Quite nice and steady animation. The character designs are a bit on the simplistic side, but they are nice to watch. Funny scenes are drawn very well, and there are quite a few of them. You will find a lot of ecchi (especially panty shots and the "top part") in this series, but not just light stuff. In my honest opinion this series does touch the border of hentai with some scenes...
Now this is something that raises the overall rating of the series by quite a fair margin. The opening tune is average, but the ending done by YURIA is something that makes me want to learn how to play an electric guitar. The tune is really catchy and the vocals are superb; as expect of YURIA... Another praise goes to the background music, which has especially nice piano pieces.
An aspect on which I can't write too much about. It was poor; A girl suddenly appears and just doesn't stop harassing the main male character. I won't give any spoilers, but the storyline is explained very briefly and poorly, and the ending is rushed. Side stories kind of balance this fact, since they were fairly good, but not complex enough to reveal all aspects of the characters.
Since this is a shounen anime you can expect quite a few (cute) female characters, which this anime successfully delivers. Each of them is different. Some girls are normal, one is tsundere, another is very shy and then you have the weird ones as well. Oh, and we can't forget the teacher with a large chest. As you can see, this is quite a typical aspect of this kind of genre. Most of the female characters have their own side stories, with the main male character of course, which give us an inside into their life and personality, but none of them are developed enough (perhaps playing the game would help here).
Now onto the male characters; There are quite a few of them. The main male character is the most important one of course. He's a typical "good and nice" guy that you'll find in most harem animes. Now, all the remaining characters are simply ugly perverts as described by the female characters. They are there to provide entertainment, and they do it well. It all makes me sometimes wonder: "What is this main character doing in a school filled with pervs and rejects. He doesn't even fit there at all?!"