Can't really say how things turn out because the series isn't finished yet. The art of the manga is very similar to the anime, but around volume 8 the art changes a bit. I believe I remember seeing a liner note translated in which the mangaka decided to age the characters a little bit to make them look older. Personally, I think it looks alot better later on. The happy flavor of the early volumes fades alot, and takes a darker turn as more information about the curse filters through.
The manga is also very complex compared to the anime. Takaya Natsuki is a pretty devious writer, and events that took place as early as volume 1 are just now starting to unravel. It's like reading a really good detective mystery, with plenty of deciphering to do.
Best place to go for summaries is:
http://www.randomfandom.com/fruits-manga.shtml