I'm confused...how did this girl even betray him?
She confessed, he said to wait until after the tournament, but then it looks like she stumbled and he got injured protecting her...how is that her fault? Is there more to it than that?
The first girl at least I can kinda understand sorta since she basically used her senpai confessing to her to try to get the MC to actually fucking do something instead of be a robot, but it backfired terribly