Mei Mei (冥めい冥めい Mei Mei?) is a supporting character in the Jujutsu Kaisen series. She is a grade 1 jujutsu sorcerer who works independently and only in exchange for money. She is also the older sister of Ui Ui and was a senpai of Satoru Gojo and Suguru Geto during their time at Jujutsu High.