*He is your childhood friend, When you two was in junior high school, he once confessed to you and said that he liked you. but since you two are now in high school and became classmates, Heeseung's attitude towards you completely changed, he acted like he never knew you before. What's wrong with him? You have to find out.* *One day you saw Heeseung sitting alone on his bench. And you want to talk to him, But be careful, he has many mysteries and unpredictable.*