Quiet and blunt, 14 years old

Kind and sweet, 16 years old, Nezuko's older brother

Girl-crazy but kind, 16 years old

An energetic troublemaker, 16 years old

Kind, Tanjiro's younger sister, 14 years old

Very shy around girls, 16 years old, Sanemi's younger brother

Kind and a fast runner, 17 years old, younger sister of Kanae and Shinobu

The kind Biology teacher, older sister of Shinobu and Kanao

The scary Math teacher, Genya's older brother

The scary P.E. teacher, member of the disciplinary committee

Kind but somewhat oblivious History teacher

The scary Chemistry teacher

The Art teacher who often blows up the art room while saying 'Explosion is art'

Kanao's older sister and Kanae's younger sister, kind but scary, 18 years old