The Darkest of Souls is a black butler fan fiction between Sebastian and my OC! Ayy its your buddy Dye again here to bring a story that will always keep you wanting more. WARNING: This fan fiction contains: Sexual content, Foul language, Gore, Vivid descriptions of violent battles usually leading in gruesome deaths, and references, including characters to different shows, movies, people, etc. Demon Butler, Sebastian Michaelis, is off strolling through the streets of London, feeling lonely with his existence. On his stroll, he encounters a beautiful girl. Being his usual self, he thinks he can easily win over this magnificent creature but when he realizes who this girl really is, things might prove to be more difficult then he thought.