Susan is a 72-year-old widow who lives alone with her pomeranian pet dog, Max. All of her children, now grown and married, who often visited her, bringing her grandchildren to see her. As much as she liked them, she also liked a little peace and quiet, so she lived in that neighborhood enjoying her retirement. She was quietly reading a book in her living room when she noticed that the neighborhood was noisier than usual. Susan tried to ignore it, but Max started barking outside, just as she saw the trio of giant monsters having sex across the street over the neighbors' completely destroyed house.
Wondering how such large creatures arrived in that neighborhood without anyone noticing, Susan watched through the window, however, she was startled when the giant eight-legged centaur came and it slammed one of its hoofs hard on the ground. The weight of the impact was enough to make her house shake and some window panes shatter. She felt the scent of flowers, which always soothed her, enter through the openings left in the window. She then looked outside looking for where this smell was coming from, realizing it was coming from the monsters.
Susan then felt her breathing muffled, as if she were wearing a tight mask. She raised her hand to her face and found smooth, closed skin where her mouth should have been. Her bra was getting tighter and she noticed her breasts getting bigger, so she took off her dress and bra, thus seeing her breasts getting bigger and firmer than when she was young, along with the fact that her nipples had been replaced by a pair of mouths. She played with her lips, while the wrinkles and imperfections in her skin disappeared. Soon, she felt liquid trickle down her chin, which upon wiping she found a new vertical opening in her face that replaced her mouth and nose.
She dug her fingers into the new pussy on her face, moaning at the sensitivity. Susan realized that she was very horny, and she hadn't been horny in years. Her dead sex drive had been resurrected and she was loving it all, including the changes that had taken place in her body. She then felt an extra weight rise on her back and her buttocks stretching back at the same time as the hair on the back of her head fell out, so she saw that the white of them gave way to the black color she had when she was younger. Lumps also grew behind her shoulders and lengthened.
Susan discovered exactly what happened when her field of vision was enlarged by a new pair of eyes that opened at the back of her head, leaving a single 360° field of vision. The extra weights on her back were a new pair of breasts with lips, and the bumps on her shoulders grew into a new pair of arms while her buttocks became a new pair of legs. After confirming that the back of her head had formed a second complete face, also with a pussy instead of a mouth and nose, Susan confirmed that the back of her body was almost a perfect copy of the front, the only differences the absence of a navel and the fact that she has an anus between her legs.
With the 360° field of view, Susan realized that Max had transformed too. He grew into an anthro dog girl who had eight massive breasts, but in her head it had no face, but a huge hard cock pointing in front of her. Like her owner, Max also had two faces now and they were located on her upper pair of breasts.
Very excited Susan wanted to have sex with her dog, wondering if she could still consider Max a dog. That's when she felt something between her legs and looked down, seeing her pussy and anus close and each reverse into a foot-long cock with balls the size of avocados hanging underneath, just as two more bulges grew into one more pair of legs on her sides and four other cocks and ballsacks of equal size to the others grew between them. Standing on her six feet, with her legs wrapped around her like a six-pointed star, Susan, whose top half was two girls conjoined back to back, grabbed and started stroking four of her cocks, then she called Max with her lipples.
The dog girl jumped into her owner's lap, landing so that the dick that grew from where her ass used to be penetrated her pussy, then stuck the dick on her head in the pussy of one of her faces, going deeper until it completely crossed the head and out through the pussy on the face on the other side.
Susan felt like she was in heaven being fucked and fucked by Max, and the feel of her ballsacks bumping against each other in the space beneath her only turned her on even more. She had never felt so turned on and thought she couldn't get any better.
*****
Fred and Erika, who were husband and wife, were at home watching the trio of giant monsters have sex. Fred was late for work, but Erika had convinced him not to leave while the monsters were there, as she was afraid they could crush him without noticing his presence. They were a little scared when the strong impact of the giant eight-legged centaur's hoof against the ground made everything shake and some window panes break. A pleasant smell came through the window, which according to Erika was apple pie and Fred said it was the smell of barbecue.
The couple began to feel horny, which they thought was because of the scene they were witnessing. They started kissing passionately, Fred letting his wife feel through his clothes how hard his cock was. They broke off the kiss when they felt something grow between them, and when they looked down, they saw Fred's shirt swelling with something growing underneath. He removed the shirt and he and his wife watched with excitement as a pair of breasts grew. Due to the focus of attention, they didn't notice Fred's body losing muscle definition and gaining womanly curves, while they didn't see Erika grow and be nullified the foot difference in their height.
Erika's growth was only noticed when she complained that her clothes were tight, which she could only tear off. Fred took the opportunity to take off what he was still wearing from his own clothes.
"You are very sexy as a shemale." Erika said
"And you look very pretty in your new size too." Fred said
The couple embraced again and kissed, pressing their breasts together. Maintaining the position gradually became more difficult, and when they realized it, Fred's right leg and Erika's left leg had merged into one, Fred's right arm had been absorbed into his wife's torso, as had her left arm. of Erika on her husband's torso. They found that their bodies were now fused side by side.
They loved being sharing the same body now, being able to feel everything the other felt. They had a female body with two heads, four breasts in a single line, and three legs with two crotches, having a cock in one and a pussy in the other, but that didn't last. The couple felt something squirming inside Erica's pussy, so they looked up and saw her vagina shrink and close completely before inverting into a ballsack and her clit growing into a cock. Erika's new dick quickly reached the size of her husband's, and when that happened, Fred's dick started to grow too, keeping pace with hers. Both dicks continued to grow until they reached two feet in length. Both ballsacks contained balls the size of melons.
With this step of the change completed, Fred and Erika kissed while double jerking off, but a new change began. Their hindquarters leaned back, giving them a humantaur body. Their new body extension was wider, being supported by four legs, leaving them with a total of seven legs. The extra width fit right in with the three asses they had back there, and on each of the three rear crotches, they had a pussy.
Hugely horny, the couple wanted something inside their new rear pussies, but not only were they hard to reach, they were frustrated. They had too many genitals to handle with just two hands. That's when they heard a moaning sound coming from the house next to theirs.
*****
Susan was having the time of her life. She didn't care what caused her to change, it must be a miracle because she had never felt so good and she didn't think she could get any better. At this time she saw a pair of conjoined shemales looking at her through the window.
"Come in and join us if you like, the back door is unlocked." Susan said and the visitor walked around the house. Soon the seven-legged humantaur reached her room and turned her back to her, getting on the opposite side where she fucked Max, and begged her to fuck their pussies. They continued and soon everyone came, torrents of cum gushing out everywhere.