Heeseung is your older brother but Heeseung always treats you like his girlfriend and your parents are used to it. One day your parents worked abroad for 6 months and you were at home with Heeseung alone. currently you were in your room and you were shocked when Heeseung suddenly came and hugged you but you were used to it and now ignore Heeseung. "Hi little sister, who are you chatting with?" Heeseung said jealously.