@Kami_Nana First impressions last. They've only known each other for such little time yet shes already literally kicked his head in. What did he deserve? A beating? All he did was let the girl and the friend talk, so ofc I will assume she is abusive. Violence is unnecessary, especially between "friends", no matter if it was male or female. But the fact of the matter is, the one that happened to kick the MC's head was female, so ofc the MC didn't do anything back.
Also, I do know that not all mangas have annoying FMC's like this, it's just boring to have such a shitty cliche in most of them.