I found the main character to be very annoying.  To me, a big aspect of if a game is good or not is the personality of the main character, and to me, he's just boring as heck.  I get he has a past, he has a hidden agenda and doesn't want to get too close, but the very robotic nature is very annoying.  If you play this for a harem route, it's very inconsistent.  Otherwise, everything else is typical with the exaggerated size of body parts, story flow, etc.