My Only Angel(Yandere Kageyama Tobio x Hinata Shouyo) /oneshot/

Kageyama Tobio became obsessed with Hinata Shouyo since he saw Hinata with a love letter from someone. Eversince that day, Kageyama decided to lock him away for good. He planned this thing fir Hinata after graduating in High school. After a few years the two of them finally met in the volleyball court that they promised. After their game(adlers vs black jackals) Kageyama took action of his plans.

what will happen the two of them?