This was basically like most other harem mangas. The MC does absolutely nothing with the incredibly sexy women. There is also teasing, which I really hate, and not nearly enough nudity. The humor was just fine, and the art was done very well, but the story I did not really care for. I mean the story was about beautiful monster-girls who wanted to make babies with a human. Why couldn't Keitaro just let himself indulge in the pleasures of monster pussy? Nia, Rosette, Monet, Elvira, and all those other sexy monster-girls. I would have liked if it showed other monster-girls, and not completely focus onthe half-devils - like mermaids, trolls, ogres, orcs, harpies, etc. And although its's never really explained why he ended up in that fantasy world or how the dimensional portals work, why in the hell would Keitaro want to return to his old life, when his new one is so much better. Plus, he's surrounded by beautiful and strong women who actually desire and want to protect him. How can it get better than that?! If this manga was more like "Peter Grill to Kenja no Jikan" and "Kaifuku Jutsushi no Yarinaoshi" it definitely would have been a much better story - but that's just my opinion. I don't know if other people will like it, but I suppose they should at least give it a chance.

But as always...these are just my opinions.