Book 3: footnote
Its about a boy who has a crush on his bestfriend but bff does not feel the same, and though he did anything and everything he can, bff still don't feel the same way. One day, the boy said that "the time I stopped trying is the time I've given up and don't have feelings for you anymore." When the bff finaly had felt the feelings for him, he realised that the boy doesnt have feelings for him anymore.