One Wrong Ingredient Chapter 1: Burning Love

Story by Seductive Serpent on SoFurry

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#1 of One Wrong Ingredient

Dead-set on getting some "satisfaction" from Mahiro, Nyaruko attempts to use a special potion to get him "in the mood". Unfortunately it ends up ingested by everyone, resulting in it backfiring on her in the worst way possible...


In the Yasaka household, Nyaruko carefully tip-toed down the stairs, carefully peeking into the kitchen where Mahiro; the love of her life, was preparing dinner. A dreamy sigh escaped her lips as she rubbed her legs together... before getting snapped out of her thoughts by the sound of his phone ringing.

"I'll get it!" She heard him call out before turning off the stove and leaving the kitchen.

As Mahiro ran upstairs to get his phone, Nyaruko glanced at her fellow extraterrestrials, making sure they were too occupied to pay attention to her...

Hasuta was giving Shantak-kun belly rubs while resting on the couch, and K?ko was wrapped up in one of the many new video games she'd acquired.

"Oh hey, Mom!" She heard Mahiro's voice from upstairs. "Huh? No, I can talk..."

_'Perfect~'_The silver-haired Nyarlotephian smirked, giggling sinisterly as she snuck into the kitchen, approaching the four bowls of rice next to a large pot of curry.

While she'd been doing her job protecting Mahiro, there were times where she felt like he never appreciated any of it. At least not to the point of accepting her advances...

But tonight, that all changed...

'Oh Mahiro-kun~, it's about time you got some "stress relief".'_She thought as she pulled out a small bottle of purple fluid and uncorked it. She then poured a few drops of the potion onto Mahiro's bowl of rice, the purple fluid quickly vanishing as it touched the food.'And this aphrodisiac will be just and you need to get into the mood!'_

"Nyaruko?"

The silver-haired Nyarlotephian let out a small "eep!" as she quickly shoved the bottle onto a shelf right above the stove just as the target of her affections entered the kitchen. "Oh! Uh-hey Mahiro-kun!"

"What are you doing in the kitchen?" Mahiro asked, narrowing his eyes at the Nyarlotephian.

"Oh, I just wanted an early taste, that's all!" She pouted, giving him an innocent smile as she pulled a spoon out of the drawer and quickly scooped up a small bit of curry. "Mahiro-kun's curry is just so delicious~!" She smiled as she took a bite.

Mahiro arched a brow at this, skeptically eyeing Nyaruko. "You can taste it all you want when it's ready, I still have to add in the vegetables." He started firmly as he guided her away from the pot. "And I better not catch you adding some weird 'secret ingredient' or something..."

"Oh fine!" Nyaruko replied, pretending to point as she exited the kitchen, with Mahiro watching her the entire time.

...but unknown to either of them however, the uncorked bottle Nyaruko had left behind tipped over, its contents pouring right into the curry...


Later that night, Nyaruko hummed a tune to herself as she casually stripped in front of a mirror, admiring her figure. _'Any second now that aphrodisiac will kick in. And Mahiro-kun won't be able to control himself!'_She smiled, rubbing her legs together. Just the thought of Mahiro throwing her onto the bed and taking her was enough to make her wet!

She was brought out of her thoughts when she heard footsteps approaching her door. 'Well, I was planning on approaching him first, but who am I to complain?' She giggled as she sauntered up to her door and flung it open. "Why good evening, Mahiro-ku-OW!"

It was quick, but right as the door opened, something struck Nyaruko in the shoulder with a needle, injecting a bizarre chemical into her body.

"Ugh... what the...?" The Nyarlotephian groaned as she staggered back and her vision quickly became blurry. "W-why, why do I-I feel... f-feel so..." Nyaruko gasped as she shook her head, trying to stay awake. But it was useless as the drug quickly overtook her senses, and the girl passed out...


"Ugh... whuh...? What hit me...?" Nyaruko grumbled as she reawakened, as her vision cleared she quickly realized that she wasn't in her room... or Mahiro's for that matter. She tried to get up, only to notice that her arms and ankles had been chained to the posts of the bed she'd been resting on... completely naked. "What the hell!?"

"Oh, good. You're awake now~" A seductive yet familiar voice cooed, Nyaruko's eyes widened as she saw K?ko climb onto the bed beside her, like Nyaruko she was completely naked, revealing the fame markings covering her slender body.

