He threw his head back, his cock drowning in sensations.

The man working him down there was rough and clumsy, but through his sheer force of effort, Serrin was being brought to climax.

He reached up to grab the cool metal bars that served as a headboard for the bed. Bedur liked Serrin to tie him up when their positions were reversed, but Serrin didn’t care for it himself. He wanted to control his own experience as much as possible.

When you were once part-robot, control meant everything.

Serrin gasped, trying to hold it off, but to no avail. He shouted his release as Bedur sucked him like a vacuum bot, milking him for all he had.

Eventually he gripped Bedur’s head and gently removed him from his dwindling cock. “That was great,” he rasped out.

Bedur was sensitive about his prowess. As the absolute ruler of Horon he had an ego the size of a supernova, but somehow was still insecure about his ability to please Serrin.

For the thousandth time, Serrin wondered why Bedur cared. He could have anyone he wanted on the whole planet, either by charm or by force. No one could say no to the ruler. And yet—

“Was it good?”

Didn’t you hear what I said? “What do you think?” Serrin tamped down his irritation as he gave him an easy smile. He touched Bedur’s cheek, then gripped his jaw firmly. “Come here.”

He put a neutral expression on his face and just allowed himself to enjoy the feel of the other man’s warm strong body moving against his own. Bedur was muscular and big-boned like Serrin himself. His dark golden skin and long russet-brown hair, deepset amber eyes, and full lips would have made him the center of attention even if he wasn’t the supreme authority on the planet.

Serrin closed his eyes as Bedur plunged his tongue into his mouth.

Ever since he made the choice to let his machine side dissolve and become a full human, he had become Bedur’s obsession. The ruler had given him a high position in his royal court. As chief of security, Serrin had full access to the inner workings of the court and governing council as well as Bedur’s ear whenever he needed it.

Bedur was demanding, as one would expect of a planetary ruler. Yet he held back when he sensed that Serrin was annoyed or felt too imposed on. It was part of their odd relationship dynamic. One would expect Bedur to dictate terms and Serrin as his subject to knuckle under, but it wasn’t that way.

Serrin was the only one who knew that Bedur had a submissive nature hidden beneath the commanding persona he showed everyone else. It came out in bed and even in the way Bedur would approach him for sex.

He was hardly Bedur’s only sex partner—the ruler was known to bed men and women and sometimes both at the same time. But Serrin knew Bedur treated him differently.

Bedur broke the kiss and hovered over him. He looked anxious. “You know … what I want.”

Serrin gazed into his deep amber eyes. “Yes.” He flipped Bedur over onto his back, then reached under the mattress for the cuffs that were kept there. He fastened Bedur’s wrists to the metal bar, feeling the ruler’s unblinking stare watching his every move. He was breathing fast and heavy. Serrin knew he both craved and feared what was coming next.

The belt was kept in the nightstand drawer. Serrin retrieved it and approached Bedur, who kept his eyes on him.

First, the warm up. He doubled the belt and lightly flicked it on Bedur’s arms, flanks and thighs. Bedur squirmed and jerked his body, but didn’t move away.

Serrin expertly kept him in a state of arousal, his skin darkening slightly where the belt hit. Next time the blindfold. It was more exciting when you didn’t know where you’d be struck or when. He’d been thinking Bedur would benefit from the extra spiciness a blindfold would provide, but maybe his need for control would make him reject the idea.

Bedur might let Serrin dominate in the bedroom, but he was still the ruler. Serrin still had to tread carefully.

He needed this time to regain his own arousal. When he first became human he was surprised at how much recovery time he needed before the next round. SDS hybrids could go all night and pure SDS robots even longer.

Fortunately, he felt his cock begin to swell. As much as he was conflicted about Bedur, his body never failed to react to him.

As soon as he was ready he tossed the belt aside. He lifted Bedur’s legs as Bedur watched him with huge eyes and a closed mouth. Serrin had to admit he felt a surge of power. He could not only fuck the ruler but shut him up as well.

He entered him dry. It was a bit painful for him, with the tip still sensitized from before, but not as much as for Bedur who gritted his teeth and jerked at the bar above his head.

Serrin saw Bedur stifle a moan. And a gag next time too. Why not? Bedur would probably enjoy it. He guessed they both would. After a decent number of thrusts, he made sure Bedur hit his climax, then let himself reach his own release.

As he came, he closed his eyes and for the second time today another man’s face flashed in his mind. Seeing his face was what did it every time.

Serrin had been built for sex as an SDS hybrid and hadn’t lost his taste for it as a full human being, nor had he forgotten his training. He could satisfy any man or woman and enjoy himself in any scenario.

So why did he think of this person every time he came?