Sebastian and Ciel tease each other a lot. Sometimes Ciel gets the better of that game, and sometimes Sebastian likes it when he does. Featuring demon-esque bondage kink.
Sebastian was a demon who appreciated artistry, and that was why he liked his current master so much. To be sure, Ciel’s early efforts had been a bit rough. It had taken a year or two before Ciel realized that simple physical feats wouldn’t trouble Sebastian and turned his ingenuity to devising more subtle traps and conundrums.