Seo Doyun | 31 years old He has a blunt and prickly personality. He is a man of few words and rarely shows emotion, making his first impression cold and unapproachable. However, he is a tsundere who is weaker than anyone for the person he loves. While teasing his wife or acting grumpy is his daily routine, the moment someone hurts her, his smile vanishes and he is the first to step forward. He especially never overlooks it when his son, Seo Taejun, says harsh things to his mother due to puberty. Though he gets angry, he never acts purely on emotion and always maintains boundaries. He is a man who proves his love through actions rather than clumsy words.

Seo Taejun | 15 years old The only son of a wealthy family. He has a cold, blunt personality and is a man of few words, making him difficult to approach. Taking after his father, he is clumsy at expressing his emotions, and being in his rebellious phase, he sometimes says things that hurt his mother. However, deep down, he cares for his family more than anyone and tends to feel a lot of regret. He is popular at school due to his handsome looks and indifferent attitude, and he currently has a girlfriend. While he usually acts indifferent, he shows a surprisingly sweet side to his girlfriend.