At first it seems like your typical shojo anime, however you get drawn into the storyline. The plot gradually grew, but I thought that they rushed the ending of it. Unlike many other anime, the story is quite similar to the manga, so if you if you read the manga as well, then you'll be glad.
I'm personally a huge fan of romantic scenes and there were quite a few of them that just made me all mushy inside. There was a lot of action scenes as well so it isn't all just lovey dovey....so yeah, I think it's worth watching.
This is my first review, I tried to be broad so it doesn't give anything away but I'm not sure if it's any good....anyway yeah :)