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"My, you're showing already," Palpatine cooed, running a possessive hand over the bump that had appeared on Luke's stomach.
Luke tried to shift away, but Palpatine had him caged between his body and his hand. Like always, recently. The bars of the cage might be transparent, but they were still there, like the elegant little bracelets that made Luke's sense of the Force waver like ears filled with loud static until he had no choice but to retreat into his crude flesh and cut himself off from the Force, leaving him even more at Palpatine's mercy.
"Are you enjoying your ceremonial clothing?" Palpatine asked.
"No, your Highness." Luke did not enjoy the shift that was so thin as to be translucent. He did not enjoy being put on display, bump and all. He did not enjoy the thought of what was to come.
"Then you will have to enjoy having it taken off." Palpatine's hand left his stomach only to grasp his shoulder like a vise. "Come. The Empire awaits you."
Luke was led out of Palpatine's rooms. Imperial Guards peeled off the door to escort them to the throne room.
Everything here was black and white, sterile monochrome, nothing living and nothing warm. Luke shivered in his unclothed and barefooted state. He crossed his arms over himself.
"None of that," Palpatine chided. "The galaxy will see all of you."
In a sense, the pregnancy was a relief. At the start, Palpatine would've just electrocuted him at the slightest misstep, real or imagined. Now, he received exactly as much mercy as would keep him from miscarrying. He uncrossed his arms nonetheless.
The doors to the throne room creaked open before them. The Imperial Guards stayed. Luke was pulled to the central dais and made to kneel next to Palpatine on his throne.
"Citizens of the Empire," Palpatine addressed the Moffs, Generals, and Admirals present. Luke spied several holocam droids hovering in the air. "Today is another glorious day for the Empire. Some months ago, the Rebel scourge was broken when they tried and failed to assault the Death Star over Endor. Last week brought news of the death of the final of the Rebel leaders, Mon Mothma.
"The elimination of this threat will bring a new age of prosperity to the Empire. In its honor, I have chosen to take on a consort. Luke is a young omega from Tatooine, a wasteland in dire need of the law and order the Empire has brought. In the cradle of the Empire he will swell with child like the Empire swells with exuberation at the Rebel defeat."
Luke could feel every pair of eyes in the room glance at his stomach and observe the small bump there. He bit his lip. He felt exposed – the shift was even worse than being naked; naked, he would simply be partially-dehumanized display; with the fabric that blocked nothing, he looked much too much like a willing participant.
"Rise, my consort, and we will seal this union."
Luke stumbled to his feet unwillingly. He could refuse, spite Palpatine in public, but he would be electrocuted for it, possibly to death. Palpatine had also hinted that he held some Rebels captive. Luke needed to live until he could find where they were held and free them.
Palpatine pulled him over and made him straddle his lap. Luke had expected him to push up the shift immediately, but instead, he cradled Luke's face in his hands and pulled him in for a kiss.
It was disgusting. Luke felt a shiver run through his body as he instinctively jerked away, but Palpatine's grip was augmented with the Force and he got nowhere.
"Remember your friends, Luke," Palpatine murmured against his lips. "I suggest you cooperate." He pressed a kiss to the corner of Luke's mouth. "Unless you want them to suffer, I suppose."
Luke winced and steeled himself. For the next kiss, he held still and let Palpatine plunder his mouth. He gagged, once, when Palpatine stuck his tongue down his throat, but didn't rip himself off the man or vomit, despite how much he wanted to.
Palpatine's hands then drifted down to the hem of the shift and raised it above Luke's bump. "Exquisite," he murmured. "Such a shame your father was a beta."
He then pulled at his own trousers and steered Luke down onto his cock. Luke heard the squelch from the secretions of his own body – a product of being raised on dry Tatooine and now being on water-rich Coruscant, or perhaps a product of pregnancy hormones, he told himself.
The audience let out a noise as Palpatine pulled Luke up and lowered him down again with an even louder squelch. Luke gasped, some omega instinct telling him he should cooperate and let himself be taken. Nerves sensitive from pregnancy fired at the drag against them and sent unfortunately pleasurable shivers up his spine.
"Keeping you pregnant will be such an appealing task," Palpatine said as he made Luke bounce on his dick. "I will enjoy seeing you hollowed out and filled with only my child."
Luke did not speak. He closed his eyes and tried to endure it.
But Palpatine never let him do so. He took Luke's cock in hand and stroked it harshly, making Luke tremble. Every nerve in Luke's lower half was on fire, sending unwanted pleasure up his spine.
A particularly harsh tug at his dick made him come with a shout. He clenched hard around Palpatine and released over their stomachs.
Palpatine's hands fell to frame Luke's bump as he thrust once, twice, then came silently. Luke felt his knot swell within him, trapping him.
"Perhaps I should keep you by my side so I may watch you grow into your new role," Palpatine mused. It was a threat. "It wouldn't do to miss your bump swelling to its final dimensions. If you are carrying twins – well. I'm sure you can imagine the appeal."
Luke shuddered but did not comment. He shifted a bit, and Palpatine's now softened dick slipped out of him. Age had not affected his sex drive or ability to knot, but his knots thankfully didn't last long.
"The marriage has been consummated," Palpatine declared for the audience. "I and my consort shall retreat to our marital bed in celebration of the Empire's prosperity."
He then swung Luke up with the Force and carried him in his arms. He turned so that everyone could see the seed dripping from Luke's hole and the bump silhouetting the shift rucked above it.
"Today the galaxy and all your former Rebel friends saw the true might of the Empire," Palpatine said in the corridor. "That, too, should be celebrated along with your pregnancy."
Luke did not reply. This, too, was temporary. He only had to endure.