"K?ko!? What do you think you're doing!?" Nyaruko shouted as she struggled to free herself, but sadly no matter how hard she thrashed she couldn't break the chains. "Let... me... go!"

"Sorry, but these chains were made specifically for keeping Nyarlathotepan's captive, there's no way you can break them." K?ko explained as she fondled Nyaruko's breasts, making her captive shiver at her touch. "But don't worry Nyaruko-chan, I'll free you once I'm done with you~"

"For the hundredth time... mph... I-I'm not into... ugh, into you-" She tried to protest, yet found it increasingly difficult to do so as K?ko gently massaged her breasts, occasionally tweaking and pulling at her nipples. And if that wasn't enough, she soon felt a familiar heat began spreading from her loins. 'What the hell? Why am I getting turned on by this!?'

"Oh, I think we _both_know you want this as well~" K?ko giggled as she casually slipped her hand between Nyaruko's legs, her fingers tracing around the outer lips of her pussy before she gently twirled her finger around her clitoris, earning a few moans pleasure from the Nyarlotephian. Her captive could only yelp upon feeling K?ko's fingers prodding and pressing down on her clitoris, making her heart jump each time. "...after all, why else would you place that aphrodisiac in my food~?"

Nyaruko froze upon hearing that. 'WHAT!? But... but I only put the aphrodisiac onto Mahiro's food! How did-'

And then it hit her, she hadn't corked the bottle when she hid it... and it had been placed right above the curry.

'Oh, FUCK me!'_Nyaruko thought as she gazed into the Cthugan's eyes with pure fear. She now realized this wasn't her standard perverse deviance. No, she planned on truly and utterly _dominating her!

"I've wanted you for so long, Nyaruko. Even though you constantly pined for that Earthling, I never gave up on my feelings! Or my dreams~" K?ko giggled perversely, drool leaking from the side of her mouth as she withdrew her hand from Nyaruko's pussy, her fingers now glistening with some of Nyaruko's juices. "...my dreams to feel your lovely exotic skin against mine, to taste your exotic juices~" She cooed as she started licking the Nyarlotephian's juices off her fingers, letting out an orgasmic moan.

"N-N-Now K?ko, let's talk about this-mmph!?" Nyaruko tried to reason with her captor, only for K?ko to silence her with a ball-gag.

"Ah-ah-ah, there won't be any talking right now~" K?ko giggled as she kissed her on the cheek. The Cthugan then started trailing kisses down Nyaruko's breasts, giving both of her nipples an affectionate peck along the way, past her belly button, and eventually reached her legs. Nyaruko tightly closed her legs together, only for K?ko to force them apart once more, gently licking the inside of her thigh. "Instead, I'll let your _lower lips_do the talking~" She joked, gazing at Nyaruko hungrily before throwing her captive's legs up over her shoulders and burying her face right between Nyaruko's thighs, her eyes rolling back as she eagerly inhaled the scent of her sweet pussy juices.

"AHAN!" Nyaruko gasped, throwing her head back and thrashed about in her chains.

"Your pussy is just as perfect as I imagined it!" K?ko murmured as she leaned forward and pressed her lips up against her slit, running her tongue up along it.

_'No no no! It should be Mahiro eating me out!'_Nyaruko thought as she closed her eyes, groaning in frustration as the Cthugan wrapped her lips around her swollen clit, passionately kissing her pussy until she was writhing around.

"Mahiro would _never_treat you this well, would he?" K?ko mused, taking a small bit of joy in seeing her captive trying to endure the overwhelming sensations she was subjecting her to. "But don't worry, I'll make sure to give you more pleasure than you can possibly imagine!"

Nyaruko could only shudder as the Cthugan resumed eating her out, sending jolts of pleasure up her spine as she kissed her slit once more and flicked it with her tongue. 'Damn it! I shouldn't be enjoying this! If anything I should be doing this with Mahiro... but it feels so good!'

"Your juices are so sweet and tangy... I wanna drink it all~!" K?ko whispered between kisses, her tongue teased up and down her outer lips before plunging in and out of her slit., sending Nyaruko over the edge.

The silver-haired Nyarlotephian's eyes widened as she squealed through her ball-gag, her hips wiggling and gyrating against her face right as she came, spraying her juices right into K?ko's mouth. Her first climax rocked both her mind and body at once, causing her body to spasm as the Cthugan pulled her closer while forcing her tongue deeper inside Nyaruko's slit to the point where her nose was grinding against her clit, eagerly lapping up her juices.

