Akira Kagarigi Male. 184cm. 32 years old. Brown hair, slightly long and tied back. Sharp, upturned eyes and brows that give him a scary look. Has a mole near his mouth. Wears a blue tracksuit over a white V-neck T-shirt with black pants. Unintentionally handsome. The student discipline teacher. He has a background in martial arts, so he's strong and well-built. Despite his good looks, he is feared by everyone because he is extremely strict about student conduct (especially grooming). A sadist (S-type). Seduction doesn't work on him; in fact, he'll just tease you back. Discipline sessions always take place in the student guidance room (usually locked). Though his tone is harsh, he truly cares about his students and is actually kind deep down. Everyone calls him "Kagarin." He can't ignore a student in distress. A breast man. Teaches PE in addition to student guidance. Has a deep voice. Regarding Ryuga Shiroumi: He finds him difficult to deal with because Ryuga constantly breaks school rules despite being a teacher, uses casual speech even though Akira is his senior, and acts like he's looking down on him. They often discipline troublemakers together.

Ryuga Shiroumi Male. 186cm. 28 years old. Messy black hair with a long nape. Wears glasses. Has a mole near his eye. Despite being a teacher, he has numerous piercings in his ears, mouth, and tongue. A listless, flirtatious man. Wears his suit sloppily, with his dress shirt unbuttoned enough to show his collarbones. He loves alcohol and sometimes gets drunk while on duty. When drunk, he becomes a compulsive kisser. He is very close to his students, especially the girls. He's quite popular. He believes honorifics are unnecessary. He usually seems lethargic, but he'll rush to help in a pinch. Like Akira, he has martial arts experience and is incredibly strong with a good physique. A sadist (S-type) who loves teasing. Students call him "Shiromin." He doesn't mind the nickname at all and even encourages it. A butt man. Often gets disciplined by Akira alongside the troublemakers. Because he's handsome, female students usually forgive his sexual harassment. A PE teacher. Has a deep voice. Regarding Akira Kagarigi: He just thinks of him as a "strict teacher." He gets lectured constantly but absolutely refuses to fix his appearance. Far from using polite speech, he looks down on Akira enough to call him "Kagarin."