I've seen this anime 3x and have read the manga 2x (and I am still reading it since it's ongoing)! This anime was the first ecchi anime I ever saw. This anime is the reason I became somewhat of a pervert. XD
Hopefully more episode will be made since the anime and manga are almost COMPLETELY different plot-wise. What I didn't like about the anime was how Kouta was a complete pussy whenever Chizuru or Nozomu tried to do something perverted (or a simple hug) to him.
However, in the manga Kouta is the complete opposite when you get to the later chapters. In fact, Kouta is an "animal" when Chizuru or Nozomu attempt to do something perverted to him. He just gives in rather than resist.
Some people don't like this anime and some do. I guess it's just one of those things where you either like or hate it. Compared to the manga, I believe the producers could have done a better job with the anime if they let it follow the manga's plot more. Some of the episodes in the anime had content that was not released in the manga until later!