Ongoing evolution, and the neighbors

Dani and Jenny awoke the next morning seemingly reverting to their "normal" and boring forms. The virus' mutation in Jenny obviously didn't need the post orgasm feeding to return to human, but.. the bathroom needed cleaning, and with incredible appetite and efficiency the feeding began. Still naked, Dani noticed her breasts and nipples were slightly swollen and tender, and her clitoris distended perhaps an inch from its hood and her labia meaty and dangling below her pussy...

"That was incredible, Dani... I never had an orgasm like that in my life."

"I'm sorry, Jenny, I have no idea what happened last night after I blacked out."

Jenny went on to explain how the transformation seemed to react differently, pushing against constraint, how she plunged her cock into her pussy by instinct and morphed her body into a hyper muscular being with all the sexual enhancements to boot.

They theorized the virus reacted to threats unique to each individual as the infection began, and mutated to respond.

"I'm worried, Jenny. It seems like the sunset is the trigger, so I think we can live our lives normally... but this morning I'm different, some of the changes didnt go away. I'm worried about being discovered, and vaccinated. Last night I knew what I was doing... I was in control, but at the same time I wasn't. "

"I don't know what's going to happen tonight. We know its coming, so lets embrace it and enjoy it. We have a gift and gawd does it feel good. What do you say we take on Zach tonight?"

Dani's angst wasn't diminished by Jenny's reassurance, but the sexual hunger in her modified genes and the need to orgasm gradually overwhelmed the concern.

"What about his girlfriend Sunny?", said Dani.

"Don't worry, I think I have a plan."

Dani went to her room and dressed for the day. Sliding on cotton panties, the fabric brushed her engorged organ and sent a ripple of pleasure waving over her body. Staring in the mirror didnt help, the vision of the bulge caused it to swell even more. "This is not going to work", she said to her self, removing them. "I won't be able to focus at work today, it going to have to be a something loose again to let this breathe." The bralette was also problematic, her breasts probably only B size, but still uncomfortable and spilling out the sides, she pulled it off. Sighing she buttoned on a sundress, commando underneath. Off to the office she went.

Jenny didn't think she'd seen any permanent changes, thankfully, and put on her usual yoga pants, sport bra, and t-shirt and left to teach classes for the day.

Arriving at the studio early, she began her usual stretching routine. The comfort and give of the fabric gliding across her chest and crotch, created the arousal she hoped to avoid. Her clit throbbed and her nipples rose. As she leaned out prone over one leg, stretching her hamstring, she caught a flash of blue in her eye. The vein running down her bicep to her hand emerged swollen for a few seconds and then receded.

Returning home for the evening, Jenny walked from the parking lot into the complex with Sunny. Sunny was a 5'7" redhead, the locks cascading down to her ass, with all the trimmings: transclucent skin, green eyes and all natural 38DD breasts. She was a pharmaceutical rep, trimmed in a green plunging bandage dress, her cleavage pushed up and out to sell her wares, and herself, all day. Jenny felt her clitoris throb, not aware of the pheromones wafting from her body. She had always noticed Sunny's sexuality, but now the virus had **** a reaction that sealed Sunny's fate. They continued to walk and Jenny noticed Sunny blush and her nipples push out visible against the fabric.

"Hey, would you two like to come over dinner?", Sunny said. "Zach's already home making surf and turf... we had planned on another couple coming over but I think I should cancel with them. You guys have lived next to us for two years. I think we should get to know you better. No need to change, come as you are!"

Meanwhile, Dani's day passed by slowly. She kept her legs crossed in her cube but her clitoris throbbed and crawled out further by the hour. Each trip to the restroom she hiked up her skirt, the organ staring back at her soft and dangling to her midthigh. The labia hung loose and fleshy. After lunch it stopped she noticed the top button of her dress had pulled taught, her expanding breasts pushing out to fill the loose fabric... She felt self-conscious of the changes, wanting to live a normal by day of at all possible. Suprisingly, in meetings, no one seemed to notice, the virus altering its phermones to cloak Dani's changes in disinterest from others during the day.

Sighing with relief that the day was over, Dani arrived at home to catch a glimpse of Sunny and Jenny near the apartment building entrance. Jenny waived and the couple waited for Dani to catch up.

As the trio entered Sunny and Zach's apartment, Zach looked up surprised. "Where are Rose and Don?", he asked. "Don't worry, hun, I called them up and cancelled. I was talking to Jenny in the parking lot and just thought it would be more neighborly to have the girls over."

Zach briefly stared at Sunny's fabric restrained nipples. The combined virulent scent of the infected duo wafted into the instinctive primal cortext of his brain. Zach snapped to, and responded, "Of course, why not."

The group enjoyed their meal, engaged in small talk, news of the day, gossip, careers and such. Upon finishing, the unsuspecting couple was still in control, but barely, Zach with one hand on his groin and another up Sunny's dress. Sunny's pulse rose and beads of sweat formed on her forehead.

After finishing a bottle of wine, the infected led the couple to the bedroom. The ladies guided Zach to lay on the bed, stripping him naked. Sunny reached into the nightstand by instinct, found the restraints and tied Zach's wrists tight to the headboard. "We know deep inside you can hear and see everything happening and it feels like you have no control", Jenny said. "Don't be afraid, we have a wonderful sensual world to introduce to you."

