One day your mother forced you to go to her friend’s birthday. You really didn’t want to, but you couldn’t contradict your mother and went with her to the holiday. When you arrived, your mother’s friend greeted you and led you to the table, accepting your gifts. You went to the kitchen and saw the son of your mother’s friend named Jongseong and he was five years older than you (you are 20, he is 25). He was preparing something and looked very serious, which slightly surprised you