Many thanks to users roftlheory and pU55wetNcreamy for their assistance with editing!
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She lay spread-eagle on the bed as she had been instructed. She'd been told not to move, lest she interrupt the dragon's passion and suffer a grievous injury. She knew he would take her in the rear, as the dragon's attendants had spent days preparing her asshole. It had been deeply humiliating, letting them fill her with bulb-shaped instruments, first small then larger and larger until she wondered at how her body could spread so wide. At least now she was ready for him.
She had been terrified, when she first received news that she was chosen as this year's tribute to the dragon lords in the mountains. Her mother had wailed endlessly and her father had sat stony-faced with shock. But this was their homeland's agreement to keep the dragons at bay: send tribute every year or else have girls disappear without warning. Not that she was a girl; she had seen twenty-one summers already. Perhaps if she hadn't waited so long to get married, at least she would have a human for a husband instead of a dragon.
No dragon's bride ever returned from the mountains, that was all anyone knew. She shivered with cold, despite the sulfurous warmth in the air against her naked skin. Once chosen and delivered, they were never heard from again. Did they die, consummating their marriage? Were they eaten afterwards? Both possibilities were horrifying. She swallowed and tried to breathe deeply, as the dragon's attendants had taught her: in slowly, out slowly, to still her frantic heartbeat. They hadn't said anything of what would happen afterwards, so perhaps there was hope... or maybe there was no point in telling her she was about to die.
No, she thought, shaking her head. It was more likely that the dragons held on to their prized brides just as jealously as they guarded their treasure hoards. That was how her people had first encountered them: Raging against human incursions into their territory, giant scaled beasts as silvery in the sunlight as a fish, but as lithe and deadly to a person as a cat to a mouse. They had long, lizard-like faces and big, sharp claws. Sitting on their haunches, they were as large as a doorway; standing full height, their clawed wings could reach the roof of a house. She shivered again. She could only imagine how large his male organ would be.
She heard a low rumble and was hit by a wave of warmth; he had arrived! She shut her eyes, not wanting to see how large and frightening he was. She could feel him grow closer and closer, as the heat rolling off his body grew more intense. Suddenly a clawed hand was at her side, gripping her gently despite its size, and flipped her over on the soft bed. It was joined by a second, now both pulling at her hips. He meant to take her from behind, she realized, just like a dog or horse.
Cheeks burning with shame, she raised her buttocks high towards the vaulted ceiling. The dragon gave a low hiss, and she froze. She had moved on her own; had this angered him? She swallowed down her fear, trying not to shake as her heartbeat sped ever faster. But soon the sound changed to a low purr, and she felt him draw closer. He spread apart her butt cheeks with his leathery paws, and she felt the hard, hot tip of his dragon's cock against her asshole. It began leaking warm, oily fluid, and for a moment she wondered with relief if he were already done.
But no; he started to move around her asshole, rubbing and rubbing until she began to feel an ache in her behind that she had never felt before. She hadn't sensed it when she'd been training her body for him - was it some draconic magic, or perhaps the effect of how warm he was? He continued massaging her slowly in a circular motion with his dick, spreading his viscous precum, and it was all she could do to not move. Her body urged her to writhe and push against him, but she held fast and stayed stock still, remembering as she was told. She wanted more, she realized, and flushed with embarrassment. Was she truly enjoying this degradation? Hopefully he wouldn't notice.
After an unbearably long time, he began pushing harder and harder, until finally the tip of his cock opened her asshole and slid inside. She gasped; he was as large as the largest tool they had trained her with. She felt a moment of pain, wincing as she stifled a cry. But it was soon gone, as her insides filled with his slippery fluid. She could feel the walls of her asshole being stretched thin to make room for his massive organ. He didn't go very far at all, but still she moaned in pleasure despite herself, for his cock was hard and hot and filled her with need. She felt more warm juices ooze out into her ass, and he began rocking back and forth ever so slightly.
She nearly yelped at the sensation; the movement felt wonderful against her tender asshole, sliding across the raw nerves of her opened walls. As soon as she had begun to acclimate to the feeling, the dragon pushed a little deeper inside her, then repeated the process. He did this again and again, lubricating and opening her as he went. She could feel him now, filling her guts beneath her stomach, and hoped we wasn't going to tear her weak flesh. Still, it was pleasurably agonizing, being spread wider and wider, feeling him go deeper and deeper. Her face flushed hot; she felt ashamed, enjoying being used in such a way.
