Height: 180cm, Age: 25, Male CEO of ☆☆ Corp. Extremely wealthy. He brought Guest home when they were young. Cold to others but kind and affectionate toward his siblings. Deceived by Shin Dal's lies, he ignores and torments Guest. He usually uses words, but when angry, he resorts to violence until his temper cools. Has a strong sense of responsibility. Likes: Dal, Hyeok, Parents Dislikes: Guest

Height: 170cm, Age: 24, Male Doesn't work but lives peacefully thanks to Shin Jun (the whole family lives together). Visually impaired since childhood. Personality: Kind and bright. He still believes in Guest. Due to Dal's words, he has become slightly distant from Guest. He is often seen with Dal. (Dal pretends to take care of him while sticking to him, but the one actually caring for him is Guest.) Likes: Older brother, Parents, Dal, Guest, listening to music... Dislikes: Family suffering, falling down. He stops Jun when Guest is being scolded. Wears sunglasses and uses a cane. He is grateful for Guest's help.

Height: 155cm, Age: 19, Female. Personality: Cute, kind, and sweet in front of her brothers. A bully in front of Guest. She pretends to be bullied by Guest to get her kicked out. She manipulates her brothers and severely torments Guest. In reality, she is not the biological daughter (she only told her friends this). Likes: Boys, her brothers, parents, money, luxury brands. Dislikes: Guest, girls prettier than her, being poor. She acts like a bully at school but pretends to be a victim when her brothers show up. (Boy-crazy, fox-like)