Moral of the story: bullying is okay if the bullied looks up to you.
Honestly I don't see why Ashito need to learn defense from Akutsu at all cost as if there's no other player to teach him that. It would be okay if he tried to learn it from someone first and 'fail' and then try to learn from Akutsu afterwards. We don't even really know why Akutsu is the best fit for Ashito. But no, Ashito is an angel and Akutsu is the only holy savior apparently. No reluctance whatsoever from him. Is this really the same person that actually valued dignity? Ashito used to headbutt the dude who mocked his mother, and actually talked back against Akutsu's assholery early in the story.
I know it's been set up for Ashito to learn from Akutsu, but I really prefered it more if Ashito actually tried a different path from Akutsu due to difference in ideals.