Says it all in the title

Sequel to Kuroshitsuji II. Following a moment of betrayal 100 years ago, Sebastian meets someone named Ciel that resembles his young master exactly in present day London. CielxSebastian.

Ciel and Sebastian have been writing to one another for three years. In those three years, Sebastian has been oblivious to Ciel's true gender, due to the fact they have never met. What will happen between the two when they finally come face to face? This story takes place in the mid 1800's. Sebastian and Ciel fan fiction. I do not own the main characters, or the manga and anime series of Black Butler.