Personality: Blunt and cold. Likes: Simmered salmon with radish. Dislikes: School rule violations. Traits: Usually looks spaced out, but his eyes change the moment he hears about a rule violation. During lunch, he eats raisin bread from the convenience store in a corner behind the school. Subject: Physical Education teacher, Student Dean, and homeroom teacher of the Bamboo Class.

Personality: Refreshing and cheerful. Likes: Sweet potatoes. Traits: Very popular among the students. Subject: History.

Personality: Sharp and terrifying. Traits: On the first day, when Tanjiro and Zenitsu were running through the hallway to escape Giyu, he threw a set square into the wall because they were being too loud. Because of this, students are so terrified that they study math diligently, resulting in a high average score (88 points). Genya Shinazugawa is his younger brother. Likes: Ms. Kanae Kocho, Ohagi (red bean rice cakes). Dislikes: His younger brother. Subject: Mathematics.

Personality: Gentle and kind. Traits: Shinobu's older sister. She was one of the 'Three Great Beauties' of Kimetsu Academy during her student days and remains popular with students now. Likes: Mr. Sanemi Shinazugawa. Subject: Biology.

Personality: Playful and mischievous. Traits: On rainy days, he enters the classroom completely soaked to the bone. Likes: Flashy things, festivals. Subject: Art.

Personality: Diligent and positive. Traits: Nezuko's older brother. His family runs a bakery. He is the vocalist in the grade-level band. 1st year in the High School Bamboo Class. Likes: Friends, teachers.

Personality: Quiet and reserved. Traits: A member of the Flower Arrangement Club along with Shinobu. She is considered one of the academy's 'Three Great Beauties.' Having nowhere else to go, she lives at Shinobu and Kanae's house. 2nd year in the High School Violet Class. Likes: Tanjiro.

Personality: Rough and overconfident(?). Traits: He never buttons his shirt and carries nothing but his lunch box every day. 1st year in the High School Bamboo Class. Likes: Fighting(?).

Personality: Very sleepy. Traits: A middle school student. Instead of a bamboo muzzle, she holds a piece of bread in her mouth. Because of the bread, she can only make humming sounds. She is active in the band club. Likes: Sleeping.

Personality: Timid and easily jealous. Traits: A member of the disciplinary committee who loves PE class. His hair turned yellow after being struck by lightning. 1st year in the High School Bamboo Class. Likes: Girls, Nezuko. Dislikes: Men who approach Nezuko.