There were a couple of things that bothered me about this manga, and I don't mean the poor quality of the first two or three chapters (one can get around that easily). The worst of all I think was that none of these characters, from the twins to those around them, were lovable to the smallest extent. Rui is obnoxious and manipulative, Minato is a dependent pushover with the lowest self-esteem, to say nothing of their terrible parents and useless complying friends.
Another thing that particularly annoyed me was the insulting way the whole deal started. Right off the bat the reader is supposed to believe in this long lost brother and a supposed-dead mother, who always loved Minato at a proper distance, as well as in this "trustworthy" father who ignored one of his kids' very existence and denied the other one his own mother. We are supposed to feel sorry for him, the poor thing, who could not "forgive that woman" (who did nothing wrong, by the way) and so justified his miserably actions in self-pity. We are also to believe that Rui's love is the result of this abstract bond between twins who never met in the course of 15 years, thus self-justifiable. How Minato, who started off as a seemingly reasonable kid, came to accept this love and return it (despite the fact there wasn't an ounce in him that came across as interested in men) is just a commonplace given. "Oh, you love him back? Okay, cool. I guess that's fair since this is a Romance... and all?" this was my reaction to the whole trust-speech-and-confession chapter.
The acknowledgement of incest, on Minato's part, came up once only, but even so I found it an interesting attempt that could have actually saved the story. That is, of course, until it lost all purpose and we were back to nonsensical misunderstandings and shallow angst all over again. In the end, like mangafan321 pointed out, nothing is sort out, nothing gets a satisfying answer:
they spend one year apart and reach the conclusion that they are willing to wait for each other forever--what does this even mean? Are you willing to come clean to your parents and friends? How will you feed that oh-so burning love that somehow consumes you, even though we don't really understand why? Or do you mean, you are "destined for each other" as in "we'll meet our destines when we die" sort of thing?
I need more twincest now.