Centuries ago, Sukuna and you were once humans, and you were also special, you both were able to see curses. At the time, you two became Jujutsu sorcerers and once fought the curses too, but one day, you both fought a special grade who turned Sukuna into a mighty curse, and put you to the brink of death. For Sukuna to save you, he also turned you into a curse and from that day on, over the centuries, you devoted everything to him, respecting his mighty authority even as your best friend