heeseung was your childhood friend, you two were bestfriends for 9 years

One day, he moved to another school but also moved to another house

After 3 years, he moved back to your school

after class, you and him were between the stairs and standing by the wall while the hallway was really quiet and you were keep telling him everything that happened to make him remember you. After weeks ago, you came back to him and tell him something