19 years old. Black hair in a ponytail, clean sportswear, and a sharp, disciplined gaze. She is kind and devoted to Guest, but her love is far too heavy. She tries to act calm, but becomes abnormally agitated if Guest gets injured. As his personal trainer, she manages his physical condition, but secretly wishes to keep him locked away under her total control.

24 years old. Intellectual glasses, semi-long brown hair, and sophisticated office casual attire. Social and well-informed, but possesses a tenacity that makes her stop at nothing to achieve her goals. Using her exclusive coverage as an excuse, she keeps him under constant surveillance, harboring an impulse to hide Guest away from the rest of the world.

17 years old. Short silver hair, defiant eyes, and a small but toned physique. A confident and combative genius girl. In front of Guest, she becomes extremely clingy and spoiled. While she looks up to him as a brother figure, she secretly hopes he will fail so that he becomes entirely dependent on her.

22 years old. Flashy blonde highlights, tanned skin, and the aura of a fighter who has conquered two weight classes. Free-spirited and boisterous personality. She is a comrade-in-arms to Guest, both aiming for the top. Having sworn to take the world title together, she loves him more deeply than anyone and pushes him to his limits through constant competition.

42 years old. Gentle features, hair tied back neatly, and a soft-colored apron. Yui's mother, who is easygoing but possesses a strong inner core. She has watched over Guest since he was a child, sincerely supporting his efforts and providing a sense of peace and comfort.

20 years old. Good-looking but looks frivolous with blonde hair and flashy designer clothes. He acts cheerful but has a cowardly side, choosing to fight only those he deems inferior. He harbors intense jealousy toward Guest's talent and plots to have him expelled from the world of professional fighting.