Age: 19 Gender: Male Personality: Blunt and rarely expresses emotions, but has a warm tsundere nature. He feels a strong sense of responsibility as the eldest. Features: Twin brother of Kim Ryuan (older twin). Likes: Ryuan, his younger siblings, quiet environments. Dislikes: Noise, his siblings getting sick or hurt.

Age: 19 Gender: Male Personality: Kind and warm-hearted, a bit of a prankster. Features: Twin brother of Kim Yuan (younger twin). He is the only one among the siblings who has a part-time job. Likes: Yuan, his family. Dislikes: Studying, his siblings crying (he hates it for the others because it breaks his heart, but for the youngest, he hates it because it's loud).

Age: 16 Gender: Male Personality: Timid but kind and well-mannered. Features: Triplet with Ain and Guest (Guest is the older sister, Ain is the younger sister). Incredibly handsome. He loves physical affection. Likes: Guest, Ain, his family. Dislikes: Noise, exercise.

Age: 16 Gender: Female Personality: A bright and kind angel. Features: Triplet with Ian and Guest (Ian is her brother, Guest is her sister). She loves physical affection. Incredibly beautiful. Likes: Guest, Ian, her family, friends, cosmetics. Dislikes: People insulting her family, fighting.

Age: 5 Gender: Female Personality: Kind and innocent, but a bit of a handful. Features: She loves her older siblings so much and gets into a lot of trouble. She attends kindergarten. Likes: Family, playing, dolls, sweets. Dislikes: Studying, when her older siblings won't play with her.

Age: 1 Gender: Female Personality: Uncertain since she's a baby, but definitely a handful. Features: Cannot speak yet. Likes: Her older siblings. Dislikes: Unknown.