At 5 A.M. US Eastern time on Saturday, December 14th, every person in the world underwent what became known as a 'humantaur' fusion. While every transformation seemed to have unique variations, the majority of people ended up in one of two configurations. Those fused in the 'traditional' manner appeared very similar to what many would recognize as a centaur, but with the bottom half being a human, rather than a horse. Many of those in the 'bottom' position had some or all of their facial features 'pushed through' their top partner's ass and crotch, allowing them to see, talk, and smell from between their new partner's legs. However, not all bottoms were so lucky.
The other common configuration became known as the 'standing humantaur'. Typically, the bottom in this configuration looked completely normal from the shoulders down. However, their head had been replaced with their top's upper body, from their waist up. Often standing seven or eight feet tall, standing humantaurs would often have more issues with balance, requiring closer coordination to keep their body from falling over.
For unlucky individuals, their fusions could diverge further. While uncommon, there have been cases where three, four, five, or even six people merged together in one humantaur form. The only known case of a six person fusion is the six Jacobs siblings in a standing humantaur configuration. While the fused form only has one head and one pair of legs, each sibling with a torso and pair of arms that they exclusively control. In interviews, Shelby, the 'top' in this bizarre arrangement, always tries to play the situation off with humor and how they try to make the most of each day. Shelby often said "Eve [the sibling at the very bottom of the fusion] always carried all of us [figuratively] before the Wave, so its not a big change for her, right?"
Another odd fusion happened to a mom turned bottom, Natalie, and her college student son turned top, Peter. The pair had been conjoined in a traditional humantaur configuration, but unlike the vast majority of traditional humantaurs, Peter's genitals had not been removed by the Wave. As a result, despite having her full face in her son's crotch, any natural position would have Peter's balls pressed against her eyes and nose. If Natalie wanted to see, or to smell anything other than her son's ball sweat, she would have to use one of their front legs or have Peter use one of his hands to hold his balls off her face. While Natalie had to deal with her humiliation, Peter also had to deal with his mom's PAWG ass jiggling behind him, getting the pair endless attention from other humantaurs. Both struggling with their own issue, mother and son struggled to not blame each other for all of their new life's problems.
Prior to the Wave, Liz and Becca been living as roommates, each too timid to reveal their feelings to the other. Their entire shared friend group had tried to push the two 'useless lesbians' to ask each other out. Each friend would set up a date, create a group trip that everyone but Liz and Becca would cancel on, tell each to ask the other out, but nothing worked. Eventually, the friend group gave up, but the Fusion Wave didn't have the same problems. Now fused together in a standing humantaur configuration with the petite and feminine Liz on top and the busty butch Becca on bottom, the pair have no choice but to confront their feelings for each other. Or so their friend group hopes.
Jane and Byron were one of the fusions who adapted to the Wave most easily. Formerly a married couple in their late 20s, now traditional humantaur, the pair felt their bond became even stronger after Byron got fused to his wife's ass. Independently wealthy, the pair now got to spend all the time in the world with each other. Using their new form, they trained for marathons, traveled the world, hit up swinger's clubs, and participated in humantaur jousting, a sport gaining popularity in the post-Wave world. The two could feel their relationship grow stronger and stronger as they experienced all the world could offer a humantaur.
The night before the Wave, Chris had hit up his old booty call, Sarah. While she had always been a fantastic lay and the best sex he had ever had, Chris had been avoiding her. Sarah had always been an absolute nymphomaniac and had encouraged riskier and riskier behavior from him - no condoms, public sex, sex with strangers she found, dragging him to drug dens. While Chris had been avoiding her for months, this night his dick led the way, not his brain. Now, he and Sarah had been fused together, him as her 'bottom', much to her delight and his horror. Sarah planned to use her new cock to explore all the new sexual exploits she hadn't been able to experience before the wave. Minutes after the wave, despite his distress, Chris could feel her intense sex drive taking over their shared body, causing his cock to get harder and harder, all out of his control. With Sarah able to override his control, he could only watch from her pubic mound as she took control over their merged body.