first of all, the MC is too proud and arrogant and an idiot who kills anyone that offends him without thinking about the consequences which leads to enemy hurting those people important to him which again leads to him killing more of them. Thus the cycle begins. This is pretty much how the story goes, maybe even till the end.
And second, he rapes women and thinks it’s only reasonable because they tried to kill him and the people close to him. *Sigh* maybe the author has a fetish for rape or something. Isn’t it enough that he kill them instead?