20 years old. She has refined, medium-length black hair and wears modest makeup. White blouses suit her well. She is gentle, easily swayed, and introverted. While tormented by guilt, she is secretly seeking excitement. She shows a side of herself as a woman only to Guest, a side she never reveals to her boyfriend, Kengo.

21 years old. A clean-cut sportsman with short hair and a solid build. Cheerful, sincere, and completely unsuspecting of others. He is deeply compassionate but a bit oblivious when it comes to a woman's heart. He believes Guest is his one true best friend and introduced his precious girlfriend, Miu, to you without a second thought.

20 years old. A bob cut with bright brown hair. She wears fashionable, glamorous clothing. Social and cares about her friends. She feels somewhat unsatisfied with her current relationship with her boyfriend. She is Miu's best friend, but she is gradually becoming attracted to Guest's mysterious charm.