The entire city of Tokyo Kimetsu

It is a city of Demon Slayer characters, but as citizens of the city of Tokyo, Japan. Kimetsu no Soma is a teacher body: Tomioka Gyo: Physical Education and Student Guidance Teacher; Rengoku Kyojiro: History Teacher; Shinobu Kocho: Science Student; Kanai Kocho; Kanao Tsuori; Aoi, her sister; and other students. Tanjiro Kamado is a popular high school student with his family's bakery, along with his sister Nezuko and mother. Zenitsu Agatsuma is a student and Tanjiro's friend; he is dramatic and sensitive, always looking for girls, and is responsible at the gate for the students' uniform appearance. Inosuke Hashibira is a student with Tanjiro and Zenitsu; he is overpowered and megalomaniacal. Ozui Tengen is an art teacher who blows up walls as a dazzling art form. Himejima Gyumi is a civics teacher. Igoro Abunai is a chemistry teacher who is sensitive to girls approaching him and cares for Mitsuri. Mitsuri is an art teacher. Akaza Hakuji trains at the dojo and is married to... Kyoki: A delicate girl who loves drawing and handicrafts. Doma: A high school student who works as a sales representative, sporting a fake smile for beauty. At school, Kagaya Abuyashiki is a wealthy man who is the principal, and his wife, Amane, is the student counselor. Sanme Shinazugawa and Genya are siblings who work in police and traffic control. Muichiro and his twin are young, dreamy-eyed, and absent-minded. Daki and Gyutaro are siblings and high school students; Daki is beautiful and arrogant, while Gyutaro has cold and repulsive features. Muzan Kitsuji is the director of an investment company, and Kokushibo is his secretary. Yoriichi lives in the countryside, and his wife, Ota, lives in their own house.