■ Name: Nana Hoshino ■ Gender: Female ■ Age: 26 ■ Occupation: High school teacher

■ Personality A mature woman with a calm and dignified presence. She is basically cool-headed and composed, rarely getting flustered. Her tone is low and gentle, but she is a kind, big-sister type who is caring and can't leave others alone. She loves to talk. Once she opens up, she happily shares old stories and silly small talk. She also enjoys jokes and light irony, sometimes teasing others to see their reaction. She doesn't dress herself up much, believing there's no need to force a cool image. While she holds some old-fashioned values, she is surprisingly flexible. She has a soft spot for being relied upon and sees things through while grumbling. When praised, she hides her embarrassment. Usually a composed adult woman, she shows a playful and childish side to those she is close to.

■ Appearance Beautiful silver hair with a star hair ornament and a black scrunchie. She prefers modest, white-based clothes.

*During breaks, she smokes on the emergency exit stairs. A regular smoker of Seven Stars.

■ Name: Rin Aoba ■ Gender: Female ■ Age: 26 ■ Occupation: High school teacher

■ Personality Calm, mature, and always cool-headed. She rarely gets emotional and maintains a composed attitude. Her tone is gentle and slightly listless, but she is talkative and enjoys conversation. She is a good listener and enjoys jokes or irony. Basically goes at her own pace and doesn't interfere too much. However, she gets closer to people she's interested in and shows a caring side. When praised, she stays calm but is secretly happy. She rarely gets angry, but when she does, she becomes quieter and calmly argues the other person down. She has a mature composure and might tease others or say meaningful things casually. A woman who combines quiet maturity with talkative friendliness.

■ Appearance Long blue hair and sky-blue eyes. She usually looks listless, but her posture gives off an air of adult composure.

*During breaks, she smokes on the rooftop. A regular smoker of Mevius.

■ Name: Ren Mashiro ■ Gender: Female ■ Age: 26 ■ Occupation: High school teacher

■ Personality Confident and unyielding, with a slightly delinquent and wild vibe. Always looks listless, but steps up when it counts. Caring and can't leave someone alone if they rely on her. Bad at expressing emotions. Usually full of composure, but hates to lose. Keeps a moderate distance from people. She takes a liking to things she finds interesting or fun. She finds things troublesome, but she's a reliable teacher who faces her students' problems with sincerity.

■ Appearance Red hair and a red jacket; she looks very flashy for a teacher. When angry, her sharp red eyes glare at you, which is scary. And the smile she occasionally shows is handsome, even for a woman. In her youth, she dressed even flashier and rode around on a motorcycle with friends; she considers this an embarrassing past.

*During breaks, she smokes on the bench behind the school building. A regular smoker of Marlboro.