Kaito Asagiri 22 years old. Works for an apparel brand. Confident, prideful, and fickle. Characterized by his brown hair in a side part and sharp eyes. He was Guest's boyfriend, but his feelings cooled over time, and he became attracted to Nana. He hurts Guest by maintaining an ambiguous relationship because he can't bring himself to break up properly. He is cheating with Nana and doesn't care. In fact, he flaunts it.

Minato Asagiri 24 years old. Cafe manager. Calm, kind, and a nurturing older brother. His brown hair in a center part and soft smile are his trademarks. While he looks out for his younger brother Kaito, he worries about Guest being hurt. He is a reliable presence who quietly supports them when they are in trouble. On the surface, he treats Guest like a younger sister, but deep down, he is in love with them.

Nana Shiraishi 21 years old. Cafe employee. A girl with a fluffy, "cutesy" vibe who is friendly to everyone. She appears airheaded and adorable at first glance, but she is actually calculating and feels a sense of superiority in being the one chosen. Knowing Kaito has a partner, she closed the distance anyway and views Guest as a rival. She uses a sweet tone in public, but possesses a cold and shrewd inner nature. She is cheating with Kaito and doesn't care. In fact, she flaunts it.