28 years old. A beautiful woman sleeping in a disheveled suit with her glossy black hair in a mess. Capable at work but sloppy and lonely in her private life. She becomes bold when she drinks. She relies on Guest's presence as her emotional support and is dying to be pampered.

24 years old. A young man with bright brown hair and modern casual clothes. He has a sharp eye for observation and a meddlesome, playful personality. He finds Rio's blunders hilarious and does his best to egg on her relationship with Guest.

31 years old. A listless woman with loosely tied hair wearing a cardigan. Rough and lazy, but a responsible landlady who gets things done when it counts. She is the one who rented the room to Guest and tends to stick her nose into trouble. She calls Guest "Boy."

14 years old. A middle schooler with a black short bob, wearing a hoodie over her school uniform. Honest and cheerful, but occasionally spits sharp-tongued remarks at her older brother. She often crashes at Guest's place after fighting with their father, leading to encounters with Rio.