By: Desolatepork2
Maki squatted down on a stiff and firm bed, it probably hadn't ever been washed, and was home to millions of different species of bacteria.
He rubbed his face and sighed into his green palms...
"Come on Kina! If you weren't always following me, you wouldn't have gotten caught! Plus i wouldn't have needed to try saving you!" Maki groaned, to which his cherry-pink mantis sister merely grinned.
"Hey we can't change the past! Anyways, that porridge that the guards fed us is really... doing bad stuff to my gut" Kina winced.
Maki scratched his head and looked around.
"Well there's a toilet right there if you really have to go..." Maki jutted his chin towards the stained metal toilet in the corner of their prison cell.
Kina's abdomen gave another ominous gurgle as she clutched her stomach.
"Ohhhh it's bad Maki... like really bad!" Her antennae fluttered nervously as she waddled toward the toilet, already undoing the straps of her combat skirt.
Maki turned slightly away, but the sheer force of Kina's sudden eruption made his head snap back around.
BBBRAAAAPPPPPPPPPPPPPRTTTT!
The first explosive burst hit the bowl with a wet, resonant rumblle followed by a groan from Kina as her whole body shuddered.
The stench hit him like a truck, it was a thick, bitter stench that clung to his nostrils
"Kina!" Maki coughed, waving a hand in front of his face.
The toilet bowl visibly darkened as Kina's waste piled up, her breathing ragged as she gripped the sides of the seat for support.
"Oooohhhh... there's more..." she moaned, her abdomen clenching violently before unleashing another torrent.
PRRRRRRRRRRROOOOOOOOTTTTTT!
This time, the stench carried a pungent, sulfuric edge... Like rotten eggs left in a sewer!
Maki gagged, his antennae twitching uncontrollably as the smell invaded his senses.
Kina, however, slumped forward with relief, her cheeks flushed from exertion.
"Whew... that's better," she sighed, wiping her brow before glancing back at the chunky, swirling mess she'd left behind.
Kina shrugged, standing up and stretching before examining the toilet thoughtfully.
"Alright, here's the plan... we're gonna climb in!"
Maki blinked. "...What?"
"The pipes," she said, as if it were the most obvious solution in the world.
"If we flush ourselves, we can ride the current straight to the sewers. No way those guards will follow us through that."
Maki hesitated, staring at the murky water swirling below. "You can't be serious"
"Dead serious," Kina grinned.
Maki shuddered at the thought, "Fine. But if we drown in your crap!" .
Kina rolled her eyes before lowering herself into the bowl, her legs disappearing into the murky water.
"Trust me. This'll work," she said, wiggling further in until only her head and shoulders remained above the rim.
With a mischievous grin, she reached for the flush lever.
The water surged violently, swirling around Kina as she was sucked downwards.
Maki hesitated only a second before plunging in after her...
The cold, shit stench closing over his head as the current yanked him into the pipe.
The ride was anything but smooth. The narrow passage jostled them mercilessly! Elbows and knees scraping against rusted metal as the foul slurry of Kina’s earlier shit sloshed around them.
Maki squeezed his eyes shut, trying not to think about what was clinging to his skin.
Then... they tumbled into the open sewer below, landing in a pool of shallow filthy water. Kina spat out a mouthful, gagging.
"Told ya," she wheezed, wiping her face. Maki groaned, shaking butt slime off his antennae as he glared at her.
They waded through the knee-high sludge, the stench of decades of waste thickening the air. Something squishy brushed against Maki’s leg, he shuddered, refusing to look down.
His stomach twisted violently, the same porridge that had wrecked Kina now bubbling ominously inside him.
"K-Kina..." Maki hunched over, clutching his abdomen as cramps rolled through him in waves.
His antennae twitched wildly... There was no mistaking what was coming.
"Ohhh no," Kina breathed...
Maki groaned, sweat beading on his forehead as another cramp seized him.
"There’s... nowhere to go," he gritted out, legs squeezing together.
"Of course there is!" Kina grinned, as she pointed at her mouth.
Maki’s entire face flushed darker than its usual green.
"You... you can’t be serious!" His stomach gurgled wetly, twisting into knots, and he doubled over with a pained whimper.
Kina rolled her eyes, she then knelt behind the protesting Maki and took a big whiff of his butt.
"Pee-yew! You smell worse than me, Maki!" Kina chuckled, rubbing her nose.
Maki trembled, his legs shaking as another violent cramp ripped through his gut. "I-I can't hold it..."
Kina didn’t hesitate. She grabbed his waist and yanked him backward, pressing his rear firmly against her face.
Maki gasped, "Kina, wait!" but it was too late.
BBBRRRRRRRRRRRUUUUUUUUUUUUURPPPPPPPT!
Maki's cold demeanour had completely fallen now, this situation was practically incomprehensible for him.
The noise erupted from Maki’s backside with seismic force, a rippling blast that echoed off the sewer walls like a truck horn.
Kina’s eyes widened as the hot gust blasted against her face, her antennae whipping back from the sheer pressure. The smell hit her a second later, it was sour and bitter at the same time!
"Geuuk!" Kina coughed, but she didn’t pull away. Instead, she inhaled sharply, her cheeks puffing out as she swallowed hard.
"T-that’s... so rank!" she wheezed, her voice muffled against Maki’s trembling thighs.
Maki whimpered, his face burning with humiliation.
Another cramp seized him, and his body jerked forward as an even wetter explosion ripped free from his asshole.
SPLBRRBBBBRRRRRRRT..... PLOORRPPPPPTTTTT!
A thick, sludgy mass that smacked against Kina’s tongue with sickening taste.
Her eyes rolled up into her bug skull as the taste registered, it was bitter and earthy, it was genuinely disgusting!
But instead of recoiling, she swallowed instinctively, her throat working greedily.
"Ohhhh..." Kina moaned, tongue darting out to lick the remnants from her lips.
Maki shuddered, barely able to process the sensation of his sister's hot breath against his exposed ass as another surge of pressure built inside him.
His intestines twisted violently!
PRRRRRRRRRRRRFFFFFFFFFFFTTTTTT!
Another thick, pasty torrent erupted straight into Kina’s waiting mouth, filling it instantly with a scalding, chunky load.
"H...Heuuukkrkghhh!" Kina groaned as she swallowed dutifully, it'd be so great... if she could be Maki's toilet full-time...
Maki's toes curled as another surge built inside him, his legs shaking violently as the last of the porridge's wrath tore through his intestines.
PPPRRRUUUUUUUUUUUUUUUUUUUUUUUUUUPPPPPPT!
It was thunderous, a wet, shuddering eruption that splattered against Kina's mouth in thick paste as she gulped frantically.
"K-kina!" Maki gasped, his entire body trembling as the last bits leaked out in small dribbles, his bowels finally relaxing.
"Urp! I might... Have to keep doing that instead of eating normal food" she teased, planting a kiss on Maki's left buttcheek...
Maki didn't know what to think, he was so stoic usually, but now his mind was foggy...
"...Okay" he muttered.
"Okay? You mean it!? You really mean it? I can be your toilet?" Kina looked up at Maki incredulously, her fingers tightening around his waist in anticipation.
Maki's face burned hotter than the sun.
"I-if that's what you want..."
Maki's voice cracked as Kina let out a gleeful squeal, hugging him tight, as they finally walked into the light of the outside world, from the sewer...