The way I see it, Kurotsubaki is just a cameo for the sake of "hey, that's from the anime!", but it would be interesting if it actually played a bigger part in the… plot. Still a weird word to use when talking about this manga.
Klaus, you poor bastard, you will never be cool… How is it that Hata can introduce so many characters I want to be awesome, then ridicules them every chance he gets… and I'm fine with that?