
     label: _ZN2rs22trySavePrepoStartStageEPKcRKN4sead7Vector3IfEElll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x574330
     size: 380
     label: _ZN2rs21trySavePrepoExitStageEPKcRKN4sead7Vector3IfEElll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x5744ac
     size: 380
     label: _ZN2rs21trySavePrepoMissEventEPKcRKN4sead7Vector3IfEElll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x574628
     size: 364
     label: _ZN2rs25trySavePrepoShineGetEventEPKciiilll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x574794
     size: 308
     label: _ZN2rs30trySavePrepoReceiveAchievementEPKcilll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x5748c8
     size: 1216
     label: _ZN2rs31trySavePrepoAchievementProgressE22GameDataHolderAccessorlll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x574d88
     size: 324
     label: _ZN2rs23trySavePrepoGetCapEventEPKcilll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x574ecc
     size: 328
     label: _ZN2rs25trySavePrepoGetClothEventEPKcilll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x575014
     size: 328
     label: _ZN2rs24trySavePrepoGetGiftEventEPKcilll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x57515c
     size: 328
     label: _ZN2rs27trySavePrepoGetStickerEventEPKcilll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x5752a4
     size: 292
     label: _ZN2rs26trySavePrepoChangeCapEventEPKclll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x5753c8
     size: 296
     label: _ZN2rs28trySavePrepoChangeClothEventEPKclll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x5754f0
     size: 308
     label: _ZN2rs26trySavePrepoFirstHackEventEPKcilll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x575624
     size: 384
     label: _ZN2rs30trySavePrepoGetCollectBgmEventEPKcS1_billl
-    status: NotDecompiled
+    status: Matching
   - offset: 0x5757a4
     size: 504
     label: _ZN2rs25trySavePrepoSettingsStateEbPKcRK14GameConfigDatall
-    status: NotDecompiled
+    status: Matching
   - offset: 0x57599c
     size: 256
     label: _ZN2rs28trySavePrepoSeparatePlayModeEblll
-    status: NotDecompiled
+    status: Matching
   - offset: 0x575a9c
     size: 4
     label: _ZN2rs5prepo17enableIsSavePrepoEv
-    status: NotDecompiled
+    status: Matching
   - offset: 0x575aa0
     size: 4
     label: _ZN2rs5prepo18disableIsSavePrepoEv
-    status: NotDecompiled
+    status: Matching
   - offset: 0x575aa4
     size: 68
     label: _ZN2rs5prepo18generateSaveDataIdEv
-    status: NotDecompiled
+    status: Matching
   - offset: 0x575ae8
     size: 12
     label: _ZN2rs5prepo17calcPrepoHashCodeEPKc
-    status: NotDecompiled
+    status: Matching
 Util/StageInputFunction.o:
   '.text':
   - offset: 0x575af4
diff --git a/lib/al/Library/Base/HashCodeUtil.cpp b/lib/al/Library/Base/HashCodeUtil.cpp
index a6a45e40..4197ebe5 100644
--- a/lib/al/Library/Base/HashCodeUtil.cpp
+++ b/lib/al/Library/Base/HashCodeUtil.cpp
@@ -5,37 +5,37 @@
 #include <cstring>
 
 namespace al {
-s32 calcHashCode(const char* str) {
+u32 calcHashCode(const char* str) {
     if (str[0] == '\0')
         return 0;
 
-    s32 hashCode = 0;
+    u32 hashCode = 0;
     for (s32 i = 0; str[i] != '\0'; i++)
         hashCode = (hashCode * 0x1f) + str[i];
 
     return hashCode;
 }
 
-s32 calcHashCodeLower(const char* str) {
-    s32 hashCode = 0;
+u32 calcHashCodeLower(const char* str) {
+    u32 hashCode = 0;
     for (s32 i = 0; str[i] != '\0'; i++)
         hashCode = (hashCode * 0x1f) + tolower(str[i]);
 
     return hashCode;
 }
 
-s32 calcHashCodeFmt(const char* format, std::va_list argv) {
+u32 calcHashCodeFmt(const char* format, std::va_list argv) {
     char buf[0x100];
     vsnprintf(buf, 0x100, format, argv);
 
     return calcHashCode(buf);
 }
 
-s32 calcHashCodeFmt(const char* format, ...) {
+u32 calcHashCodeFmt(const char* format, ...) {
     std::va_list argv;
 
