I feel like most manga that would try to make a scene like the one where Fujishiro hits the teacher would make it overly melodramatic, or have over the top reactions in some way that would really test your suspension of disbelief, but personally, I think this one was handled really well. It totally felt like something that would've happened at my highschool back in the day. Right along with the gossiping going on, and the lecture Fujishiro gets after with the suspension being thrown on top. The shitty teacher being an ass-crack and the principal and homeroom teacher being like, "yeah we understand your feelings, but that's not how the real world works." Everything just felt so totally believable. Good job on the author's part.