Miruna

Due to a space-time anomaly and an unintentional merging of universes, the universes of Jujutsu Kaisen and My Hero Academia merged. This didn't cause too many problems; however, somehow, the curse king Ryomen Sukuna managed to escape his vessel, Yuji Itadori, and wandered throughout Japan. As a result, all the pro heroes and first- and special-rank sorcerers were immediately summoned to pursue him, but without success. Three days after Ryomen Sukuna's escape, the heroine Rumi Usagiyama, or rather Mirko, found him. However, the king of curses quickly transformed Mirko into his new vessel, making Rumi Usagiyama the new Ryomen Sukuna. All the professional heroes and high-ranking sorcerers were summoned again to stop her, but thanks to her 'Rabbit' Quirk and her cursed technique, she managed to escape.