From what i read all of 6 volume it's pretty much go to the harem route.
there are four girls is a main harem and all of them are nice.
Personallly i like Hal then Godou.
He not dense at least one of the girl win his heart now and he can handle girl better then Godou. he admit he is prevert (not in level Issei from DXD) to his harem and want to do some "ecchi" thing if they give him a chance (just like a man should do right?
)and he no need "Youth form" to show his true color XD