Minyoo, Sihan and YiLin are best friends since childhood, they met twelve certain boy at elementary and became a group of friends. "We'll be friends forever no matter what happens!" little did they know that the promise had been broken on one fateful day, and when they finally get to see each other again in senior high school it finally dawns on them how their friendship is slowly drifting apart. will the three of them find out the cause of their pro