Kurt woke up slowly, no insistent alarm in his ear – weekend, his brain supplied in explanation – and took stock of his situation as he always did. He was in the bed; that wasn't unusual. He had a pallet on the floor at the foot of the big oak bed frame but he was rarely made to use it. Sebastian, despite all appearances to the contrary, was a cuddler and loved to fall asleep with his hand wrapped around Kurt's caged cock, reminding them both of his unopposed ownership of that and every other part of Kurt's anatomy. But sometime in the night Sebastian's hand had dropped away and now it rested lower, against Kurt's bent thigh. They were still curled tightly together, Sebastian spooning Kurt, his cock resting against the crack of Kurt's ass. It was soft, though, so Sebastian was still asleep and Kurt could continue his inventory.

He stretched fingers and toes, anything he could move without disturbing Sebastian, checking himself for bruises or sore spots. Sometimes, when they went especially hard, Kurt woke up aching all over and it was good to know what kind of movement he needed to avoid before he climbed out of bed to start his morning duties. But last night Sebastian had been tired, he hadn't even fucked Kurt, despite Kurt's eloquent pleadings, so now the only ache he had to endure was the ever-present one in his groin. Which he hardly noticed anymore.

No, that wasn't right. He was constantly aware of the hot, pressing need. It was like a living thing, curling inside him every minute of every day, waking at times to surge down his cock until the unyielding bars of steel forced it back, damming it up to overflow into his belly and his thighs and curl dormant again until its next inevitable attempt. He was just as constantly aware of his balls, which would pull tight and hard as rocks against his body until his exhausted muscles couldn't support them anymore and they dropped to hang, pendulous and full, swinging obscenely between his thighs. It was wrong to say he wasn't aware. Kurt's frustrated desire was the center and driving force of everything he and Sebastian did together.

Unremarkable. That was a better word. None of it was worth noticing, because there was nothing Kurt could do about it and nothing Sebastian chose to do about it. He'd known from the start, from their very first meeting, that if he entered into this … thing … with Sebastian he could pretty much kiss any kind of orgasmic release goodbye. I'm not one of those doms who rewards his subs with orgasms, Sebastian had told him, your reward for good service is to be allowed to continue to serve. Your body exists to give me pleasure so you only come if for some reason it will please me to let you. And most of the time it won't. Sitting across the table from Sebastian in the dark club, with the challenge of those words shining in Sebastian's eyes, Kurt's brain had recoiled. But his cock had surged so hard that when he peeled off his pants later that night he found the imprint of the zipper pressed deep into this skin.

And so here he was. Curled into Sebastian's body and throbbing against the bars of his cage, just like every morning. Mornings were the hardest. At some point during the months he'd been kept under almost constant lock and key, Kurt's cock had realized that trying to get hard was futile, useless, and painful and now it almost always stayed obediently flaccid, no matter how desperately turned on the rest of Kurt's body became. As soon as the cage came off it roared at light speed to full and glorious erection, but the moment the lock clicked back into place it bowed to Sebastian's wishes with surprising alacrity. Kurt was grateful for the small mercy. Weird as it was to feel like he was teetering on the very brink of orgasm while his cock hung soft and useless and didn't so much as twitch, at least he was spared the added pain of his flesh trying to force itself through the tiny openings between the bars.

Except in the morning. The morning wood instinct was so primitive even months of training couldn't stop it. Every morning Kurt woke to the extra pain and pressure – and every morning Sebastian, with his uncanny ability to zero in on Kurt's weaknesses, found a way to take advantage of it. Even asleep. Although Sebastian still didn't stir, his cock, prompted by its own primitive instinct, began to swell against the crack of Kurt's ass.

Kurt sucked in a breath and held it, twisting one hand in the sheets to keep himself still. He longed to rut back against the increasingly hard pressure but it wasn't allowed, he wasn't allowed to move at all until Sebastian woke up and told him to. He certainly wasn't allowed to seek out any kind of stimulation without Sebastian's explicit permission. The thickening cock, so close to where he needed it, was the cruelest of teases. With all the usual forms of sexual release forbidden to him, his ass was everything, the insatiable source of the only pleasure Sebastian regularly allowed him. The longer he was denied the more he needed to be fucked, often, and hard, it was like scratching an ever-present itch deep inside him and though he knew the itch would still be there once the fucking was over, he craved the pure, mind-numbing relief that he couldn't get any other way. Which Sebastian knew and exploited in every possible way.

And speak of the devil, a loud breath blew against Kurt's neck and the hand on Kurt's thigh twitched, stretched, then moved deliberately to wrap around his swollen balls. The cock, fully erect now, slid between Kurt's ass cheeks, grazing his hole in a tantalizing reminder of what could be, but wasn't. Yet. Kurt fisted the sheet until his hand ached and forced himself to stay still, but he couldn't suppress his moans as Sebastian teased him with fingers on his balls and cock so close to where Kurt wanted it. Fortunately, sounds were almost always allowed. Sebastian liked to hear him moan, and beg, and cry. His fingers squeezed Kurt's balls until Kurt could feel precome pooling around the opening at the end of his cage. Sebastian noticed it immediately, of course, and gathered it up on a fingertip which he raised to Kurt's mouth. That was another of Sebastian's unbreakable rules. Anything that leaked from Kurt's cock, Kurt had to clean up. With his tongue. Obediently, he opened his mouth and licked the tangy fluid from Sebastian's warm finger, suckling at it until Sebastian pulled it away and rubbed it, spit-slick, over one of Kurt's already erect nipples.

He cuddled closer, rewarding Kurt for his obedience with a harder poke at his hole, and pressed his lips to Kurt's ear. When he spoke his voice was both sleep-heavy and pleasure-rough in a way that sent electricity tingling down Kurt's spine.

"Morning, bitch."