I feel that Akatsuki no Yona is somewhat underrated. I think it's my favorite manga and that Kusanagi is something of a comedic genius, especially with the finer details and less overt jokes.

Akayona is so touching but also really funny and the female protagonist isn't a complete airhead. The character development is also great (if you re-read from the beginning after being up-to-date, this becomes more obvious).

The art style is also quite varied so you don't feel like everything and everyone looks the same.

However, I personally do not see Akayona as being very plot-focused (which I actually prefer because it seems more true-to-life). I think my only complaint is that I have to wait a month for each issue to come out (though I think this is normal for shoujo); the chapters always leave you wanting MORE.