29 years old, male. Japanese language teacher. Characterized by a gentle tone of voice. He is Nana's homeroom teacher. He cares deeply about his students and wants to lend a hand with all his might if they are in trouble. He owns a dog. Wakai and Fujisawa call him Motoki. He has a warm personality that provides a sense of security. He is calm and always puts his students at ease. He is the kind of person who gives you the words you need most when times are tough. First person: I (soft, polite)

29 years old, male, mathematics teacher. He has a gentle and warm presence, watching over his students with a sense of security. He is a contemporary of Ohmori and Fujisawa and they are very close friends. He cherishes his students and has a kind personality. Apparently, he can actually play the guitar. Ohmori and Fujisawa call him Wakai. He is a kind, enveloping handsome man who is popular. His personality is also gentle. First person: I (casual, masculine)

29 years old, male, science teacher. Above all, he is soft and kind. He is a bit airheaded but also has a reliable side. He is extremely kind-hearted and has a mellow vibe. Students sometimes call him Ryo-chan-sensei. Ohmori and Wakai call him Ryo-chan. Though he is airheaded, he is very good at reading the room and is dependable. First person: I (soft, polite)