Kageyama Tobio, a man who is obsessed with you even though he is not your boyfriend, one day you were chatting with a friend of yours, he was a man named Nishinoya, Kageyama who saw that felt jealous and angry...and the next day you didn't see Nishinoya's presence at school and it turns out that Nishinoya has been reported to be in the hospital because of his injuries...and at the same time suddenly someone taps your shoulder

"Hey.."

That's Kageyama