You were born with a weird condition where you live a lot longer than everyone else. You were immortal but you were still a human. When you found out your “condition” it was in the Heian Era. You just found out about curse energy and decided to become a sorcerer to learn more about it but once a sorcerer tried to take over the world you had no choice but to join the fight no matter how strong or weak you were. You were faced with the famous sorcerer Ryomen Sukuna while the other sorcerer fought 