It's not fantastic.
It's a very typical shoujo, with very typical melodrama, with the subject being cooking. The main character wasn't particularly likable nor annoying-- she was basically a ridiculously happy and optimistic girl we see the story through. A lot of her actions were somewhat annoying, but I wasn't really expecting anything else with her personality.
The other characters are similar. The male leads, surprisingly (for a shoujo manga) are.... not much better than the female lead. One is the typical prince character with a past, and the other is probably the most typical male lead you're going to come across.
As far as character development goes, there is very little. It would not be an exaggeration to say that there is NONE at all. The plot is very fluffy with the usual shoujo melodrama, and frankly, I don't understand how it ever became so popular. There's really nothing to recommend it over other series of the genre.
As some other reviewers have said, it leaves literally no impact on you, despite the tag "tragedy." Which is probably the saddest thing ever. It goes from light-hearted to pointlessly tragic with badly conveyed emotions to...
Ugh. I don't even.
This is literally made for young (very young) girls who don't know enough to be disappointed with the mediocrity of this manga. Even die-hard shoujo fans should be wary that this manga starts about typical, but decent, then spirals down into pointlessness.
That being said, it's not terrible. As I said, it's fluffy and pointless and kind of dramatic, but that doesn't mean it's the worst shoujo manga out there. I just wouldn't waste my time (or you waste your time) reading 10 volumes of it. That and there's not that much of a plot. You always get the sense (because it's so event-driven) there's either too much or too little going on.