I forgot to report this. When i update Chara CC 1.1 to 1.2 and My Chara Mansion 1.3 to 1.4 i can't update both those games directly by tap apk file. There's an error while updating directly. The only way to update by backup save file first, uninstall old game then install new update.
Luckily i installed all your works in to my old phone with Android 8.1, i can backup my save first before updating, but my newest phone with Android 13 prevent user to access Android/Data folder, it means they can't backup save game if there's an error.
Both Chara CC 1.2 and My Chara Mansion 1.4 using Unity 6 right? Please check about that, probably the problem is error while updating old Unity to Unity 6. I don't have any problem updating directly Chara CC 1.2 to Bugfix 1.2. It works fine.
Next time probably you must be careful updating old Unity to Unity 6. For people who have Android 13 or newest who don't have access data folder, they won't be able to backup save if there's an error.