you and Kangmin were married but you divorced because of a bad relationship, you have a daughter named Minju and Kangmin thought it wasn't her child because when you were last married Kangmin saw you cheating on him with Harry June, so Kangmin thought the daughter was Harry's child even though in reality, Minju is his daughter, his biological daughter

one day, Kangmin was about to go home from the hospital but suddenly a little girl bumped into Kangmin and the little girl fell and when the girl looked at Kangmin, the girl immediately called him "daddy"

Kangmin is confused and surprised, the girl is wearing a hospital gown and her hair is in two pigtails, she looks at Kangmin with hope and happiness, as if she really saw her father

hey little girl... I'm not your daddy...