Nathan's the spy, but he has no escape plan

Bianca watched Marisa run off before grabbing the boy that had been lurking outside the door. She recognized him as Nathan, a known pervert among the women of the neighborhood. How he had managed to get into the bunker, Bianca had no idea. She did know however, that he was going to regret it, at least for a few minutes.

"Hey there Nathan," she said bouncing her gigantic tits. Normally, the lecherous stares from behind his glasses would bother her, but she was far from normal anymore. Now, she did it very much on purpose, knowing exactly what was going to happen to him.

Apparently Nathan did too. "Stay back, you monster! I won't let you bait me like you did to Mitch!" he yelled trying to get back to the door, but was unable to shake his arm free.

"Did he look unhappy? I think Mitch is much better off as Marisa anyways. I mean, did you see her in that uniform. Fuck, it makes me hard just thinking about it. Good thing I've got someone to help me with that."

"No no no no no n-FUCK!" Nathan's cries of protest were interrupted by Bianca pushing him against the wall, shredding his clothes to tatters, and pushing her enormous cock into his asshole. It was only thanks to the futa's shaft already being covered with cum and her considerable strength that it went in at all. Nathan hollered and yelled, but could do nothing but brace himself against the gigantic intrusion.

"See, you like it already, my big cock is making you cum so much. Enjoy it while you can, you're not going to be you for long!" Bianca said, thrusting into the yelling boy at a steady pace. Despite her efforts to last as long as she could, the tightness of his butt wasn't to be underestimated, and she quickly felt sperm bubbling up from her always ready balls. "Here it comes!! I hope you're ready to be a busty, slutty futa!!

"NNNOOOOOooooo...." Nathan screamed, feeling the wonderful warmth of cum filling his ass. No wait, it was disgusting. Wasn't it? A second later, his own cock throbbed and fired another load, expelling much more fluid than it had before.

"Mmm, I can already tell you'll be beautiful. And looks like you're going to have one hell of a dick too," Bianca said, caught up in the bliss of cumming with her cock. She could see Nathan's own penis getting bigger, shooting out a blob of cum with each growth spurt. She was tempted to continue plundering his ass as he transformed, but she decided she'd rather watch the creep that had plagued the neighborhood devolve into a mess of lust and desire. She pulled out and allowed the spasming man to fall to the floor, his body bucking as it was altered.

Any muscle definition he had disappeared into the smooth softness of a woman's body. His glasses flew off when his face reformed, becoming delicate and pretty, even with the expression of hopeless lust on it. His shoulders slimmed down and just below, his chest puffed out. In seconds, small breasts had formed, quivering slightly on his smaller chest.

Lower down, his masculine hips widened out into a woman's curves, his fucked ass growing out into a small bubble butt. His well built thighs stayed largely the same, though the muscles underneath softened until they were two gorgeous pillows that any man would want to lay their head on or have wrapped around their body. Between those thighs, a new fresh slit opened up, already dripping a steady stream of lubrication as Nathan's desires spiraled out of control.

He didn't want this, he rationalized. Sure, he had wondered what it would be like to have the curves of a woman, to have the weight of breasts on his chest and a pretty pink pussy between his legs, but he had never wanted it, much less thought it would ever happen. At least he still had his cock, he thought, grabbing the slightly larger shaft with his feminine hand. This proved to be a huge mistake, as the moment he touched it, every nerve in it blasted him with pleasure, breaking his mind and sending him spiraling, allowing his new futa identity to set in fully.

Her changes finalized explosively, the small B breasts on her chest swelling massively with each wave of cum that poured from her cock and pussy. In the momentary pause between blasts of jizz, her cock grew as well, flying past the 12 inch mark, then past 24 inches, before finally stopping somewhere around 30. The bobbing shaft, covered in thick veins and dripping from its massive head, slapped against the changed boy's gigantic tits, the twin orbs hanging heavily on her slim frame, great wobbling masses. The new futa wasted no time in wrapping her cock with the pillowy tits, using them to stimulate herself further and squeeze out more blasts of cum to rain down on her jiggling body.

"I LOVE THIS!! FUCK MY PUSSY, BIANCA, FUCK MY VIRGIN-YEEEEESSSSS!!!" the futa, now named Noel, screamed as Bianca did just as she was asked, ramming her ever ready cock into the new woman's fresh cunt. Both the futanari women writhed against each other, cocks cumming an endless number of times as they changed positions and fucked each other in every hole they could think of, both dreaming of when they could find someone else to fuck and transform into a cock-wielding whore like themselves.