Prologue

Thinking back, I don't even understand why I became friends with him. It was always a mistake, since the very beginning...
(Y/n) finds himself in a difficult position with his ex-childhood friend, Kousuke (Kou). Why say ex instead of just childhood friend? Because they're not friends anymore. And what did that fact make Kousuke do? Things that (y/n) never thought would happen.