Well that was an anime. I actually enjoyed this quite a bit but felt the ending was somewhat anti-climactic. Still I liked the characters and their outfits and the story was nice.
As far as Nyatto! goes, it’s one of those super-ecchi manga where every third page has nudity, similar to series like Kagaku na Yatsura. It also has plenty of cat-girl action. Good stuff.
Based on non-nude source material, this show actually feels a lot more like a real anime than most nude ecchi series do. Maybe that’s why the fanservice ends up being so damn sexy.