heya, just go to this folder. There is no need to fully erase the data if you only want to enter the void. But if you want just remove the RingManSpiritHunt folder and play the game, this will create a new data.
Also make sure to click View and check the "Hidden Items"
C:\Users\yourusername\AppData\LocalLow\LAGS
1. Open "RingManSpiritHunt" folder
2. Click and open the SaveData.txt
Btw this text are copied from Sei u can thank him ^_^