"Hear me out... How about the aquatic one?" Natalie said with a slight glint in her eye.
"A-aquatic? You want us to become gross fish-people or something?" Jade responded with a disgusted tone.
"No! You— Ugh, I was thinking we'd become mermaids or something? Plus you have a pool, so it would be cool to swim." Natalie pleaded with Jade.
"F-fine, I hope this thing works that way. We can swim for a little too, as long as my brother or parents don't come home early." She said, still apprehensive.
Natalie made sure the two of them were still selected by the Chronivac before mousing over the preset. Before Jade could complain, she clicked the button, and the Chronivac's emitter shot them with a beam once again.
"I'm starting to think you're too into being changed by this thing..." Jade sneered at Natalie.
"What can I say, it's something new, plus being a girl isn't THAT bad."
"Being a girl is one thing, but you literally just changed our species." Jade sighed. "Speaking of which, do you feel kind of heavy?"
"N-no?" Natalie said as she looked over at her friend.
Jade's body start to grow, not only in height, but in weight too. Having already become a little chubbier from her previous transformation, her proportions were becoming exaggerated. Her gut was quite a bit larger, spilling out over her expanding thighs. Not to mention, her chest grew generously, easily surpassing Natalie's in size. To balance this out, her body scaled in height, bringing her to around seven feet tall.
"Oh my godddd!" Jade groaned as she watched the world shrink around her. "Natalie, I'm pretty sure mermaids aren't professional basketball players!"
"S-sorry! Just try to stick it out, I still don't know what either of us are becoming!" Natalie shouted back, beginning to feel the effects of her own transformation.
In contrast to Jade, Natalie's size did not change much. The first, very uncomfortable change happened in her lower body. Her legs started to weaken considerably, barely being able to move in her large pants as she sat beside her growing friend. Underneath her clothes, the tops of her legs became a bright, shimmering orange hue with a slick texture. On the underside, her skin turned a cream colour, and became annoyingly stuck to her pants. The worst feeling, however, was her legs starting to feel like they were going to rip in two...
"Hnnng! O-okay, I think I know what I'm gonna be... Are you good Jade?" Natalie grunted as she looked up at the nearly eleven and a half foot tall Jade.
"Fuck no, I'm even fatter than before!" She shouted.
Jade's body grew to her clothes' breaking point, shredding them instantly. As she shifted in her seat, the whole couch creaked under her massive ass. Her further changes were easily seen without her clothes on, as slick black and white skin replaced her own across her chest and torso. She grabbed at it as her hands changed too, feeling the rubbery texture of her skin and the blubber underneath it. She was panting heavily, just trying to close her eyes and see this through... Which was feasible until she felt a strange tapping on her side.
"Oh my, you're huge! And I'm..." Natalie trailed off. Her body was now propped up on the couch, with her feet leaning against Jade's side. Although, what was out of her pants could not even be considered a foot at this point. Instead, she had a two large, suction cupped appendage instead, which curled and had ample dexterity. Before she could even think to move them, a rippling feeling was felt across her "legs", seamlessly splitting the two of them into four. They grew in thickness a little to match how they were before the split, making her fit her pants once more. Mind racing, she tried to control them, but the sensory overload was too much. Even worse, that same splitting feeling was felt again, leaving her with six, thick, squirming tentacles instead of legs, threatening to break her pants right open.
"Phew, okay... C-calm down. Stop squirming..." She attempted to rest her body.
Meanwhile, Jade's situation was not much better. She was about to shout about Natalie's tentacles poking her, but her face started to grow, interrupting her speech. Her mouth grew much larger along with her face, causing her to moan involuntarily. Her nose was rounded and smooth, covered in jet black skin leading up to two white spots where her eyes were. She opened her eyes and swiped her hair out the way. Lifting her hands up to her face, she ran her hands all over it, and tested how her jaw opened and closed.
"Natalie. I'm. A. Fucking. Whale." Jade panted out in disbelief, leaning back in her seat before being interrupted by a growth popping out of her back, a large fin, forcing her forward.
"A-and you're an—"
"Octopus, I know." Natalie said with a small smirk as she pulled her tentacles out of her pants one by one.
Natalie gently nudged each tentacle, sorting out how to control them all. As she did so, the rest of her skin became a little more rubbery. It retained its dark tint, but had slight patterns visible on it, not to mention a couple of suction cups along her arms. She flopped onto the floor and tried pulling herself, which was somewhat slow, but doable.
"Maybe this is kinda cool..." Natalie said as she gracefully picked up a TV remote with one of her new appendages.
"Easy for you to say! I take up this whole couch with my fat ass!" Jade groaned.
"But you're a killer whale! A ferocious beast!" Natalie egged her on.
The new whale girl lurched forward as she felt a worrying amount of pressure above her ass. She stood up, bumping her head on the ceiling and forcing her to crouch. A long, thick tail worked it's way out over her blubbery butt, extending to around six feet long. It was black on the top and white on the underside. At the end of it, a fluke formed, splitting it into two large pointed fins, and completing her transformation. Jade grunted as she sat on the floor, thrashing her tail out of the way to avoid sitting on it.
"This feels WAY too weird, the tail, the blubber, the uh- size... Plus I smell like an entire fish market at this point..." Jade blushed, although it wasn't visible under her dark skin. She had her hand draped across her chest and crotch to hide her parts.
"Can't deny the weirdness. Or the smell... Guessing that's not going away even with a shower." Natalie chuckled, trying to lighten the mood.
"Whatever. Lets go swimming! We'll both move much better in the water." She said, already inching towards the stairs.
"Ugh, alright, fine. I guess we both have to skinny dip though." Jade continued to blush, opting to crawl instead of stand up and hit her head again, unintentionally shoving her large backside in Natalie's face, with everything visible.
The two girls made it upstairs and...