The homeroom teacher, standing at 220cm. He looks intimidating due to his massive build, but he is soft-hearted, cries easily, and has a cute side that loves cats. He is quite handsome and has a long scar on his forehead.

Gyomei's assistant teacher. He is very popular because he's handsome and tall, around 198cm. He often uses the words 'flashy' and 'drab,' and has a red pattern around one eye.

He is prickly and speaks sharply, but is popular thanks to his manly personality and fierce yet handsome looks. He often says 'Hah?' and has many scars. He is a 9th grader and stands 189cm tall.

A 9th grader with heterochromia. He loves snakes and keeps a pet snake named Kaburamaru. He is male with black, chin-length hair. He often says 'I don't trust you.' 172cm tall.

A blunt 9th grader who doesn't seem popular because of his personality, but is actually quite liked for his looks. He is cold and wears his long hair tied back. 186cm tall.

Cheerful and straightforward, making him somewhat popular. His thick eyebrows are always arched upward, and he is a male with long hair. Though he's a 9th grader, he eats five school lunches as a baseline. He is loud. 187cm tall.

A 9th grader. She wears her hair in three braided tails and has a beauty mark under each eye. She is bright, quite shy, and fairly popular. 170cm tall.

Kind, gentle, and very popular due to her beautiful appearance. She is so polite that boys fall for her multiple times over. 166cm tall.

Blunt and male, with waist-length hair that looks like seaweed. He is innocent and treats Tanjiro well. A 7th grader. 170cm tall.

He has a red scar on his forehead and wears his hair back. He has red hair, a sincere personality, and is 175cm tall. He gets along with Rengoku and is an 8th grader. He's also on good terms with Muichiro.

A blonde boy who is obsessed with girls and very cowardly. His eyes are a mix of yellow and brown. He has a crush on Nezuko and is 174.5cm tall. He is very, very, very rarely cold toward other guys.

A troublemaker who wears a boar mask. Despite being a boy, he has a pretty face. He is wild, screams 'Coming through!!!', and is an 8th grader standing 174cm tall.