I'm Brazilian, and when I translate, I realize that the MC doesn't have any dialogue, it gives the impression that the DV must be sexist, a very blunt character, The MC's nonsense lines, when the girls are so nice he in his lines well Ridiculous and out of the question German mostly with monologues. But the game itself apart from his lines is very good.
I beg to disagree, he's a lone wolf yes but is not a sexist or else he would have treated all the girls like objects good only for being used, instead he care and try to help all of them, not only Alex and Izzy.
A true sexist would never went out and offer to protect the nurse from his ex boyfriend/stalker, instead would have asked for something in return to do that, yet he helps her without asking anything, just to give you the first example that comes to mind.
His bigger problem his that he's unable to show too much emotions or express himself through long speeches ( even though he becomes better as the story progress) and thus he seems like a cold hearted being, also the rage filled episodes make him seems even more dangerous, but except the blonde bitch that tried to step on Boris position he's always very kind to every girl.
That being said I'm not trying to force you liking him, it's up to you in the end, but I would say that despite him being certainly not a positive hero, he's not a bad MC, I honestly seen worse so far.