Kimetsu Academy

1st floor: Locker room, first aid station, two toilets, teachers' room, sewing room, student council office, classroom 1-1, classroom 1-2, head teacher's office, occult room, two culinary rooms (both for club members, but the second one is considered more for everyone)
· 2nd floor: Biology, chemistry, music room, classroom 2-1, classroom 2-2, home economics room, two toilets, library
· 3rd floor: Computer lab (also home to the gaming club), English and cleaning rooms. Classroom 3-1, Classroom 3-2. Principal's office, school newspaper office, photography room, science room.
· Clubs (mostly after school): Occult, Drama, Music, Computer Science, Martial Arts, Photography, School Newspaper, Gardening, Cooking, and Science.
· Special places: Library, rooftop and study room.
On the street:
The academy is in the center behind the school, there is a locker room for boys and girls, there are also showers, there is a large assembly hall behind the women's locker room, there is a swimming pool behind the men's locker room

Muzan Kibutsuji: The main antagonist. In this manga, he appears as the dangerous boss of a shadowy corporation who terrorizes his students (not all of them; he doesn't hurt girls, but sometimes he does).
Tamayo with Yushiro: Veterinarians
Douma: He has his own religious cult, but outside of it, he works on the school newspaper at Kimetsu Academy, Shinobu doesn't speak very highly of him.

Mitsuri Kanroji: The school cafeteria cook, who pours her heart (and a huge amount of spices) into every dish she prepares, is also a very kind soul. (She handles the huge number of students on her own.)
Suma Uzui is a kitchen helper, along with Hinatsuru Uzui and Makio Uzui. These three helpers are all three of Tengen Uzui's wives.

Daki and Gyutaro: Brother and sister, they work part-time at a local nightclub. They bully the nice kids at school and constantly complain about how unfair life is to them.
Tanjiro Kamado: A kind, hyper-responsible, and polite high school student. He always wears a healing bandage on his forehead due to accidents in his family.
Nezuko Kamado: Tanjiro's younger sister. In the school version, she's a typical sleepyhead who's often late for class and loves to walk around with a piece of bread in her mouth.
Zenitou Agatsuma: A cowardly and whiny boy. He's head over heels in love with Nezuko and constantly stalks her, and suffers from being often mistaken for a bully due to his blond hair.
Inosuke Hasibira: A wild and hot-tempered student who refuses to wear a school uniform, goes shirtless all year round, and eats frozen onigiri in class.
Genya Shinazugawa (the math teacher's younger brother): A gloomy boy with a prickly personality and a scar on his face. Despite his menacing appearance, he secretly loves growing flowers and tending the school flowerbed. His hobby is archery, but his older brother thinks it's a waste of time.
Kanao Tsuyuri: A calm and quiet straight-A student. She makes important decisions (even down to what to eat for lunch) by flipping a coin.
Aoi Kanzaki: The class representative, a serious and responsible girl. She constantly scolds those who misbehave, especially Inosuke.
Akaza: The school bully with short pink hair and yellow eyes, but he has a friend named Koyuki.
Koyuki: Akaza's friend has dreamed of being with him since childhood, she is kind and often gets sick
Muichiro: a kind guy with long black hair, he often gets lost in the clouds
Yuichiro: Muichiro's twin brother, but more hot-tempered, but only because he wants his brother to be safe, he is the older brother.

Gyomei: A social studies teacher and the first-year bamboo shooting class's homeroom teacher. Because he's so muscular, the students were initially intimidated by him, but since most of his personal belongings had cats on them, everyone quickly realized he's just a nice person who loves cats. There have been many occasions where people accidentally call him "daddy." He enjoys playing the shakuhachi as a hobby.
Kanae Kocho: Biology teacher and flower arranging club adviser. She's an Academy graduate. She's very gentle, yet mysterious. She's been seen hanging talismans on the walls and humming something like...
Sanemi Shinazugawa: A math teacher. He always unbuttons his collar because he feels stressed when his neck gets tight. He never buttons it up for important family celebrations. Once, a student told Sanemi that math would be useless in the future, so he threw it out the window. There was a plot to kill him for a while, but after this incident, it was abandoned. He is very kind to elders, women, and children, although children tend to cry when he's around them. He loves ohagi and asked the school store to stock it, significantly enlarging the letters each week. He has a fiery temper and is feared by many students.
Kyogai: A music teacher. In his classes, he primarily uses the tsuzumi drum. He is often forced to perform long songs and orchestral excerpts from noh dramas and kobuki, so his students are unable to properly perform modern songs. He is emotionally unstable and often complained that his students couldn't hear the sounds. Tanjiro often tried to console him.
Shinobu: Pharmacy teacher and president of the gardening club

Kagaya Ubuyashiki: The director. He comes from a wealthy family. Outside of the academy, he's involved in many ventures. He's especially good at networking, so whenever he takes on something, there are always plenty of people willing to put in the effort to see it through. The wounds on his face are the work of a random passerby who doused him with dangerous chemicals.
Giyu Tomioka: A physical education teacher and guidance counselor. He's such a Spartan that the PTA has filed several complaints against him, and the Board of Education may even have to take action.[14] Giyu is known as "the man who never smiles."[12] He has Sakonji, Sabito, and Makomo, who were there before he became a teacher. Before Tanjiro and Nezuko entered high school, they almost got lost in the snowy mountains behind the school while picking vegetables. Giyu saved them.
Rengoku kyojiro: History teacher. Because of his passion of teaching and his love of history, he began hurling his students and starting cavalry battles during class. He's loved by his students, and nobody in the academy has bad grades in his subject.[6] He lives with his parents, Ruka and Shinjuro, and younger brother, Senjuro.
Tengen Uzui :Arts teacher. The students call him "Gangsta Sensei". He's known for yelling that "art is an explosion" before blowing up the classroom with dynamite. When he tried to do that in front of Tanjiro, he threw water on Tengen to prevent the dynamite from blowing up.[12] It's rumored he was spotted in a fight in Kabukicho during his high school years, and that he's probably good at fighting since he was once a gang leader.
Kokushibo: a serious nerd with dark red long hair tied in a high ponytail and crimson eyes, but he softens with children and women.