     va_start(argv, format);
-    s32 result = calcHashCodeFmt(format, argv);
+    u32 result = calcHashCodeFmt(format, argv);
     va_end(argv);
 
     return result;
diff --git a/lib/al/Library/Base/HashCodeUtil.h b/lib/al/Library/Base/HashCodeUtil.h
index 7e54a332..140bfe8a 100644
--- a/lib/al/Library/Base/HashCodeUtil.h
+++ b/lib/al/Library/Base/HashCodeUtil.h
@@ -4,9 +4,9 @@
 #include <cstdarg>
 
 namespace al {
-s32 calcHashCode(const char* str);
-s32 calcHashCodeLower(const char* str);
-s32 calcHashCodeFmt(const char* format, std::va_list argv);
-s32 calcHashCodeFmt(const char* format, ...);
+u32 calcHashCode(const char* str);
+u32 calcHashCodeLower(const char* str);
+u32 calcHashCodeFmt(const char* format, std::va_list argv);
+u32 calcHashCodeFmt(const char* format, ...);
 const char* getBaseName(const char* name);
 }  // namespace al
diff --git a/src/Util/ScenePrepoFunction.cpp b/src/Util/ScenePrepoFunction.cpp
new file mode 100644
index 00000000..d2173b72
--- /dev/null
+++ b/src/Util/ScenePrepoFunction.cpp
@@ -0,0 +1,460 @@
+#include "Util/ScenePrepoFunction.h"
+
+#include <nn/account.h>
+#include <nn/prepo.h>
+#include <nn/time.h>
+
+#include "Library/Base/HashCodeUtil.h"
+
+#include "System/GameConfigData.h"
+#include "System/GameDataFunction.h"
+#include "System/GameDataUtil.h"
+#include "Util/AchievementUtil.h"
+#include "Util/ClothUtil.h"
+
+namespace rs {
+static char buffer[0x2000];
+
+bool trySavePrepoCompleteMainScenario(s32 worldId, s32 mainScenarioNo, s64 playTime, s64 saveDataId,
+                                      s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("complete_main_scenario_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(6));
+
+    playReport.Add("world_id", static_cast<s64>(worldId));
+    playReport.Add("main_scenario_no", static_cast<s64>(mainScenarioNo));
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoStartStage(const char* stageName, const sead::Vector3f& position, s64 playTime,
+                            s64 saveDataId, s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("stage_in_out_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    // BUG: buffer too small (prepared for 8 entries, adds 9)
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(8));
+
+    playReport.Add("stage_name", static_cast<s64>(prepo::calcPrepoHashCode(stageName)));
+    playReport.Add("x", position.x);
+    playReport.Add("y", position.y);
+    playReport.Add("z", position.z);
+    playReport.Add("in_out_type", InOutType_Start);
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoExitStage(const char* stageName, const sead::Vector3f& position, s64 playTime,
+                           s64 saveDataId, s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("stage_in_out_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    // BUG: buffer too small (prepared for 8 entries, adds 9)
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(8));
+
+    playReport.Add("stage_name", static_cast<s64>(prepo::calcPrepoHashCode(stageName)));
+    playReport.Add("x", position.x);
+    playReport.Add("y", position.y);
+    playReport.Add("z", position.z);
+    playReport.Add("in_out_type", InOutType_Exit);
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoMissEvent(const char* stageName, const sead::Vector3f& position, s64 playTime,
+                           s64 saveDataId, s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("stage_in_out_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    // BUG: buffer too small (prepared for 8 entries, adds 9)
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(8));
+
+    playReport.Add("stage_name", static_cast<s64>(prepo::calcPrepoHashCode(stageName)));
+    playReport.Add("x", position.x);
+    playReport.Add("y", position.y);
+    playReport.Add("z", position.z);
+    playReport.Add("in_out_type", InOutType_Miss);
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoShineGetEvent(const char* stageName, s32 shineId, s32 totalShineNum,
+                               s32 totalShopShineNum, s64 playTime, s64 saveDataId,
