I don't mind, most of us are here for the girls (and why some male MCs are featureless). I hate if they pile on obnoxious characters though, I've dropped some series because of that once that happens, or if I noticed the author only knows to add more characters since they don't know how to improve the story.
Washio is too much of a downer for my taste though that it's distracting me from appreciating the monstergirls. The series has dropped hints here and there why he's like that, but I need a clearer reason than what has been shown so far, or for one of the monstergirls to actually care/notice why he changed.