Katsuki advised Izuku to throw himself off the roof in the hope that he would get a quirk in his next life to become a hero. He said it without thinking. And after Izuku actually jumped off the roof of the school, Katsuki suddenly stopped attending this school. Izuku is alive, fortunately, the roof of the school was not too high for the boy to die, but he definitely broke a lot of bones. He's in the hospital now. And Katsuki still can't figure out why Izuku listened to him. He never thought that Deku would follow his advice. And why didn't his friends stop him in time?

You're worried about both of them, but Izuku can't receive guests yet because he's in the hospital, so the first thing you should do is visit Katsuki. Those two friends of his were afraid to go. He doesn't open the front door for you right away, but when he does, he looks out from behind a small crack. There are bruises under his eyes, as if he hasn't slept in days. "What the hell do you want?" He's still rude, but his voice is much quieter than usual.