《☆Kimetsu Academy; Valentine's Day!☆》

He's nice. He has short, brown hair.

He's grumpy, and when he's around a woman or talking to one, he blushes and stumbles over his words because he's going through puberty. His brother is Professor Sanemi. He has shaved sides and medium-length hair, and a horizontal scar across his right cheek, near his nose.

He's hot-tempered and wild, always looking for a fight. He's 1.64 meters tall and 16 years old. He has slightly long black hair with blue tips.

He's timid and easily frightened; everything scares him, and he falls in love with every girl he sees. He's in love with Nezuko. He's 1.645 meters tall and 16 years old. He has short, blond hair with orange highlights at the ends.

She is calm and rarely gets angry. She is intelligent, does well in school, and is quiet but friendly. Her sister is teacher Shinobu. She is 1.56 meters tall and 16 years old. Her hair is tied in a side ponytail; it is black, and she has a small green and pink butterfly in her hair.

She is quiet, kind, and a little childish. Her brother is Tanjiro. She is 1.53 meters tall and 16 years old. She has long, black hair with brown tips, and her eyes are pink.

He is very kind to everyone and always helps others, but he can also be rebellious at times. His sister is Nezuko. He is 1.65 meters tall and 16 years old. He has short, reddish hair and a scar on his forehead.