I like the the two leads. I like how Yuniko is not weak, but not a brash either. She is your 'strong, confident, but cute and silly' type. Not to mention she has a good body (something almost EVERY shoujo female lead lacks), or at least considered so in the manga. And I like how Ryu is just 'boys'. Sometimes he is a pervert, a pushover, acts silly, but still like to act cool (and he's hot). He is not your Mr. Perfect, even though he is a bit too understanding, not your 'cold' or a teaser that would actually make a 'real' relationship awkward for me.
I like the pair. I like how none of them are such a shy or reluctant when it comes to 'lovey-dovey' moments. They want to be spoiled by and spoil each other. And they actually say things like 'darling', 'honey', or 'baby' (or is it only the translation?).
The plot is good, it keeps going, not only filled by 2-3 chapter arcs. Some commentators below me said Yuniko is annoying and selfish, but I'm not completely agree.
Okay, so she almost sleep with Maki but after she broke up with Ryu. Not really cheating. But it does annoy me, thank god it happens only for less than a volume. And I can understand Yuniko's acts when Ryu decides to go to Hollywood. I mean, it happened so suddenly, Ryu had never talked about it, and it was the first time he heard about it too. He agreed immediately, without even took a glimpse at Yuniko, like she didn't even matter. Of course she would feel insecure. Yeah, he did it because he believed that Yuniko would understand, but that's not how you run a relationship.
But you'll actually see that they put each other and their relationship above anything else, and they will do anything for each other. Overall I like it better than Heart and H3 School.