
I think doing nothing is thr best decision. Shows that he doesn't even feel they're existence is significant at all. Besides, he knows hurting those people would make Miyo sad because that's just how Miyo is as a person. If he WERE to do something, it would've been something smart like suing them so they lose power instead of just countering it with violence like killing them.

He does do something...it’s been a while since I read the novel but he’s not the type to give people short punishment rather he would makes their lives living hell but in that moment he saw his loved injured for him getting her out of there was more important than punishing them...doesn’t mean he didn’t punish them but not at that time!!
So your telling me he legit saw his wife being strangled by the mother and sister and he did NOTHING TO THEM???!?!?!? NAH im out this is trash wttffff