Just when I find a good wholesome manga like this, it ends with a freaking out of the blue wincest cop-out. Not that I mind it too much, but there was so much more potential to him finding someone out there in the wide world than "guess I'll wincest since she's not blood-related!" Woulda been nice to at least have a chapter or two to establish him and his sister dating, but nope, just immediately getting married. And then it's over. Oh well...