This one's a little more recent, a sort of AU where Aoba from Dramatical Murder finds and "adopts" Kau from Togainu no Chi and is nice to him lol. I never played TnC but I bought that naughty Kau figure so I looked up the game/watched a little bit of peoples' play throughs/etc. to learn about the character. And uh I liked Dramatical Murder better and thought Aoba would be nicer to him and that's the story lol