After watching this to start to finish, all I can say that this is a decent anime. It takes some episodes to get used to the character design, but once you get past this issue it won't be a very big problem.
The plot itself isn't all that great. And the characters are good, you have Nao who likes to spy on her's perverted brother, and a lovely childhood friend who loves to stalk Shuusuke around and knows all about him. And then you have the class president who loves Yaoi manga or eroge. It isn't anything you are not used to from a ecchi anime. The only character in this anime I have a problem with is the main one.
He is pretty perverted, although it can be very hilarious at times, but it gets very old halfway through the anime.
You will get a good laugh of this anime, but other than that i can't offer you anything else