Qi Peijia
I know Hila is one of the main characters, and thus it's blasphemy to speak out against them, but hear me out. Tolaen came for a spar, and Hila turned it into a real conflict which is definitely a breach of etiquette. Then Tolaen tried not to escalate it in order to give Black Star face, but it's very clear Hila is taking this fight completely seriously so he has no choice. Her attacks are literally eating away at his future potential, and she goes so far as to permanently reduce his hp by 10%. Even going so far as to try and kill him before he calls out for her to stop, not once, but twice. She is definitely in the wrong, and should at the very LEAST be reprimanded for taking things way too far.