The story: is frustrating at times but it gave me some strong feelings that even real life people haven't. It could be because I haven't read many romance manga though. One thing I don't like is that sometimes the author get lazy and create events that are too convenient to solve the problems instead of a step-by-step progress.
The art is great except for the males characters being a bit too "shoujo" for a shounen manga.
The characters: Well. This is where readers divide. First discussion point is the main male character. This guy sometimes acts really dumb, especially at the beginning, but the author is amazing at showing the progress in which he changes himself. Then there is the main focus of the whole manga: the two sisters. Two opposite personalities, living in the same house with the male protagonist. Try not to be too drastic with your favoritism for one girl and you'll have less frustration while reading.
The support characters are unique and have their own story, which is a nice bonus.
As a young male adult, I have to say I thoroughly enjoyed reading this manga.
Some advice: Try to have an open mind while reading this. You will very likely join one "team" or the other, but don't quit just because things seem rough for yours.
