In the deepest, darkest corner of the mermaid caves, John had retreated and curled up into a ball with his arms cradling his still deformed, half-developed merfolk tail. Where no one could see him, John began to sob, lamenting the end of his humanity as he felt the effects of the virus taking hold through every fiber of him. At the very least, he felt some mild comfort from the fact that the lingering discomfort from the change was quickly subsiding.
In fact, not only was it subsiding, he felt strong, incredibly strong in fact. his park ranger job kept him in shape, naturally, but now he dared to look down at himself and noticed that he was now absurdly shredded and chiseled with a sculpted six pack, tree trunk like arms, and a glass cutting chin. It was the kind of physique that was hard to get even with rampant steroid abuse. With his newfound strength, he was able to prop himself upright as he pulled off his now completely ill fitting uniform.
His eyes still welled with tears, but as he blinked, he found the tears kept flowing, not quite from grief anymore, though. He saw his reflection change before his eyes as his eyes inverted their pigment, the whites of his eyes going black and the irises turning pitch black. His mouth aches with pain as he gripped his jaw, feeling his front teeth sharpening into serrated, jagged daggers.
Then he felt the part he was warned about and groaned as he felt his manhood stand tall and erect. He tried to hold onto his dignity and refrained from the urge to feverishly masturbate, finding it more difficult the further in his changes went. Sure enough, he watched as his member grew substantially larger by change’s end. Then, the change moved down to his legs. The incomplete tail finally merged up to the hips, his rigid bones merging into flexible cartilage, he found his penis settling into a small gap at the front of his tail, one which he imagined it could probably retreat back into.
His tail flexed and curled in on itself as it swelled up with the muscles that would let him propel through the ocean with ease and agility. John even found himself smiling, just a bit, as the skin on his tail began to harden and calcify into tough fish scales. They appeared to be a mix of sable black and pearly silver, the silver patch running up the front of his tail and terminating just under the bellybutton. It looked sort of like an orca pattern, but clearly made out of fish scales instead of tough whale skin.
Just then ge felt a pain in his back that felt inexplicably enjoyable. It seemed that his reluctance to the change was eroding but by bit. Eventually, he simply cursed to himself, “fuck it,” and gripped his erection, sighing with satisfaction as it tremored pleasingly in his hand. It took very little pressure to take him over the edge. His chest rose and fell as he ride out the end of his change, his spine extending into a sailsfin like protrusion, with a transparent white membrane connecting both his rear fin, and the membrane of his actual tail.
He leaned back and flicked his tail, regarding his changed body thoughtfully. “Huh… I guess if you’ve gotta become a fish, this isn’t so bad…”