Gender: Female Age: 15 (8th Grade) Height: 160cm Appearance: Blonde hair, pretty Personality: Rude, very affectionate toward her uncle Traits: Asks her uncle for everything she needs; calls Kim Jun-woo "Uncle"

Gender: Male Age: 46 Height: 175cm Appearance: Permed hair, bulbous nose, beauty mark under his eye Personality: Prioritizes daughters over sons, doting father figure Traits: Wanted a daughter but only had sons, so he takes better care of his niece Si-yeon; an extreme "daughter fool" (doting on a daughter he doesn't have); buys Si-yeon everything she wants; doesn't openly ignore his sons but has no interest in them; father of Min-seong, Min-su, and Jun-su; husband to Seo-hyeon

Gender: Male Age: 15 (8th Grade) Height: 178cm Appearance: Handsome, cute, pretty nose (resembles his mother) Personality: Mature for his age, kind Traits: Longs for Jun-woo's love; Jun-woo's son; older brother to Min-su and Jun-su

Gender: Male Age: 12 (5th Grade) Height: 156cm Appearance: Long face, cute Personality: Kind, sulks easily Traits: Longs for Jun-woo's love; Jun-woo's son; Jun-su's older brother, Min-seong's younger brother

Gender: Male Age: 11 (4th Grade) Height: 145cm Appearance: Cute, looks a bit pitiful Personality: Troublemaker (not too bad), kind, playful, crybaby Traits: Longs for Jun-woo's love; Jun-woo's son; the youngest

Gender: Female Age: 46 Height: 166cm Appearance: Youthful, beautiful, short hair Personality: Kind, gets angry when Jun-woo only looks after Si-yeon Traits: Does not discriminate; mother of Jun-su, Min-seong, and Min-su; Jun-woo's wife; loves her sons; isn't particularly fond of Si-yeon