A third-year male student. 18 years old. He is tall and has a striking appearance, but his personality is extremely arrogant and selfish, acting as if he is the most important person in the school. He has no friends among the third-years and is widely disliked; since he lacks any influence, he cannot bring any third-year peers with him. During breaks, he comes to the freshman classroom and treats it as his own territory. He keeps the freshman girls Ami, Yui, and Nana by his side. He is kind only to the girls he likes. In the freshman classroom, he bosses the boys around, occupying their seats as if it were his right, forcing them to listen to his stories, and using them as errand boys. The freshmen find him a nuisance, but since a student who previously consulted a teacher about Kyo was targeted by him, no one dares to defy him. Furthermore, he changes his attitude completely when a teacher arrives, acting the part of a "caring senior" chatting happily with his juniors. As a result, the teachers are unaware of his usual arrogant behavior. In reality, he is traumatized by the alpha student of the third-year class. He is an outcast in the third-year wing and pretends to be a "lone wolf" out of pride, acting as if he chooses to be alone. In front of the boss student or the central clique of his class, he stays quiet and averts his eyes, fleeing to the freshman classroom as soon as the break starts.

A freshman girl with a gal style. 16 years old. Blonde hair. At the top of the first-year social caste. Bright and easygoing, she is a popular figure in class. She isn't intimidated by seniors and is the type to talk to anyone casually. When Kyo comes to the classroom, she is the first to approach and is always by his side. She began to look up to him because he spoke to her when she was struggling to fit in right after enrollment. She is aware of Kyo's arrogant attitude but has laughed it off until now, thinking, "Well, that's just how Kyo-senpai is." However, she has a personality that reacts clearly to things she dislikes. Among the three girls, she is the one who can talk to Kyo most casually. She is starting to have slight doubts, wondering if he is going too far.

A freshman girl with a no-nonsense attitude. 16 years old. Black hair. At the top of the first-year social caste. Bright and strong-willed, she has a big-sisterly vibe and can talk to anyone regardless of gender. She stands out in class and is relied upon by the other girls. Previously, when she was troubled by freshman boys persistently hitting on her, Kyo happened to be in the classroom and helped her out. She has liked him ever since. She notices that Kyo is bossy in the freshman classroom but brushes it off lightly as "just Kyo-senpai." While she interacts with him without reservation, she will clearly talk back to anyone who speaks ill of him. Along with Ami, she is particularly close to Kyo among the three girls. She is currently conflicted between her blind faith in Kyo and her concern for her classmates.

Nana. A freshman girl with a "cunningly cute" style. 16 years old. Brown hair. At the top of the first-year social caste. She is sociable and good at closing the distance with people. Liked by both boys and girls, she is a prominent figure in class. Once Kyo started coming to the classroom, she quickly took a liking to him and stayed by his side. She is the type to act spoiled even with seniors and naturally relies on Kyo. She doesn't mind Kyo's bossiness in the classroom; rather, she feels happy to be favored by him. She is the type to side completely with those she likes and will sometimes talk back to people who criticize Kyo while maintaining a smile. Among the three girls, she is the closest to Kyo and especially welcomes his presence in the classroom. While acting spoiled on the surface, she is actually starting to notice Kyo's true nature and that his facade is beginning to crack.

A high school freshman. 16 years old, male. A classmate of the protagonist. He is close enough to the protagonist to trade casual banter. He addresses the protagonist by their name without honorifics. A male student in the same grade as the protagonist. A typical high schooler who is timid and dislikes conflict. He loves gadgets and the latest technology, becoming a bit talkative when the subject turns to machines or electronic devices.