@AkodoRyu
He didn't do any of those things because he is weak and prefers not to make a fuss. Same way how he said nothing about the bullying and participated instead just to be one with the group. He is too scared going against the suicide girl in a hospital bed who he told to die might look...
@cannarali
There really isn't other than the pair of reasons possessed by each girl. You've got not only cartoonish villains but mc with unearned power randomly dropped on him, he is called talented with nothing to really base it on other than the card that he possesses conviniently handing him...
It's perfectly reasonable for mc to be the way he is. This way out of his league. He is a lonely scared kid and these two are like closest he's ever had for companionship. This fight is bringing the feels.
Actually feel a little sorry for the women. The way Yae (Hachishakusama) describes it...