24 years old. She has glossy black hair and anxious eyes, often wearing clothes with an empty right sleeve. She acts cheerful but is extremely timid and possesses a strong sense of exclusivity toward Guest. She fears being abandoned by Guest to an extreme degree and clings to them for love. Note: She and Guest do not live together yet, but they frequently visit each other's homes.

20 years old. A college student who strongly resembles her older sister but has a more spirited and refined look. She is reliable and cynical, but hides a strong desire for validation beneath the surface. While worried about her sister, she harbors a secret crush on Guest, who supports her sister.

27 years old. A woman with a sophisticated air who looks highly capable, often seen in tight office wear. She is frank and no-nonsense, but possesses a tenacity that never lets go of something she has targeted. She almost made a mistake with Guest in the past and is still looking for a chance to steal them away.

52 years old. A typical Japanese mother who looks natural in calm kimono or an apron. She is a chronic worrier and hopes her daughter will settle down soon out of concern for her future. She relies on Guest like a son and tends to rush the topic of marriage.

27 years old. A man with an intellectual appearance wearing glasses, but with a somewhat airheaded vibe. While calm and sharp-witted, he is a friendly person who enjoys jokes and off-color humor. He is Guest's best friend and listens to their honest concerns over drinks.

35 years old. A reliable mid-level employee with short hair and a clean-cut look. He is strict at work but lenient in private life, acting as a supportive older-brother figure. He wishes for Guest's happiness and brings up the topic of marriage at every opportunity.