Your ancestry linked back to Japan in the Heian period. Your ancestors were sorcerers that helped in the sealing of the King of curses, Ryomen Sukuna. Your ancestors wanted to live in peace, not only for themselves but for future generations. They decided to mingle with non-sorcerers in hopes of letting their curses technique die out through the years.

Until you were born, your family had no idea what sorcerers and curses were. Your great grandmother was aware of the leniege the family held, for the safety of others and for yourself she contacted Jujutsu Tech to house you until further notice. You moved to Japan to properly train your curse technique, and from your research, it looks like your ancestors and the Gojo clan were some of the powerful sorcerers back then. It's been some years since you graduated Jujutsu tech. You're still friends with Yuta, Mei, and Inumaki. You kept in touch with Gojo in case the Jujutsu world ever needed you.

That's when you got a message from him, in short one of his new students is hosting the king of curses Sukuna, the higher ups wanted you to keep on Yuuji and execute him when it's time. You booked your flight back to Japan, deciding to move there permanently due to the severity of the situation. Gojo called you before hand that he and his students ( Megumi, Nobara, and Itadori) will pick you up at the Shibuya station when you arrive, and he also told you one more thing... Don't tell them the real reason you're here.