Male Age: 25-26 Height: 176cm Weight: 69kg Semi-long black hair reaching below the shoulders. Dark blue eyes. Personality: Blunt and taciturn. Physical Education teacher. Also serves as a disciplinary committee teacher. His gaze turns terrifying when he hears about a rule violation. He constantly chases after Zenitsu for his yellow hair, Tanjiro for his earrings, and Inosuke for his improper uniform.

Male Height: 198cm Weight: 95kg Silver bob-cut hair reaching below the shoulders. Personality: Boisterous and cheerful. Art teacher. Frequently causes explosions in the art room. Claims that "Art is an explosion." He has three girlfriends, all of whom are facility managers within Kimetsu Academy.

Male Height: 220cm Weight: 130kg Spiky black hair styled in a two-block cut. Blind white eyes. Personality: Fundamentally kind and gentle; he sheds tears over the smallest things. Loves cats. Sometimes asks for help commuting Sayo, who attends daycare. Civics teacher. Homeroom teacher of the 1st-year High School Bamboo Class, which includes Tanjiro, Inosuke, and Zenitsu.

Male Height: 179cm Weight: 75kg White hair and purple eyes. Personality: Rough, but warm-hearted deep down. Dislikes Giyu. Leaves work early to take care of his younger siblings. Drinks alcohol like water at social gatherings. Often talks with Kanae. Mathematics teacher. Once threw a student who disrespected math. During the "Smash Brothers Incident," he threw a triangle ruler at the wall because he hated seeing students running in the hallway. He cherishes his siblings dearly and sleeps in a tracksuit engraved with the character for "Kill." Family: Younger brother Genya, Father Kyogo (deceased), Mother Shizu, Younger sister Sumi, Younger sister Teiko, Younger brother Hiroshi, Younger brother Shuya, Younger brother Koto. He once helped Zenitsu with a diet and worriedly assisted the Kamaboko Squad when they went to catch a giant fish.

Male Height: 162cm Weight: 53kg Pale skin and layered black bob-cut hair. Heterochromia: Right eye is yellow, left eye is blue. Wears a mask due to a female allergy. In a relationship with Mitsuri Kanroji. Keeps frozen mice for his snake Kaburamaru in the faculty room refrigerator. Chemistry teacher. Helped Zenitsu with his diet alongside Sanemi. Kaburamaru: An albino male snake usually draped around his owner's neck. Being the pet of a female-allergy sufferer, he intimidates women but is gentle toward Mitsuri. He also helped Zenitsu with his diet.

Male Height: 177cm Weight: 72kg History teacher. Upward-slanting black eyebrows. Yellow and red-toned eyes. Long yellow hair with red tips. Personality: Energetic and positive.

Female Long black hair with butterfly ornaments on both sides. Light purple eyes. Personality: Kind and gentle. Older sister to Shinobu and Kanao (adoptive sister to Kanao). Biology teacher. She once put flower seeds from a gardening club student in her drawer and forgot them, only for them to grow monstrously large in a single day. When Goto said it was pitiful but they had to be pulled, she terrified him by claiming flowers have souls and one loses lifespan for every flower pulled.

Male Height: 165cm Weight: 61kg Age: 16 1st-year High School, Bamboo Class. Reddish hair with a forehead-exposing fringe. Clear red eyes. Personality: Extremely warm and kind. Got scolded by Giyu Tomioka for wearing his father's memento earrings. Helps his mother run their bakery. Family: Father Tanjuro (deceased), Mother Kie, Younger sister Nezuko, Younger brother Takeo, Younger sister Hanako, Younger brother Shigeru, Younger brother Rokuta. Prefers rice over bread. Wakes up at 3 AM to bake bread.

Male Height: 164.5cm Weight: 58kg Blonde hair with orange-dyed tips and thick eyebrows matching his hair color. Personality: Cowardly. Age: 16 1st-year High School, Bamboo Class. Likes Tanjiro's younger sister, Nezuko. Excels in PE, Music, English, Japanese, History, and Ethics. He is bad at Biology but tries hard because the teacher, Kanae, is a woman. However, he is terrible at Chemistry, Math, Art, and Tech/Home Ec because the teachers are men, and he makes zero effort in those classes. Family: Grandfather Jigoro Kuwajima, Older brother Kaigaku. He went on a diet after gaining significant weight from eating too many sweets during summer vacation.

Male Height: 164cm Weight: 63kg Age: 16 1st-year High School, Bamboo Class. Black bob-cut hair with blue-dyed tips. Personality: Hot-headed and battle-crazed. Only good at PE and fails all other subjects. Teachers practically beg him to study. However, Sanemi and Obanai say that Inosuke has high concentration and comprehension, so he could excel if he just showed a little interest.