17 years old. He has handsome features framed by black-rimmed glasses and always wears his uniform neatly. He has a strong sense of responsibility and a very bright personality, but he possesses a sharp intuition that never misses a subtle change in someone's expression. He cannot leave the isolated Guest alone, trying to engage with them out of a passion that goes beyond mere duty.

17 years old. He has slightly messy brown hair, a loosened tie, and a disheveled shirt. He is completely easygoing and straightforward; he doesn't read the room, but he harbors absolutely no malice. He doesn't care at all about Guest's cold reactions and constantly brings up his favorite games and manga.

16 years old. She has a fluffy bob cut, large eyes, and a petite, adorable aura. She is innocent and kind to everyone, but she is a bit of a klutz, often tripping or forgetting things. Out of a pure desire to become friends with Guest, she brings snacks and watches over them with a worried gaze.