Mei Mei (冥めい冥めい Mei Mei) holds the rank of Grade 1 Jujutsu Sorcerer, functioning as an independent sorcerer motivated by financial gain and intriguingly serving as the elder sibling of Ui Ui, all while her history is further illuminated by her mentorship to notable figures like Satoru Gojo, Suguru Geto, and Shoko Ieiri during their formative years at Jujutsu High, signifying her pivotal role within the intricate web of relationships and experiences that shape the world of Jujutsu sorcery.