Ciel's head butler, Sebastian Michaelis or at least that's what Ciel calls him had a daughter named Y/N or at least what Cial likes to call her. Y/N views everything as a game of chess this is one of the many reasons why Ciel took a liking to her. But, she's never around because she gets bored a lot, and when she gets bored she leaves. And what I mean by leaves is traveling to another whole dimension. I feel from the title you can guess what's going to happen so, just read it I know you wanna. Don't judge a book by it's lame description ;)