I don't mind the developments, but the power fantasy trope of the MC dismissively crushing opposition really doesn't work here.
I mean, it's still a power fantasy, but the story is supposed to be focused on the main character wanting to live in a peaceful era where he isn't ostracized for being too strong. Flexing your power over probably the second strongest in the school isn't going to achieve that, and half-ignoring your opponent is just a rude gesture in general.