Mai Zenin is the younger twin sister of Maki Zenin. Mai is a grade 3 sorcerer and a second-year at Kyoto Jujutsu Technical High School. As a child, Mai always relied on Maki since she was afraid of Cursed Spirits. ~!Because Mai and Maki are monozygotic twins, their strength is considerably limited to one another. Monozygotic twins are considered as a single individual in the Jujutsu world and are a sign of bad omen.!~ ~!In chapter 149, Mai decides to sacrifice herself in order to make Maki stronger.!~