_'Oh good... finally... it's over...'_Nyaruko thought, panting as she started to feel light-headed and rode out the wave of her orgasm, the Cthugan pulling her face out of her loins and licking the excess cum off her lips in satisfaction.

"It's not over yet Nyaruko..." K?ko smirked as she unhinged Nyaruko's legs and removed her ball-gag. "...I still want to play with you more~" She added, running her fingers through her silver hair as she started humping her leg, grinding her thigh into her crotch.

The silver-haired Nyarlotephian could have sworn she felt her heart stop upon hearing this... and then realized that her body felt still like it was on fire... and given how much of the aphrodisiac must have gotten into the curry, it was obvious her body wasn't going to be satisfied with just one orgasm... and neither would K?ko's.

"L-Listen K?ko, j-j-just take me to Mahiro's room, then we can have a three-mmph?!" Nyaruko tried to bargain, only to be cut off by the Cthugan as she forcibly kissed her.

"Oh hell no. You're all mine!" K?ko stated upon breaking the kiss. She then grabbed her left leg for leverage as she continued softly and tenderly grinding her pussy against the Nyarlotephian's thigh.

"Worth a shot-AHAN!" Nyaruko gasped as she felt her drenched pussy pressing against the Cthugan's, instinctively grinding her own hips against hers.

"Mmm, you're really getting into it now, aren't you~?" K?ko cooed as she gazed deep into Nyaruko's eyes, licking her lips as she straddled her thigh, watching her gasp for breath as their pussies rubbed together. The Nyarlotephian's expression shifted from angry to blissed-out the orgasm overtook her senses, her head tilting back and arching her back in response. "Such an incredibly beautiful sight~"

"Y-Y-You're a sick f-freak-ooohh-you know that!?" Nyaruko moaned, unable to resist rubbing her pussy up against K?ko's.

"And whose-ahn-fault is that-mmph?" K?ko retorted between thrusts, moaning as their clits started rubbing together, the Cthugan now grinding at a more sensual pace. "It was your aphrodisiac after all~"

'I don't know what I hate more, the fact that she's right...' The Nyarlotephian thought, trying (and failing) to ignore how good K?ko's slit rubbing up against her own felt. '...or the fact that I'm starting to enjoy this!'

"You can feel it, can't you Nyaruko?" K?ko gasped as she started getting rougher, grinding her slit into Nyaruko's, their pussies both squirting all over each other, drenching the sheets. "The way our bodies fit together, so perfectly entangled, almost as if we've melded into one!"

Nyaruko found herself unable to respond, crying out in pleasure as their bodies pressed and grinded together, both of them could feel respective climaxes slowly building up between them... and both unwilling to hold them back.

"I'm... I'm gonna... g-g-gonna... AHAAN!" Nyaruko gasped as she climaxed for the second time that night, her juices spraying all over K?ko's lower half as she writhed in pleasure.

"Yes! Just like that! Cum as hard as you can!" K?ko moaned out as her own orgasm quickly followed. "Give in to the pleasure! Just like m-OOOOHHH!" The Cthughan gasped as she came, their cum-soaked clits pressed one another as their pleasure juices mixed together.

"Pluh... please..." Nyaruko gasped, trying to catch her breath in the throes of her afterglow. "N-N-No more..."

Sadly, it was not meant to be.

As K?ko released her legs and separated her slit from the Nyarlotephian's, her eyes darted down to her exposed still quivering pussy, the very sight of it making her lick her lips. "Mmmhmhm~ look at you now... exposed, abused, and completely high in sexual bliss~" She cooed with a seductive smile, eager to let loose and ravage her. "And I'm nowhere near done with your pussy..."

Nyaruko swallowed hard, the knowledge that the Cthugan was nowhere close to being done with her filled her mind with dread... and her loins with anticipation...

"But don't worry, I'll pay _special attention_to your anus as well~" The perverted Cthugan smirked as she pulled an anal plug out of the dresser next to her bed. Nyaruko could only watch as K?ko rubbed it against her own glistening slit, coating it in her cum. Then, she held her captive still and pressed it gently against her anus.

"N-N-Now wait a sec-HRRRKK!" Nyaruko yelped as she arched her back, her hips shivering and wriggling about as she felt the plug being slowly pushed into her ass.

