Which one is the slave?

Sebastian x Ciel

So, I finally type something that isn't a Fullmetal Alchemist fanfiction lol. I love this anime, it's one of my favourites X3 And I love the relationship between these two characters (yes I know in actuality they are nothing more than master and servant, I'm not in denial! Honest XD) Also, there may be spoilers so if you haven't watched / read it and want to I urge you to avert your eyes :P You've been warned...

Chapter 1: In the evening, the roles reversed.

"Good morning master." Sebastian chimed, drawing the curtains. Ciel raised his head from behind the covers.
"Is my tea ready?" He asked, glaring at his butler.
"But of course master, only the finest of leaves picked to suit your tastes my lord." Sebastian smiled, dressing Ciel. Ciel looked at his butler, his eyes scanning every feature of Sebastian's face.

"Something wrong my lord?" Sebastian asked. Ciel looked away , staring into space.
"Of course not. What's on the agenda today?" After much discussion and noise (no thanks to the other 'help') most of the day was out of the way. Ciel Slumped into his chair and exhaled.
"Finally, I thought the day would never end." Ciel huffed. Sebastian chuckled and placed a plate of cake before his master.
"But master, surely today's activities were not so distasteful as to disturb your evening?" Sebastian smiled.

Ciel thumbed through the papers on his desk. Need he really answer that question? He took a bite of cake, savouring every sliver of flavour.
"Sebastian, I realise how you being a demon denotes your excellence in the art of patisserie, but yours are unlike any master chef's I've ever tasted." Sebastian swooped around Ciel, gripping his chin between his thumb and forefinger.

"Why, it is customary of the Phantomhive butler to be able to handle tasks as menial as this." He muttered, licking cream from Ciel's lower lip. Ciel moaned lightly, causing a smirk to spread across Sebastian's face.
"My my, such an unsightly noise to leave your throat." He chuckled, standing up and walking away. Ciel blushed, pressing his fingertips to his lip.

"Sebastian..."

***

That night, Ciel tossed and turned in his sleep. Flashes of Sebastian seizing control of his body flooded his mind. One moment slowed to a normal pace. Sebastian gripped Ciel from behind, his breath hitting his ear. Ciel shivered and squeaked in his grasp.
"Sebastian..." Ciel moaned. Sebastian licked his lip once more.
"That will never do, I believe I taught you to beg did I not?" He smirked, crashing his lips against the boy's. Ciel's body squirmed beneath his butler's touch.

"I shall not beg at the servant!" Ciel barked. Sebastian's lips curled into a cruel smile.
"Then I shall have to take it by force." Sebastian laughed, tearing the clothes from Ciel's body. As the cloth left his skin, he shot up in bed, panting heavily.
"Damn you..."