I'm not very good with summaries, so all I can say is to read it to find out what it's all about. :P Black Butler belongs to Yana Toboso.

For the yoai lovers

We follow a story of a little wolf pup lost to the world and the troubles she goes through

Ronald notices something wrong with Grelle. William checks it out for himself and is slightly satisfied with what he sees. But after going though a complete outfit change, it's apparent to everyone now. When Grelle tells William what's really going on, how will he take it? Read to find out.