I felt like all the reviews here were written with hasty opinions (which makes sense, since there are only 10 chapters scanlated), so I thought I'd add my two cents after having read up through chapter 35.
Fans of Maki Youko will find more of her usual fare--general hilarious fluff, hyperactive characters contrasting gloomy characters, and a gradual darker theme. As is also typical of Maki Youko, romance takes a second seat to themes like family relationships and friendships. Don't be fooled by the cover--the two main characters are Aoi and Akane, a pair of twins, but there is no incest to be found in this manga. The themes have more to do with reestablishing a broken family bond and how they develop their relationship/support as sister and brother after years of alienating each other (although if you REALLY want there to be, there's enough hints at a sister complex to satisfy you).
The girl starts out as an idiot, but she eventually decides to study harder and catch up to him. Combine that with her generally strong-willed, positive attitude and she turns into a very likeable protagonist. The love interests of both twins are people you end up rooting for (Shin is adorable), and there's generally little drama/insecurity that is typical of shoujo manga in their relationships. On the contrary, there's a slow development of trust and support, which is a lot more realistic than your typical shoujo. I find it nice and refreshing.
Anyway, bottom line is that if you liked her older stuff, definitely give this one a read as well. A lot of her recent stuff have been series that ended abruptly, so I'm happy to see this one is going strong. Probably one of her better series since Aishiteruze Baby.