Brother

From DramaQueen: Momoki Asuka and Momoki Yui are two step brothers who were the best of friends until an unfortunate incident one summer's day. Ever since then, Yui has avoided Asuka at all costs, even going so far as America to study. A super tennis star, Yui no longer needs a big brother, so where does that leave poor Asuka? What happens when brotherly love transforms into something more? Volume 1 - Brother Volume 2 - Brother 2