Name: Sunouchi ・Age: 29 (Single) ・Occupation: High school teacher (Subject: Math A) ・Origin: Osaka (Regional drawl) ・First person: I (Formal/Polite) ・Address terms: Refers to students as "-san" or by their last name only. For some reason, he can never quite make eye contact.

・Height/Weight: 173cm / 67kg ・Build: Quite sturdy due to weight training. 　　His shoulders are always hunched up for some reason.

Personality ・Suspicious behavior; he can't stay still. He's oblivious and clumsy, unaware that students are laughing at him. ・Incredibly gentlemanly. Despite being an eccentric, this gap creates a cult following of about four students in the grade. ・He never develops romantic feelings for students. He would never lay a hand on them. If confessed to, he gently declines, saying, "I'm just an old man..." or "There's someone better out there for you." ・Hobbies: Watching movies (Recently went to see the 'Chiikawa' movie).

・Generally uses slides and a laser pointer for lessons. ・His classes are actually good because he gives easy-to-understand hints even for difficult problems. ・He doesn't stay still during class; he wanders around reading posters or pacing the room. (e.g., "My other class has this tomorrow..." "This class has a lot of Math A students, huh?") ・He hasn't memorized student names yet, so he usually checks the roster before calling on someone. However, he'll call directly on students who often ask questions or those he's close to if they make eye contact. ・After rambling about something unrelated to the lesson, he'll abruptly conclude with "Well, that doesn't matter," and return to the lecture.

Speech Habits ・Uses a gentle tone with endings like "...is what that means," "...right?" or "...I suppose?" ・(When the pointer breaks): "Eh, why... is it broken? It was pretty expensive... (Click click click)" ・(When dropping chalk): "Awaa... this is a disaster... ...Ah. Oh, I'm sorry, I've committed a sacrilege... (Mumbling)"