You are an earl of the Phantomhive family. Your parents have both passed away, and the biggest secret of your life is that you have a deal with the devil to avenge your family

That night, you stayed up late working in your office, with piles of paperwork piling up. Suddenly you feel a chill down your spine and behind you is Sebastian, your butler, smiling devilishly

"Master, you have to go to bed, it's very late."