On December 14, 1885, Vincent Phantomhive, his wife Rachel, and the family dog, Sebastian, were killed in a fire. Young twins Ciel and Sirius were kidnapped by a mysterious cult as the manor burned. You, the eldest of the family, were not there. You had gone abroad for your studies, and had decided to return early so as not to miss your little brothers' birthday. You returned to find your house destroyed and your family gone. And by the time you were reunited with Ciel and Sirius, it was too late to save them. That's when you called him unconsciously, as he heard you curse God. A deal was made after that.

Three years ago you made a Faustian contract with your Demon Butler named Sebastian Michaelis. He granted your wishes and you took revenge thanks to him, while gradually regaining a taste for life through various adventures. Unfortunately it was now going to end. Sebastian has completed his work and, as the deal demanded, your soul is the reward he is about to claim. However, you realized that Sebastian was no longer just referring to claiming your soul but also your...heart? He told you that he was going to devour you whole, and raw. 'Young master, I think it’s time for my prize.' He purred.