Standing at the foot of the bed, Dani faced Sunny and began to kiss her deeply, grabbing hold of the redhead by the shoulders, their clothed breasts pressing together. Zach watched intensely, his erection throbbing. Jenny walked around behind Sunny and grabbed Sunny by the waist pulling their bodies together, kissing her by the neck and pulling up her dress, Jenny's pubis pressing against Sunny's succulent ass.

The sun began to set and the virus took over... Dani's clit flowed out in length in girth in seconds, free from constraint, rising out from under the sundress and stopping between Sunny's legs, pushing hard against her still pantied, still uninfected vagina. Jenny unzipped Sunny's dress from behind and it fell to the floor, while simultaneously the petite blonde had her sundress unbuttoned by Sunny. Jenny unlatched the redhead's bra, and her endowments tumbled out in full view. Zach's eyes bulged in disbelief as Dani grabbed the redhead's hips and thrust her member through the thin fabric and into her sopping pussy.

Sunny shrieked in delight and pain as her body was filled by the veined monster. It climbed upward to her cervix, pushing through with a grunt and shove, resting in Sunny's uterus, the phrenulum flange locking, allowing no retreat. Dani panted in pleasure, the viral extension losing its virginity in Sunny's tight canal.

Pausing for a moment, Dani's breasts expanded outwards to their full glory, filling the two feet of space between left between the coupling by the veined shaft that could be driven no further. The fully hypersexual form of Dani reached down and guided each finger length nipple toward Sunny's milky breasts one by one. The dripping distension touched Sunny's already substantial left nipple, the virus responding by using its prehensile opening to grab and pull Sunny's nipple in, latching their breasts together. The right followed. Dani and Sunny shuddered as the mating was complete. Dani reveled in the new sensations. The blonde's glands pushed her infected milk into Sunny, the redheads breasts expanding to E cup as the first viral ingredient finished its task.

Watching this process from over Sunny's shoulder, Jenny rubbed her clit through the yoga fabric with one hand the other stroking the exposed portion of Dani's cock under Sunny's ass cheek. Jenny felt the channel under the girth of Dani's cock filling with the virulent transformative semen. Sunny's labia began the second step and grew out, encapsulating the first 6 inches of Dani's exposed cock. The drapes of flesh pulled, sentient, trying to suck the rod further in. The telepathic infectious cells knew the time was short before Dani would explode, and they needed Jenny to join.

Zach helpless to do anything but watch, strained against the ropes, his libido unable to participate.

As the dusk faded to night, it was time for Jenny's show. She stepped back away from the entwined bodies in front of her to give room for the growth to come. Looking over at Zach she whispered, "Watch and enjoy the view... your time is soon and your life will be different forever." Tilting her head back and closing her eyes, the mutation took over. Blood flowed from her heart to her groin. The waiting clitoris desecended down the yoga pant leg emerging at the cuff. Its girth grew and visible mushroom tip expanded. She pulled off her shirt exposing the sports bra and areolae and nipples pulsing against the fabric, milk dripping on the floor. Already panting furiously her mammaries expanded in steps, pushing the elasticity beyond its limit. The straps snapped next, exposing the breasts to the pheromones in the air. Arching her back the chest band broke and they were free, extending three feet from her body. The veins began to rise to the surface of her flesh as the muscle expanded. Shoulders, lats, biceps, triceps, abs, quads, glutes, calves, forearms... the large ribbed blue network even rose on the fleshy mammaries. As they popped out on her areolae, Jenny gasped in pleasure as the milk surged and coated the duo in front of her. She turned and soaked Zach and the bed for good measure. The largest vein descended from her navel below the waist band of the straining yoga pants. As the virus hit the base of her cock, it sprung to erection. The pants split at every seam and fell to the floor.

The hyper form of Jenny stepped forward and plunged its cock into the anus of Sunny. The constriction of the redhead's sphincter was a new sensation for Jenny, causing her to scream in pleasure. Stepping futher forward, Jenny and Dani's dual impalement pushed Sunny's semiconscious form up in the air, her feet losing contact with the white pool on the floor. The duo started to piston in and out of Sunny's orifices. They could feel each other through the thin membrane separating their hypersexual organs. After only a dozen thrusts the infected came simultaneously and Sunny screamed. Excess fluids streamed out of the overburdened openings.

The trio slunk to the floor in the white sticky mess. Dani and Jenny blacked out but Sunny remained conscious, only partially through her transformation. The virus melded with Sunny's conscience and searched for food to catalyst to mutate further. Sunny crawled across the floor, leaving a trail of remnant virus seeping from her bottom. Reaching the door, she fished through her work satchel which contained physicians samples of several new ****. Reaching for an estrogen replacement and an ED compound, she ripped open the foils and consumed them both, emptying the boxes. Standing up shakily she stared at the next viral host on the bed. Before she could take a step, the viral cells began absorbing the chemical compounds in her belly. Her breasts pushed out further and wider, draping down to her thighs. Stepping to the bed, she climbed on top of Zach, resting a breast on either side of his body. Zach faced Sunny's rear. She descended on his human cock and began to suck rhythmically. She scooted her bottom closer to Zach's face. The lips of her pussy began to extend out enveloping his face. Instinctively he began to lick her clit. With his first orgasm deep in her throat, his semen fed the virus further... The cocktail of male and hyper cum, lactate and pharmaceuticals finally spurred Sunny's clit growth. With her boyfriends face held in place by her fleshy flanges, the clit descended Zach's esophagus, traversing his stomach and intestines, emerging from his anus in front of Sunny's face. She reached down and masturbated the mutated extension until she came all over the matress, and also passed out.