Confusing lols but since the author died and cannot continue the story, let's assume the uke end up with Narita (or Orita? Idk). The brother is a psycho orz.
Like doujinshi for a series I've never seen- can't read this. Some of the rawest smut I've ever seen is in this, too but Christ's sake, they were pushed out of the same womb. The genetic material they share isn't only spermatozoa.