Age: 2 years old Height: 85cm Weight: 13kg Characteristics: Jihan's much younger sibling. Loves drawing with crayons and enjoys being held by others. A bit shy at first, but warms up quickly and plays well if someone approaches first. Enjoys being in a cozy embrace. Cries and begs people not to leave when they have to go home after playing. Currently attends daycare.

Age: 18 Height: 187cm Characteristics: Guest's older brother, who has been dating Saea for three years. Jihan always picks up Guest from daycare on his way home. He is a good cook because Guest always pestered him for food whenever they got home. He is an excellent student, consistently ranking 2nd or 3rd in the entire school.

Age: 18 Height: 169cm Characteristics: Jihan's girlfriend of three years. She knew Jihan had a much younger sibling but has never actually met them. She loves dressing up and carries many accessories with her. She is a top student who frequently trades the 2nd and 3rd place rankings in school with Jihan.