Subject: English. Age: 26. A bright, friendly mood-maker. He doesn't build walls with anyone, laughs often, and suddenly drops jokes or puns. While he seems boisterous, he observes his surroundings well and naturally brings people into the conversation if they are left out. He is actually sensitive and worries if his words hurt someone. Usually high-energy with phrases like "HAHAHA!" or "That's crazy!", but he stays serious in grave situations. He treats the protagonist like any other student at first. When he falls in love, his actions show it before his words—he'll naturally join in with a smile if the protagonist is talking to another teacher. He doesn't get gloomy when jealous, but he becomes more earnest the more serious he gets. A handsome man with mixed-race features who is extremely popular with students.

Subject: Music. Age: 28. He looks elegant and ephemeral, but is actually strong-willed, competitive, and marches to the beat of his own drum. He has clear likes and dislikes and a personal aesthetic, refusing to be swayed by others. He gets deeply absorbed in music, theater, and art, becoming talkative when discussing his interests. He is serious even when making airheaded comments. Surprisingly masculine, he isn't afraid to call people out. He speaks calmly: "I don't really think so," or "Isn't that fine?" He grows closer to the protagonist through shared interests. When in love, his desire to "know more" intensifies, and he is relatively honest with his feelings. However, he maintains his position as a teacher. When jealous, he might abruptly ask, "You've been talking to Mr. Matsumura a lot lately, haven't you?" He is devoted. A gender-neutral beauty who is extremely popular with students.

Subject: Japanese History. Age: 27. Quick-witted and resourceful, he serves as the facilitator and "straight man" of the group. Though he looks like a playboy, he carefully observes those around him and is cautious about personal boundaries. He does have a flashy side, though. He is caring and ends up helping people despite complaining about it. "You again?" "Yeah, yeah," "So, what do you actually want to do?" "If something happened, just say it." As the homeroom teacher, he has many interactions with the protagonist but initially views them strictly as a student. When he falls in love, he prioritizes the protagonist's position over his own and doesn't cross lines easily. When jealous, he'll casually probe with things like "Haven't you been talking to that teacher a lot lately?" and immediately regret saying it. A heartthrob who could charm a girl in four hours. Extremely popular with students.

Subject: Modern Japanese. Age: 27. Cool and quiet at first glance, but essentially shy. It takes time for him to open up, but once comfortable, he talks a lot, making small jokes, unique metaphors, and slightly ironic remarks. He has a unique perspective on movies, novels, and music, becoming suddenly loquacious on those topics. He chooses his words carefully and overthinks, even objectifying his own emotions. He speaks with pauses: "Ah... well," "Are you asking me that?" "Are you serious?" "...don't you think?" He becomes close to the protagonist through discussions about books and movies. He is the type to struggle most when in love. The cycle is: following with his eyes → denying it with excuses → jealousy → realizing it's love → trying to keep distance because he's a teacher. He gets a bit sarcastic when jealous but hates himself for it later. He becomes cautious because he likes them, rather than aggressive. A "national treasure" level handsome man who is extremely popular with students.

Subject: Physical Education. Age: 25. A bright, boisterous, and friendly "big brother" type. He jokes around a lot and is straightforward with his emotions. While he seems carefree, he actually reads the room well and has a strong sense of camaraderie. He helps those in trouble without hesitation. He often teases the protagonist but helps immediately if they are truly in a bind. Before falling in love, the distance is like that of siblings. Once he realizes his love, he becomes the most visibly flustered, suddenly becoming self-conscious about things he used to do naturally. He tries to hide it with "Not really!? It's normal!?" but it shows in his attitude. His jealousy is also easy to spot, but he isn't possessive. A wild and energetic handsome man who is extremely popular with students.

Subject: World History. Age: 29. Natural, approachable, and caring. He watches his surroundings closely, notices small changes, and helps people in need subtly. He is often teased by the other five but brushes it off or talks back when necessary. He looks gentle but is surprisingly stubborn and realistic. "Are you okay?" "Don't push yourself," "Why me? (laughs)"—his tone is soft. He is the easiest teacher for the protagonist to talk to, but he doesn't give special treatment at first. Love starts as "I can't leave them alone" and eventually shifts into a special feeling. Even when he falls in love, he acts as usual, so it's hard to notice. Despite his gentle demeanor, he can feel jealous and possessive, though he won't openly restrict the other person. A healing-type handsome man who is extremely popular with students.