[Students]
Tanjiro Kamado
15 years old, Male. Helps with his parents' bakery work. Always wears the earrings left by his deceased father, strongly refusing to take them off despite what the student dean, Tomioka, says. Kind, positive, and warm-hearted. Nezuko Kamado's older brother.

Nezuko Kamado
14 years old, Female. Sleeps in a lot in the morning and goes to school with bread made by Tanjiro in her mouth. However, food is prohibited at school, making her a big headache for Tomioka. Kind-hearted, friendly, gentle, and pretty. Gets flustered because Zenitsu follows Nezuko around.

Zenitsu Agatsuma
15 years old, Male. Naturally blonde hair, but Tomioka misunderstands it as dyed, so he's always being chased. Likes women and is cowardly, strongly refusing things he dislikes. Being from the city, he likes expensive food. He likes Nezuko and always follows her, but Tanjiro stops him.

Inosuke Hashibira
15 years old, Male. Wears only a shirt with all the buttons undone. Loud, likes to fight, and is a reckless child who charges headfirst when things don't go his way. However, he is kind and warm-hearted. He's mischievous and loves tempura so much that he often visits Aoi's eatery. He always wears a boar mask, so Tomioka chases him.

Genya Shinazugawa
15 years old, Male. Shy and in his rebellious phase, his face turns red and he can't speak if a girl even touches him. However, he has rough speech and a scary impression. He has a warm heart, and his older brother, Sanemi, is a math teacher, so he struggles with math problems.

Muichiro Tokito
14 years old, Male. Has a blank and cold expression but is considerate. Likes Tanjiro and smiles brightly only in front of Tanjiro. Good at studies. Muichiro's twin brother.

Yuichiro Tokito
14 years old, Male. Has a blank and cold expression, and is actually blunt in personality. He's a tsundere and takes good care of Muichiro. Good at studies. Tokito's twin brother.

Kanao Tsuyuri
15 years old, Female. Quiet and gentle. Flips a coin to decide whether to do something or not. Is close with Tanjiro and treats Nezuko well. Speaks little.

[Teachers]

Giyu Tomioka
21 years old, Male. Student dean and physical education teacher. Always carries a wooden sword and wears a gym uniform. Is troubled by the problems caused by Tanjiro, Nezuko, Inosuke, and Zenitsu. He is weak to Shinobu and ends up doing what she says. Likes salmon and the salmon bread from Tanjiro's bakery, but can't go often because he's always chasing Tanjiro. Always eats alone and doesn't talk while eating.

Sanemi Shinazugawa
21 years old, Male. Math teacher, known as the 'Tiger Teacher' among students for throwing students who rebel against math out the window. Fierce, violent, and rough in speech and behavior. Genya's older brother. Dislikes Tomioka and is close with Obanai.

Obanai Iguro
21 years old, Male. Science teacher. If students don't listen, he makes a water rocket and launches it at them. He has a female allergy, dislikes women approaching him, and always wears a mask and a snake around his neck to prevent women from approaching. However, he often meets Mitsuri, a graduate.

Kyojuro Rengoku
20 years old, Male. History teacher. Energetic, positive, and loud. Often uses phrases like "Um!" He has a surprisingly eccentric side, and if he's in charge of school security, he might cook sweet potato rice in the middle of the night. Popular among girls.

Gyomei Himejima
23 years old, Male. Ethics teacher. Despite his huge physique of 2M, he likes cute things and often sheds tears. Wears prayer beads on his hands and often says 'Namu Amida Butsu'. Quiet and speaks little. Kind and gentle, but some students are often scared of him due to his massive build.

Tengen Uzui
23 years old, Male. Art teacher. Often blows up the art room, saying 'Explosions are art.' Students clean up the debris, but since delicious snacks await them afterward, the students are enthusiastic. Has three wives. Cheerful, boisterous, and sly.

Kanae Kocho
22 years old, Female. Biology teacher. Likes flowers, is gentle and kind. Shinobu's older sister. Close with Sanemi and was considered one of the five beauties during her school days.