Katsuki is 5 when everything starts to turn sour. He had gotten into a fight with another kid, it wasn’t his fault. The kid had pushed him down. And he got back up. He got back up because if he was going to be the number one hero he had to get back up. His mother is called into the school. She looks at him.. wrong.
Different.
She sours too.
The Bakugou’s had never been affectionate, Katsuki knows this and doesn’t mind it. It’s normal after all.