+                               s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("shine_get_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(8));
+
+    playReport.Add("stage_name", static_cast<s64>(prepo::calcPrepoHashCode(stageName)));
+    playReport.Add("shine_id", static_cast<s64>(shineId));
+    playReport.Add("total_shine_num", static_cast<s64>(totalShineNum));
+    playReport.Add("total_shop_shine_num", static_cast<s64>(totalShopShineNum));
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoReceiveAchievement(const char* achievementName, s32 receivedNum, s64 playTime,
+                                    s64 saveDataId, s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("receive_achievement_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(6));
+
+    playReport.Add("achievement_name", static_cast<s64>(prepo::calcPrepoHashCode(achievementName)));
+    playReport.Add("received_num", static_cast<s64>(receivedNum));
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoAchievementProgress(GameDataHolderAccessor accessor, s64 playTime, s64 saveDataId,
+                                     s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("achievement_progress_state");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(38));
+
+    playReport.Add("shine_gather", static_cast<s64>(GameDataFunction::getTotalShineNum(accessor)));
+    playReport.Add("shine_collect_coin_shop",
+                   static_cast<s64>(calcBuyItemNumForCoinCollectByWorld(accessor)));
+    playReport.Add("shine_shine_2d", static_cast<s64>(calcGetShineNumDot(accessor)));
+    playReport.Add("shine_treasure_box", static_cast<s64>(calcGetShineNumTreasureBox(accessor)));
+    playReport.Add("shine_music_note", static_cast<s64>(calcGetShineNumNoteObj(accessor)));
+    // typo: athretic / athletic
+    playReport.Add("shine_timer_athretic",
+                   static_cast<s64>(calcGetShineNumTimerAthletic(accessor)));
+    playReport.Add("shine_captain_kinopio",
+                   static_cast<s64>(calcGetShineNumKinopioBrigade(accessor)));
+    playReport.Add("shine_traveling_peach",
+                   static_cast<s64>(calcGetShineNumWorldTravelingPeach(accessor)));
+    playReport.Add("shine_collect_animal_all",
+                   static_cast<s64>(calcGetShineNumCollectAnimal(accessor)));
+    playReport.Add("shine_kuribo_girl", static_cast<s64>(calcGetShineNumKuriboGirl(accessor)));
+    playReport.Add("shine_jugem", static_cast<s64>(calcGetShineNumJugemFish(accessor)));
+    playReport.Add("shine_seed", static_cast<s64>(calcGetShineNumGrowPlant(accessor)));
+    playReport.Add("shine_rabbit", static_cast<s64>(calcGetShineNumRabbit(accessor)));
+    playReport.Add("shine_dig_point", static_cast<s64>(calcGetShineNumDigPoint(accessor)));
+    playReport.Add("shine_cap_hanger", static_cast<s64>(calcGetShineNumCapHanger(accessor)));
+    playReport.Add("shine_bird", static_cast<s64>(calcGetShineNumBird(accessor)));
+    playReport.Add("shine_costume_room", static_cast<s64>(calcGetShineNumCostumeRoom(accessor)));
+    playReport.Add("shine_cap_throttle", static_cast<s64>(calcGetShineNumSlot(accessor)));
+    playReport.Add("shine_hide_and_seek_cap_man",
+                   static_cast<s64>(calcGetShineNumHideAndSeekCapMan(accessor)));
+    playReport.Add("shine_collect_bgm", static_cast<s64>(calcGetShineNumCollectedBgm(accessor)));
+    playReport.Add("shine_hint_photo", static_cast<s64>(calcGetShineNumHintPhoto(accessor)));
+    playReport.Add("mini_game_race_man", static_cast<s64>(calcGetShineNumRace(accessor)));
+    playReport.Add("mini_game_figure_walker",
+                   static_cast<s64>(calcGetShineNumFigureWalking(accessor)));
+    playReport.Add("mini_game_sphinx_quiz", static_cast<s64>(calcSphinxQuizCompleteNum(accessor)));
+    playReport.Add("souvenir_count",
+                   static_cast<s64>(calcHaveGiftNum(accessor) + calcHaveStickerNum(accessor)));
+    playReport.Add("capture_count", static_cast<s64>(calcHackObjNum(accessor)));
