One word: Beastiality... Is what I would say, but this series is actually a comedy in my opinion. Let me explain why:
The characters are over the top. Heck, the main character should've been dead from the first minute of the first episode! He's OP, but in a humorous way. Also, he's simple. He hardly even uses any expression other than the blank stare. For some reason, however, I can remember him quite well.
Of course, let's not forget the heroines. Again, they're your typical heroines, except they're FRIGGIN' MONSTER CHICKS!!! It actually makes you confused. Should you be aroused, feel pity or laugh out loud? I don't friggin' know, but I enjoyed it nonetheless.
All in all, it was a funny anime. If you're into monsters and hot girls, then be my guest. But it's not easy living everyday with monster girls!