Honestly - I like this anime. It just turned out to be a leveled-up romance-comedy series with all those perverted thoughts and scenes. In my opinion, it's not really that much of a hentai, well, compared to Sekirei. It's just an anime full of perverted thoughts, humongous boobs, comedy, and the vain love of the girls.
I should say, the concept is pretty good. The plot is well-arranged too, and the pervertness is balanced out with the comedy. It's also good that the main characters are all dense rather than just only a character being one.
The drawing is pretty good too. Kosuda's as-if-he-is-not-the-main-character look is a refreshment, considering that almost all anime have bishies as main character. Well, the big boobs are still bothering me though. How can one get a natural G cup anyway?
Anyways, it's good that the mangaka substituted "the thing down there" and "libido" with an erogami or the characters' chibi-fied self rather than drawing the real thing or do the traditional covering of it. It added to the comedy and broke the usual way.
I really find the theme songs very cute and sweet, thanks to Yukari Tamura's cute voice. They also fit the anime, or so I guess. And the "B Gata H Kei" song that is always present when there's a perverted scene is also quite good.
I guess this anime is an 8.7 out of 10 for me. I recommmend this to the perverted bored ones there who don't mind soft ecchi. Well then, off I go.