To delete that persistent file you need to go to the computer's storage look for the appdata and then find the renp'y file within all of your data will be there and if you delete the persistent file there it affects the game
Hi, I didn't really give a good explanation you need to go to on your case the Acer(C:) look for the users file, select your user name inside, then look for the appdata after opening that go to the roaming and look for the RenPy inside look for the Lustful Desires file open it and all of your save files will be there including your persistent one, if you erase it from there it's permanent erasure.(I'd use a screenshot to show you but my pc is not taking the fricking screenshot)