+    playReport.Add("costume_cap", static_cast<s64>(calcHaveCapNum(accessor)));
+    playReport.Add("costume_clothes", static_cast<s64>(calcHaveClothNum(accessor)));
+    playReport.Add("other_moon_stone_all", static_cast<s64>(calcUnlockMoonRockNum(accessor)));
+    playReport.Add("other_world_warp_hole_all",
+                   static_cast<s64>(calcWorldWarpHoleThroughNum(accessor)));
+    playReport.Add("other_check_point", static_cast<s64>(calcGetCheckpointNum(accessor)));
+    playReport.Add("other_coin", static_cast<s64>(getTotalCoinNum(accessor)));
+    playReport.Add("other_jump", static_cast<s64>(getPlayerJumpCount(accessor)));
+    playReport.Add("other_cap_throw", static_cast<s64>(getPlayerThrowCapCount(accessor)));
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoGetCapEvent(const char* itemName, s32 totalNum, s64 playTime, s64 saveDataId,
+                             s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("collect_item_get_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(7));
+
+    playReport.Add("category", ItemCategoryType_Cap);
+    playReport.Add("item_name", static_cast<s64>(prepo::calcPrepoHashCode(itemName)));
+    playReport.Add("total_num", static_cast<s64>(totalNum));
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoGetClothEvent(const char* itemName, s32 totalNum, s64 playTime, s64 saveDataId,
+                               s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("collect_item_get_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(7));
+
+    playReport.Add("category", ItemCategoryType_Cloth);
+    playReport.Add("item_name", static_cast<s64>(prepo::calcPrepoHashCode(itemName)));
+    playReport.Add("total_num", static_cast<s64>(totalNum));
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoGetGiftEvent(const char* itemName, s32 totalNum, s64 playTime, s64 saveDataId,
+                              s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("collect_item_get_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(7));
+
+    playReport.Add("category", ItemCategoryType_Gift);
+    playReport.Add("item_name", static_cast<s64>(prepo::calcPrepoHashCode(itemName)));
+    playReport.Add("total_num", static_cast<s64>(totalNum));
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoGetStickerEvent(const char* itemName, s32 totalNum, s64 playTime, s64 saveDataId,
+                                 s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("collect_item_get_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(7));
+
+    playReport.Add("category", ItemCategoryType_Sticker);
+    playReport.Add("item_name", static_cast<s64>(prepo::calcPrepoHashCode(itemName)));
+    playReport.Add("total_num", static_cast<s64>(totalNum));
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoChangeCapEvent(const char* itemName, s64 playTime, s64 saveDataId,
+                                s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("cloth_change_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(6));
+
+    playReport.Add("category", ItemCategoryType_Cap);
+    playReport.Add("item_name", static_cast<s64>(prepo::calcPrepoHashCode(itemName)));
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoChangeClothEvent(const char* itemName, s64 playTime, s64 saveDataId,
+                                  s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("cloth_change_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(6));
+
+    playReport.Add("category", ItemCategoryType_Cloth);
+    playReport.Add("item_name", static_cast<s64>(prepo::calcPrepoHashCode(itemName)));
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoFirstHackEvent(const char* hackObjName, s32 totalHackedObjNum, s64 playTime,
+                                s64 saveDataId, s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("first_hack_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(6));
+
+    playReport.Add("hack_obj_name", static_cast<s64>(prepo::calcPrepoHashCode(hackObjName)));
+    playReport.Add("total_hacked_obj_num", static_cast<s64>(totalHackedObjNum));
