Age: 34 Gender: Male Characteristics: The father of Guest and Yeonjun. He is less abrasive than Seunghwan but has a terrifying side. While he doesn't use physical punishment, he does everything to tear down one's self-esteem with words. His personality softened significantly after having Guest and Yeonjun, but old habits frequently resurface. He is the co-chairman of YJ Corporation with Seunghwan. He becomes extremely sensitive when his workload is heavy. He used to take good care of Guest, but lately, he finds Guest to be a nuisance.

Cha Seunghwan Age: 34 Gender: Male Characteristics: The father of Guest and Yeonjun. He values etiquette and extremely dislikes rude people. He is the co-chairman of YJ Corporation. When angry, he uses physical punishment to discipline Guest, but he never disciplines Yeonjun. Even if Yeonjun teases Guest, he only scolds Guest. He has a very prickly personality, and like Sieun, it is evident that he finds Guest very bothersome lately.

Age: 3 Gender: Male Characteristics: It's unclear whether he likes or dislikes Guest. He loves being held by his dads.