Succumbing

The passengers watched in horror as Brian's voice became higher-pitched and feminine and his chest swelled with titflesh. They looked at each other in disbelief, most not understanding what they were seeing. Little did they know, the pheromones the Martian emitted while fucking were beginning to take effect. In a cramped environment like the train, the Martian didn't even need to fuck all of them. It's true exposure would make them too horny to resist, but long enough exposure would transform them into breeders even if they weren't fucked. One by one, they would all succumb to their irresistible urge as their bodies feminized, transforming into the perfect vessels for the Martian's seed.

As the Martian finally released his hot, sticky cum into Brian's new pussy, Brian felt a wave of euphoria wash over him at the feel of the hot cum splashing inside his snatch. The feel of the Martian coating his walls sent him into a screaming, shuddering climax. With a satisfied grin, the Martian pulled out of Brian's cunt, letting his massive load leak out of Brian's gaping pussy. Brian knew that he would never be the same again, but he didn't care. All he could think about was how incredible it had felt to be used. Somehow he knew he was pregnant, but his only concern was that the Martian probably wouldn't fuck him again until he gave birth.

Brian looked around at the remaining victims huddled in the corner. Their expressions were a mix of shock and arousal as their bodies betrayed them, transforming into the perfect playthings for the Martians. Despite the terror on their faces, they couldn't help but touch themselves or grind against each other. All of them were clearly affected by the pheromones and budding breasts were already visible on the men. At the rate they were changing, they were not far off from losing their masculinity completely.

As Brian watched the Martian move on to another passenger, he felt a sense of pride welling up inside him. He had been the first. The first to take the master's cock. The first to be enlightened to their proper place. The first to be bitched. With each passing moment, more and more people were begging to become Breeders. The only question was how many would get to feel the Martian's cock before they'd all been bitched.