Hell on Earth (Sukuna x Reader) PREQUEL

[ PREQUEL TO 'Heaven's Cursed Souls ] In which the King of Curses himself falls for a regular-looking human a thousand years ago. Or at least he thought she was. |-~•~-| "Come on! You missed out on a thousand years so I have to catch you up to speed! Y'know, YOLO! That means 'you only live once' but I guess this is y...