Anthony thought he was dreaming. For a while, it seemed as though he'd been sitting back outside of his own body watching himself with Purity. Except, the man he saw looked little like the body he knew. And Purity looked nothing like she should. From time to time, his consciousness lurched back into his body. It would be met by a saturating, numbing pleasure. Purity wrapped tight around his throbbing dick, hips quivering under his powerful fingertips, her thighs squeezing tight against him. The ecstasy would peak and once again, he would be sitting beside himself wondering how it could be possible to feel so much all at once.
Purity used these interludes to pace back and forth in front of him. When Anthony concentrated, he remembered a scrawny, mousy girl with a decent butt if nothing else. The version of Purity scooping his cum from between her legs while idly thinking looked nothing like that. A fat ass wobbled behind her, moving with a delicious gravity with even her slightest step. A pair of F cups hung from her chest, sporting nipples that jutted out a full inch, oozing a small stream of milk. From time to time, Purity would bring her hand up, squeeze her breast and send a little jet of milk arcing into the air and causing Anthony to lick his lips. Her hands moved over her body while she lapped up his cum from wherever it had most recently been deposited. The places where it hadn't been were few and far between. Anthony grinned dumbly as he remembered the various ways she'd milked him in the past hour.
She stopped her pacing and knelt between his legs, yanking him back into the moment. "I don't think it's growing any more," she said. Her hand gripped the base of his cock. It swelled in response. She pulled it from one side to the other, lining up her free arm with its length. "Almost as big around as my wrist. That's crazy."
"What are you...doing?" he asked. His tongue felt thick and speaking was like wading through a high flood.
"You keep forgetting," she answered. "Fucking makes our changes go faster. So we fuck or I suck your dick or you jerk off on my ass, we wait, and then I compare. Look how big my titties are now. And, this is real crazy. Look at this." She gathered her arms underneath her breasts and lifted. The heavy breasts rose up with her folded arms to reveal small mounds jutting out just underneath. Dark spots, slightly raised, adorned the mounds' centers. "Second set of boobs. Isn't that wild?"
His head swirled as he reached out and rubbed his thumb across her burgeoning new nipple. He wanted to say, "Impossible," but it came out as a gurgled moan as Purity squeezed his dick. The steady stream of precum glistened on her hand as he watched it move up and down his dick. Anthony's balls felt heavy as she brought her hand up to massage them. He grunted in frustration as she took her hand away.
"It's not time for you to cum again yet," Purity said. "I just got a fresh load and it needs time to do its thing. Look how my pussy is getting all fat and plump." She stood up with her legs spread, showing off her engorged labia. "God it feels like I'm almost cumming just from touching them. Used to take like thirty minutes with a vibrator to get there." She gently moved his hand away as he reached out for her. "Ah-ah, not yet like I said. You need a new belly full of milk. Your cum is making me change, but my milk does it for you. I know you'd probably rather have Joy's boobs to suck on, but I don't know where she is." Purity paused and looked around. "And...I think if we stop fucking I'll lose all track of myself. Like you, remember? When you showed up, you were eight inches of cock and a boiled brain. Now you're ten inches and a slightly tepid brain, I think."
He wanted to answer, but she straddled him, pushing his dick down by sandwiching it between her ass cheeks. He could feel the radiating heat off her asshole on the middle of his dick. He would have thrown her to the floor and fucked her immediately if she'd not usurped him by shoving her nipple into his mouth. She sighed happily as he sucked. A thick stream of warm milk flooded into his mouth. He moaned, pressing his face into the soft flesh as his hands roamed over her body. A drench of hormones flooded his head as he pulled her body closer to his. She'd mentioned Joy, and a fond bloom of memory appeared. Some small part of him did wish it was Joy's body pressing into his, but Purity's was here and that's what mattered. Her white flesh yielded to his touch as he pawed at her. With each burst of milk in his mouth, her body wriggled against him, ass grinding against his aching cock. Had he fucked her ass yet? He couldn't remember. She wasn't leaking cum from it, so he figured not. Her pussy on other hand drooled a steady stream of his cum and her juices. His pelvis was slick as she gently gyrated against him.
Purity moved his other hand over to her free breast. He squeezed, fingers digging into the firm flesh as milk sprayed against his palm. She brought his hand up and licked it clean, smiling down at him as she did. "You know what? I bet you could cum just from sliding in my ass crack like this." She wiggled down and slid back, almost far enough for his dick to slip up and into her pussy. Before that, she slid forward again, letting his dick glide through the cleft of her ass cheeks. "That'd be an awful waste though," she said. "Want to put it inside me again? I think I can fit the whole thing this time."
He took his mouth off her breast long enough to nod. She stood up to reposition. He looked at his dick, marveling at the length and width of it, before his gaze drifted up to see Purity turned around before him. She bent at the waist, wiggling her ass at him as she pulled open her cheeks. He grabbed hold of her hips and guided her down, sheathing himself inside of her again. Inside the pure warmth, the fog in his head cleared. "Purity, we need to stop. We're making it worse."
"Not worse, better." She rested her hands on his knees, letting her tits sway with her motion. "Every load makes me feel normal. Not different or quirky or chicken-girl, but normal. No anxiety. No void in me. It makes sense. I have titties, I get fucked. Your big, fat, black dick gushes inside me and everything makes sense. This is fixing me."
Anthony's hands grabbed her ass. The heavy cheeks squished under his grip, bringing him a primal sort of joy. It felt insincere to try and change her mind while he was seven inches inside of her, but he wanted to use his brain while he still had it. "You weren't broken, Purity."
"Oh, shut the fuck up," she slammed back on his dick harder and faster with each word. "Just let me enjoy fucking this fat, fucking cock of --unngh!"
Her pussy spasmed around him, squeezing his entire length with a slow ripple of tightening muscle. Combined with seeing her body slightly contort in pleasure, Anthony let himself fall over the edge as well. His balls contracted and his legs strained out as he erupted inside of her. He went lightheaded from the strain as his dick pumped rope after rope of cum into her well used pussy. When it finally stopped, Purity slid forward off his dick with a wet slurp, rolling onto her side on the floor. A glazed, blissful visage peered up at Anthony as her body twitched and jerked. He leaned forward from the couch, worried she'd had some kind of fit. To ease his concern, she gurgled and smiled wider. "That was the best one...yet," she said.
Anthony didn't hear her. He was focused on the second set of tits. They'd already doubled in size. Worse, as he leaned forward he notice a weird feeling in his lower back. He reached around behind himself. The horror he felt was muted due to Purity spreading her legs to show off his cum oozing out of her gaping pussy, but the shock of feeling a short tail emerging from the base of his spine still cut through his haze enough to get him on his feet. "Fuck. We need to find the others."
***
Becca ran cold water over her wrists. She didn't remember who taught her the trick, but she always did it when stressed. It helped, a little.