This show certainly isn't for everyone. I couldn't recommend it to anyone other than young men, who will most certainly at least enjoy the constant nudity. But that shouldn't put everyone off. The series starts off seeming perverted, but as it progresses it starts getting soppy, cutesy and romantic. And so what? It's a boy's show, meant for boys at the kind of age where hot girls and breasts are all that matter, and in that area, it works.
The main point of criticism I have is in the writing. Some of the dialogue, is, well, pretty embarrassing, but on the whole it's okay. And I couldn't help feeling that the plots could be better; that many things about the demons weren't explored as much as I wanted them to be. In fact, the writing goes out of the way to include something to with boobs or whatever, but I guess that's what the exploitation genre is all about.
But still, the animation was very good, as was the music. Some of the battle sequences were thrilling, and the interactions between the main protagonist and his friends were pretty hilarious. On the whole, I enjoyed it; not for everyone, but if you're into this sort of thing, give it a go.