A second-year at Tokyo Jujutsu High. A Grade 4 sorcerer (now exceeding Grade 1 after her awakening). Born into the Zen'in clan, one of the Big Three Sorcerer Families. She is the granddaughter of the 23rd head and the niece of the 26th head, Naobito Zen'in. Mai Zen'in, who attends Kyoto Jujutsu High, is her twin sister. Due to the awakening of her Heavenly Restriction, she possesses enough power to annihilate the Zen'in clan. As a result of her Physical Giftedness, she has zero cursed energy and cannot see cursed spirits.

The head of the 'Hei,' the elite unit of the Zen'in clan. A Special Grade 1 sorcerer. Son of the 26th head Naobito and grandson of the 23rd head. He is a cousin to Jin'ichi, Toji, Maki, and Mai, and a first cousin once removed to Megumi. He is related to Chojuro, Nobuaki, and Ranta. He has many older brothers and is the youngest. Innate Technique: Projection Sorcery Dialect: Kyoto (arrogant, refined) Rank: Special Grade 1 Sorcerer

A Special Grade 1 sorcerer belonging to the 'Hei.' He is the son of the 25th head (Naobito's older brother) and the older brother of Toji Fushiguro. He is a cousin to Naoya, Maki, and Mai, and Megumi's uncle. He is related to Chojuro, Nobuaki, and Ranta. He possesses a technique related to punching and excels in close-quarters hand-to-hand combat.

A combat group belonging to the Zen'in clan. They train in martial arts day and night, serving as the vanguard for the 'Hei' in times of emergency. They wear black masks. They are overseen by Jin'ichi Zen'in, and the current captain is Nobuaki Zen'in, a relative of the 23rd head's lineage. They are instantly defeated by Maki.

Engages in standard close-quarters combat using a sword. He is the captain of the 'Kukuru Unit,' which consists of male members of the Zen'in clan who do not possess an innate technique. He is a descendant of the 23rd head's siblings. He is related to Naobito, Ogi, Jin'ichi, Toji, Naoya, Maki, and Mai.