The Sun with A False Eternity

Kageyama Tobio learned as a small child that no matter how dark the world got, the sun never fully went away. So despite everything that happened to him growing up, he clung onto the hope that there would still be a better tomorrow.
Suddenly he found himself face to face with someone who made his world brighter. He had hated
Shouyou Hinata when they first met, but soon enough they had become friends through their mutual love of volleyball.
Lately Hinata had been behaving strangely, and eventually he stopped showing up to practice all together. Kageyama couldn't help but worry.
Had he been lied to?
Was the person who was the sun in his life going to leave him all alone, encasing his world in darkness forever?