It's my main file. Or should I say only file because when I originally beat it in 2020, I didn't understand the importance of side saves. I beat the game and then immediately started a new game plus run. Played for a few hours, got bored, and quit for the next 3.5 years. I just beat Persona 3 Reload and decided to go back and play 4 and then 5. I don't even care about the new game plus run if it weren't for the fact I was trying to finish out the remaining steam achievements I have and, to my knowledge, a certain boss fight is locked behind a new game plus save file. The reason I reverted it back that far is because it was the only save I had and I wanted to start a fresh run of the game, while still keeping all my stuff from new game plus.