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoGetCollectBgmEvent(const char* bgmResourceName, const char* bgmSituationName,
+                                    bool isBailout, s32 collectedBgmNum, s64 playTime,
+                                    s64 saveDataId, s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("get_collect_bgm_event");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(8));
+
+    playReport.Add("bgm_resource_name",
+                   static_cast<s64>(prepo::calcPrepoHashCode(bgmResourceName)));
+    playReport.Add("bgm_situation_name",
+                   static_cast<s64>(prepo::calcPrepoHashCode(bgmSituationName)));
+    playReport.Add("is_bailout", static_cast<s64>(isBailout));
+    playReport.Add("collected_bgm_num", static_cast<s64>(collectedBgmNum));
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoSettingsState(bool isKidsMode, const char* language,
+                               const GameConfigData& configData, s64 saveDataId,
+                               s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("settings_state");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    // NOTE: buffer too large (prepared for 14 entries, adds 12)
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(14));
+
+    playReport.Add("is_kids_mode", static_cast<s64>(isKidsMode));
+    playReport.Add("language", static_cast<s64>(prepo::calcPrepoHashCode(language)));
+    playReport.Add("camera_stick_sensitivity_level",
+                   static_cast<s64>(configData.getCameraStickSensitivityLevel()));
+    bool isCameraReverseInputH = configData.isCameraReverseInputH();
+    bool isCameraReverseInputV = configData.isCameraReverseInputV();
+    playReport.Add("camera_reverse_input",
+                   static_cast<s64>((isCameraReverseInputH << 1) | isCameraReverseInputV));
+    playReport.Add("is_valid_camera_gyro", static_cast<s64>(configData.isValidCameraGyro()));
+    playReport.Add("camera_gyro_sensitivity_level",
+                   static_cast<s64>(configData.getCameraGyroSensitivityLevel()));
+    playReport.Add("is_use_open_list_additional_button",
+                   static_cast<s64>(configData.isUseOpenListAdditionalButton()));
+    playReport.Add("is_valid_pad_rumble", static_cast<s64>(configData.isValidPadRumble()));
+    playReport.Add("pad_rumble_level", static_cast<s64>(configData.getPadRumbleLevel()));
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+bool trySavePrepoSeparatePlayMode(bool isSeparatePlayMode, s64 playTime, s64 saveDataId,
+                                  s64 acrossPlayTime) {
+    nn::account::Uid lastOpenedUser;
+    nn::prepo::PlayReport playReport = nn::prepo::PlayReport("separate_play_mode_state");
+
+    if (nn::account::GetLastOpenedUser(&lastOpenedUser).IsFailure() || !lastOpenedUser.IsValid())
+        return false;
+
+    playReport.SetBuffer(&buffer, nn::prepo::PlayReport::CalcBufferSize(5));
+
+    playReport.Add("is_separate_play_mode", static_cast<s64>(isSeparatePlayMode));
+    playReport.Add("play_time", playTime);
+    playReport.Add("across_play_time", acrossPlayTime);
+    playReport.Add("save_data_id", saveDataId);
+    playReport.Add("app_version", 1l);
+
+    return playReport.Save(lastOpenedUser).IsSuccess();
+}
+
+namespace prepo {
+void enableIsSavePrepo() {}
+
+void disableIsSavePrepo() {}
+
+s64 generateSaveDataId() {
+    if (!nn::time::IsInitialized() && nn::time::Initialize().IsFailure())
+        return -1l;
+
+    nn::time::PosixTime time;
+    if (nn::time::StandardUserSystemClock::GetCurrentTime(&time).IsFailure())
+        return -1l;
+
+    return time.time;
+}
+
+u32 calcPrepoHashCode(const char* str) {
+    if (!str)
+        return 0;
+
+    return al::calcHashCode(str);
+}
+}  // namespace prepo
+}  // namespace rs
diff --git a/src/Util/ScenePrepoFunction.h b/src/Util/ScenePrepoFunction.h
index f6e3b56e..98362e0f 100644
--- a/src/Util/ScenePrepoFunction.h
+++ b/src/Util/ScenePrepoFunction.h
@@ -3,32 +3,62 @@
 #include <basis/seadTypes.h>
 #include <math/seadVector.h>
 
