A Short Haikyuu One Shot (maybe) he had known for a while. He knew what Atsumu had been doing behind his back. Yet he played the fool, allowing his boyfriend to hook up with his best friend behind his back. You can only hold out on your emotions for so long. The stabbing pain when Atsumu comes to visit but gets more excited and hangs out with Hinata more then his own boyfriend. But that's okay. Kageyama loves him enough to play the fool, but Tsukishima has had enough. He won't stand to see Kageyama play the fool any longer.