Things had not been going well for Vivi and Nami.
They and the rest of the crew had faced many road blocks on the way to Alubarna to stop the Rebel Army from making their move on the capital. But this was something new.
After taking a short break using rocks for shade, and a big combination of EVERYONE'S unique eccentricities, the two females found themselves in a dark cavern somewhere under where they were resting.
Nami had been angry for a while, but Vivi had been able to calm her down relatively quickly. See how getting mad was gonna get them nowhere, they chose to lay down and rest until the others managed to find them. They laid their cloaks down as impromptu beds, leaving them in the dancer girl outfits Sanji got for them. After that, they closed their eyes and sleep quickly took them.
Several minutes later, the sand near them started to sift. And out came two scorpion-like shapes emerged. They looked similar, but their pincers looked more suited for pulling, and instead of stingers, their tails had a glassy shine similar to gems, and ringed around them was gold colored material. The main difference between them was that one was sapphire blue and the other was emerald green.
Quickly they scuttled over to the girls still forms , blue going to Vivi and green went to Nami. They crawled onto their bellies, towards their navels. They were small, tight little circles, seemingly too small to fit the scorpions, but they could fix that.
Tightly but gently, they each gripped the edges of each girls respective navels carefully, then tugged them open wider. Blue going first, it dove headfirst in to Vivi's navel, and wiggled it's way in, the sensation waking her up.
She sat up as she awoke, looking down where she felt something digging into her, all she caught was the small length of a tail, before all that was left was the tip, now wedged snugly in her navel. The glassy surface and the golden ring around it made it look like she had a decorative navel gem. But she knew exactly what this was, and before she could say anything;
"Where'd this come from?"
Looking to her side, she saw Nami, who had now awakened as well, looking down at her belly, where she now had a gem of her own, this one being green.
While Nami didn't know how or why it got there, she was pleased to have found what she believes to be something expensive. She reached down to take it so that she may examine it closer, but when she grabbed and tugged at it, it wouldn't budge, as if it had been glued into her.
"What the hell? What's with this stupid thing?!", she exclaimed, more confused than angry.
"That isn't just going to come off Nami, and if it is what I think it is, our situation is about to get VERY strange." Vivi had said back, not trying to be ominous but failing. This got Nami worried.
"W-what are you talking about?", the navigator asked, a scared stutter in her voice.
Before the princess could explain, the both stood up abruptly, like they had no control.
"What the hell is happening now?!", Nami yelled, now really freaked out.
Then before anything else could be said, they both had begun to dance. Not just any dance, they were belly dancing. Very sensually, with lots of emphasis on their abdomens.
Nami couldn't even say anything at this point, she was so shocked. All she could do was look at Vivi with a face that pleaded for an answer. Luckily she responded.
"What you saw weren't gems, they were the tails of Dancer Scorpions. Instead of stingers they have those to attract prey and distract predators." The bluenette explained.
"That doesn't explain what's happening!"; at this point, Nami was embarrassed beyond belief at being forced to do this. Sure she had no problem showing off her body before, but at least then it was her choice.
"Well... this only happens... during their mating season...", Vivi replied back nervously.
Nami was silent for a moment, before screaming out," WHY DIDN'T YOU SAY ANYTHING EARLIER?!!" "I NEVER THOUGHT THIS WOULD HAPPEN!!!" And for the next few minutes while continuing to dance, it consisted of Nami screaming at Vivi while the princess just apologized repeatedly.
Then as abruptly as it started, they stopped. "Finally, is it over?", Nami asked while panting. While she wasn't in control of herself, it still took her energy to dance." "Yeah I think so." Vivi replied, tired as well.
But just as she said that, they both now found themselves on their backs, arms at their sides. While that was happening, they felt the digging sensation again and looked back down at their bellies. Catching the gems wiggling slightly, before being pulled into them, as if they were never there. But they felt them." You said this was over!" Nami screamed again. "I forgot! That was only the first half!" " Okay, you'd better explain everything now!!", their little back and forth went.
"The mating rituals for Dancer Scorpions is opposite to regular ones! Instead of females coming to the males, it's the other way around!", Vivi yelled, fear back in her voice.
" Wait, so that means--", you could hear the scared tone in Nami's voice, but before she could finish her sentence, they heard more sand sifting, and looking to their sides they saw themselves surrounded by dozens more scorpions, all of varying colors. The main difference between them and the two from before is that they were notably larger, signifying they were male.
Then without any warning, they all began to march forward towards the girls, who in turn felt more movement within them. Being able to look down, they saw the gems pull themselves into their bellies, leaving their navels open once again.
During all of this, they struggled to get themselves to move, but their efforts were futile.
First, two scorpions crawled onto each of them, both once again gripping their navels and pulling them open, and with two of them they were opened wider than the previous time. Only now they were wide awake and felt everything.
With the opening created, all the other scorpions dove in, the girls shrieks turned to grunts as their middles fought to accommodate all of their new guests. They tried to break free and regain control, but with the original females still within them, they weren't going anywhere.
Especially as their bellies soon began to dome out...
(Several minutes later)
"We-- Ooooh-- never speak of this. Got it?"
Un-- Hmmm-- understood."
That was the conversation between the two girls. Who now had swarms worth of scorpions within them.
Their stomachs now looked like the had swallowed grown men. Their bellies were large and spherical, the skin pulled taught. So large in fact, they couldnt see anything past them or wrap their arms around them. And on top dead center, were the gems, still attached to the tails of the pest that did this to them.
Both couldn't help but let out a moan or whimper as a tremor or bulge ran across the surfaces, reminding them all too well of their predicament.
"How much longer-- Mmph-- will this last?" Nami asked exhaustedly, hand instinctively rubbing where she felt the movement.
"It shouldn't-- Eeee-- be much longer nooooow..." replied Vivi, trailing off at first because she felt the sensation pop up near her belly button, the one spot she couldn't reach, but then she felt more pressure build up, unbearably, in that same spot.
Nami was about to ask what was wrong, but then she felt the same build-up within her. But in their state they could do nothing but scream, and clutch what parts of themselves they could reach.
Soon they could actually see their bellies stretch out with their navels still being the tips.
Then, almost with a pop and hiss, the gems retreated back into them, and the swarms of scorpions came scuttling back out. Crawling off them, heading into random directions, then sinking back beneath the sand.
Soon enough, their bellies were flat again and they found themselves able to move of their own accord. They were then treated to the sight of the scorpions who started this whole experience leaving, oddly with a male next to them, tails intertwined, the sink as well.
All the girls could do was still watch them, hands rubbing their middles, still in slight disbelief of what happened to them.
Nami the looked to Vivi and said," Again, we are never to speak of this to anyone. Clear?"
"You won't get any argument from me."
They were then treated to the sound of," I think I hear them through this wall!" Chopper's youthful voice sounded out.
(Several hours later)
The crew, after reuniting with the female members, were now camping in the night, still ways away from their goal, but getting ever closer.
The men had fallen asleep, and the girls were just getting ready to.
"Right now, I just want to go to sleep, and forget this whole day." Nami said, tired of everything.
Vivi could only let out a non-verbal agreement, too tired to say anything else.
They both just laid down, an allowed sleep to take them, now sure that nothing else would happen. Not in real life at least.
In their dreams, they were blushing, reliving the earlier events in vivid detail. Both had secretly been enraptured by the whole thing and now their imaginations were running wild in their sleep. Even rubbing their bellies again while they slept.
The cause? If you could seen their bellies, you'd find a multitude of tiny bumps poking out against the soft, delicate surfaces.
Apparently a guest didn't want to leave.