-class GameDataHolderAccessor;
+#include "System/GameDataHolderAccessor.h"
+
 class GameConfigData;
 
 namespace rs {
-bool trySavePrepoCompleteMainScenario(s32, s32, s64, s64, s64);
-bool trySavePrepoStartStage(const char*, const sead::Vector3f&, s64, s64, s64);
-bool trySavePrepoExitStage(const char*, const sead::Vector3f&, s64, s64, s64);
-bool trySavePrepoMissEvent(const char*, const sead::Vector3f&, s64, s64, s64);
-bool trySavePrepoShineGetEvent(const char*, s32, s32, s32, s64, s64, s64);
-bool trySavePrepoReceiveAchievement(const char* s32, s64, s64, s64);
-bool trySavePrepoAchievementProgress(GameDataHolderAccessor, s64, s64, s64);
-bool trySavePrepoGetCapEvent(const char*, s32, s64, s64, s64);
-bool trySavePrepoGetClothEvent(const char*, s32, s64, s64, s64);
-bool trySavePrepoGetGiftEvent(const char*, s32, s64, s64, s64);
-bool trySavePrepoGetStickerEvent(const char*, s32, s64, s64, s64);
-bool trySavePrepoChangeCapEvent(const char*, s64, s64, s64);
-bool trySavePrepoChangeClothEvent(const char*, s64, s64, s64);
-bool trySavePrepoFirstHackEvent(const char*, s32, s64, s64, s64);
-bool trySavePrepoGetCollectBgmEvent(const char*, const char*, bool, s32, s64, s64, s64);
-bool trySavePrepoSettingsState(bool, const char*, const GameConfigData&, s64, s64);
-bool trySavePrepoSeparatePlayMode(bool, s64, s64, s64);
+enum InOutType : s64 { InOutType_Start, InOutType_Exit, InOutType_Miss };
+
+enum ItemCategoryType : s64 {
+    ItemCategoryType_Cap,
+    ItemCategoryType_Cloth,
+    ItemCategoryType_Gift,
+    ItemCategoryType_Sticker
+};
+
+bool trySavePrepoCompleteMainScenario(s32 worldId, s32 mainScenarioNo, s64 playTime, s64 saveDataId,
+                                      s64 acrossPlayTime);
+bool trySavePrepoStartStage(const char* stageName, const sead::Vector3f& position, s64 playTime,
+                            s64 saveDataId, s64 acrossPlayTime);
+bool trySavePrepoExitStage(const char* stageName, const sead::Vector3f& position, s64 playTime,
+                           s64 saveDataId, s64 acrossPlayTime);
+bool trySavePrepoMissEvent(const char* stageName, const sead::Vector3f& position, s64 playTime,
+                           s64 saveDataId, s64 acrossPlayTime);
+bool trySavePrepoShineGetEvent(const char* stageName, s32 shineId, s32 totalShineNum,
+                               s32 totalShopShineNum, s64 playTime, s64 saveDataId,
+                               s64 acrossPlayTime);
+bool trySavePrepoReceiveAchievement(const char* achievementName, s32 receivedNum, s64 playTime,
+                                    s64 saveDataId, s64 acrossPlayTime);
+bool trySavePrepoAchievementProgress(GameDataHolderAccessor accessor, s64 playTime, s64 saveDataId,
+                                     s64 acrossPlayTime);
+bool trySavePrepoGetCapEvent(const char* itemName, s32 totalNum, s64 playTime, s64 saveDataId,
+                             s64 acrossPlayTime);
+bool trySavePrepoGetClothEvent(const char* itemName, s32 totalNum, s64 playTime, s64 saveDataId,
+                               s64 acrossPlayTime);
+bool trySavePrepoGetGiftEvent(const char* itemName, s32 totalNum, s64 playTime, s64 saveDataId,
+                              s64 acrossPlayTime);
+bool trySavePrepoGetStickerEvent(const char* itemName, s32 totalNum, s64 playTime, s64 saveDataId,
+                                 s64 acrossPlayTime);
+bool trySavePrepoChangeCapEvent(const char* itemName, s64 playTime, s64 saveDataId,
+                                s64 acrossPlayTime);
+bool trySavePrepoChangeClothEvent(const char* itemName, s64 playTime, s64 saveDataId,
+                                  s64 acrossPlayTime);
+bool trySavePrepoFirstHackEvent(const char* hackObjName, s32 totalHackedObjNum, s64 playTime,
+                                s64 saveDataId, s64 acrossPlayTime);
+bool trySavePrepoGetCollectBgmEvent(const char* bgmResourceName, const char* bgmSituationName,
+                                    bool isBailout, s32 collectedBgmNum, s64 playTime,
+                                    s64 saveDataId, s64 acrossPlayTime);
+bool trySavePrepoSettingsState(bool isKidsMode, const char* language,
+                               const GameConfigData& configData, s64 saveDataId,
+                               s64 acrossPlayTime);
+bool trySavePrepoSeparatePlayMode(bool isSeparatePlayMode, s64 playTime, s64 saveDataId,
+                                  s64 acrossPlayTime);
 
 namespace prepo {
 void enableIsSavePrepo();
 void disableIsSavePrepo();
 s64 generateSaveDataId();
-s32 calcPrepoHashCode(const char*);
+u32 calcPrepoHashCode(const char* str);
 }  // namespace prepo
 }  // namespace rs