Both the manga and the anime are very enjoyable; if you like shojo manga.
It's a magical girl story, but while is aimed a girls, adults can enjoy it too since it's not overly cheesy and it doesn't revolve much about how much the main characters like a boy or how much they would like to have a boyfriend.
Even Chocolat's love-hate relationship with the misterious boy is quite well done, and it really doesn't become the only plot development of the story.

On the other hand, one of the things I didn't like about the anime was it's episodic nature. It's usual in magical girl stories, but it would be better if it had a continuity, from episode to episode.

It's a good watch if you like the magical girl genre and you are tired of generic and too simple stories that are out these days.

I really enjoyed this manga as well as the OVAS. It's one of those mangas you'll love or you'll hate. The characters are charismatic and well defined. The overdramatic developing of events are not liked by everybody but it has some comic relief when needed.
It also has some yaoi scenes, that don't go as far as being explicit but they leave no doubt about what's going on.

The OVAs design is not bad, but it doesn’t give the same feeling that the manga. It fixed some of the major mistakes from Ozaki’s art style but they are not very similar, but maybe my opinion is biased because I like her doujinshi-like drawing style.