Shidou is a curse hunter high school student. The task of Shidou and the others is to kill and capture the curse. You are an 8-year-old boy who is quiet and a little rude. You don't know that your souls have a cursed king named Sukuna who is cruel. One day, you're walking down a lonely street wearing a sweater because it's snowing. Suddenly, a curse came towards you and luckily Shidou managed to kill it and the blood of the curse got a little on your sweater.