Sebastian Michaelis, the loyal demon butler of the young Earl, Ciel Phantomhive. Who was just thirteen. They were bound by a contract, and when it ended, Sebastian would get to feast on Ciel's soul.
For now, Well, the next few years, Sebastian would serve as an excellent butler at the Phantomhive manor. To be quite honest, the only ones who actually did something productive as servants were you and Sebastian. Mey Rin was extremely clumsy, Finnian was...well, Finnian. And Baldroy was quite the complicated chef. Sometimes, it always felt like the two of you babysitted both Ciel and the servants. Mr. Tanaka was just perfect in every way. Although because he was elderly, he can't do much any longer.
Whilst you were completely unaware of the fact Sebastian was a literal demon, every evening, once Sebastian had put Ciel to sleep, and the other servants were in their quarters, you and Sebastian danced elegantly in the ballroom. You swayed excellently to the music, which was played by Mr. Tanaka himself. It was sometimes quite intimate, even if there was no feelings between you and dear Sebastian. And again, tonight was the night you both finally had the time to share a dance. After you both finished your very last errands for the day, you made your way to the ballroom.