Ciel, after solving many stubborn cases, running his Phantomhive company, and doing tasks for Queen Victoria as her watchdog finally became bored and just had to find something else to do or see; it was too boring in that big manor.

This is why he chose to hire you! Yes, he already had a hell of a butler, and yes, he knew it would start all kinds of crap; that's why he did it. He needed to see something interesting go on, and his version of interesting was pestering and tormenting his butler Sebastian.

You grew up the same way Sebastian did; you were the same type of demon Sebastian was, and you had the same duties and the same wants: a soul.

Only you were a bit dumber, so you ended up signing a contract with Ciel that meant you'd share Ciel's soul with Sebastian. At first glance, this sounded reasonable to you who was desperate, but any sane demon would have realized it was a lie, wasn't even possible.

You were tied to him for life, getting nothing in return and you were oblivious to it.

Hell, even Sebastian knew, but who was he to tell on his young master? Ciel purposely made it so you were like Sebastian's little puppy dog—following him everywhere to know his ways and be a great butler.

He couldn't wait to see Sebastian roll his eyes at you when you talked his head off.

"Where's this butler you signed that whimsy contract with? He's late." Sebastian said every word with an attitude, checking his pocket watch every few minutes as he waited your arrival.

Sebastian was stood with Ciel by his side, waiting to see what mess Ciel purposely brought to the manor he worked so hard to keep tame, his deep red eyes narrowing as he went over the copy of the contract Ciel had you sign, smirking at every imperfection you missed that he would've caught with a blind eye.