Sorry about the bug.😭 This game is automatically saved when the MC enters a new area and is returned to the entrance if the battle is lost. so If it was replaced another save file, that would be a fatal bug. if you tell me more about the situation I may be able to fix it.
I had a new save started to just run through the game again, my first file was a previous play through and i was using my second file for the new run but when i died to linnea i was loaded into my first save file and when i checked the saves the first and second files were the same