"Now you get to enjoy _both_holes being pleasured at once!" K?ko said with a perverted giggle as she pulled out a small black dial and twirled it around, causing the anal-plug to vibrate wildly.

"AGHEEKK! AH-AH-AHHH!" Nyaruko yelped and gasped as she felt the vibrations shooting through her rear, rocking her hips back and forth as her body unwittingly succumbed to the pleasure.

"Aw, what's the matter Nyaruko~? Is it too much for you~?" K?ko chuckled as she watched Nyaruko's hips shiver and twitch, drool escaping the sides of her lips as her screams and moans became clearer now as she couldn't hold herself back any longer. "And I haven't even dialed it up past 50% yet~" She giggled before twirling the dial around yet again, changing the intensity of the vibrating plug and causing her captive to moan even louder.

Satisfied with the results, K?ko got off her bed, leaving the Nyarlotephian to writhe in pleasure as she knelt down and pulled a chest out from under her bed. Opening it up, the Cthugan pulled out a crimson strap-on, it had a long, girthy dildo attached to the front and a smaller, more flexible one on the inside. "I've dreamed of feeling your body embracing mine for sooo long... and with this... I'll make that dream a reality~!"

The Cthughan quickly put on her strap-on, momentarily shivering in pleasure as she felt its inner dildo slide into her pussy. She then fastened it and crawled back onto the bed. "Now... for the real fun~" The Cthughan cooed as she descended upon Nyarlotephian.

Through her lust-filled haze, Nyaruko could only gaze at K?ko's strap-on with disbelief and horror. "Wh-What!? That thing's huge! It'll tear me apart!" She screamed as she tried to back away, however she didn't have much strength left as she was still exhausted from her earlier climaxes.

"Oh don't try backing out now Nyaruko~" K?ko smirked as she dropped down to her knees. Holding Nyaruko in place, she pressed the head of the dildo against her slit before sliding it inside her, partly due to her pussy already being coated with her cum.

"No no no n-RGHAA!" As she felt the dildo spread her pussy lips and enter her body, Nyaruko completely lost it right then and there, screaming as her whole body tensed up and she arched her back once more. 'Oh fuck this is too much!'

"Oohh, your pussy is so soft and warm~!" K?ko applied more pressure to the shaft, pumping it in and out of Nyaruko's pussy.

The Nyarlathotepan twitched and screamed as she felt the dildo being forcefully pumped into her body, it almost felt like she was being impaled on the damn thing! "Nghh! Please stop!" She begged, her legs twitching as she felt the sensations rush through her body.

"Hmm, I don't think so!" K?ko replied, simply shaking her head before thrusting once more, letting out a few gasps as her own body shivered in response. "I went through a lot to get my hands on this particular strap-on, and I'm not giving up the chance to finally use it on you!" She moaned out as she felt the dildo being squeezed by Nyaroko's vaginal walls. "This special strap-on lets me feel everything this dildo feels...as if I actually had my own dick!"

_'H-How did she even get her hands on that!?'_Were Nyaruko's only thoughts just as K?ko smirked as she pinned Nyaruko down and continued pumping her shaft in and out of her pussy.

"Haahh! With this maybe I'll finally get to make babies with Nyaruko-chan!" K?ko gasped between thrusts. "I... I think I'll name it 'Kyaruko'!"

"I'm n-n-not having yo-AHHHH!", Nyaruko tried to protest, but was frozen in shock when the dildo was forced in even deeper. overwhelmed with an uncontrollable urge, it was at that moment her mind finally snapped, her desire for pleasure overrunning her preferences.

The Nyarlathotepan couldn't hold her urges back any longer.

All she cared about now was pleasure.

"K-K-K?ko-chan..." She panted, her body burning up and her heart pounding in her chest. "...f-f-fuck me harder!"

Stars appeared in K?ko's eyes as she descended upon her, pulling her hips back and then thrusting her shaft down into Nyaruko's slit, the dildo sliding in with little resistance as both girls moaned in ecstasy. "Oh yes, YES! Harder, faster! I need more!" Nyaruko shouted as she wrapped her arms around K?ko, shivering as she felt the Cthugan's shaft pumping in and out her, her moans getting louder with each thrust as her eyes rolled in the back of her head and her body trembled in pleasure.

Nyaruko's legs tensed as K?ko steadily increased her thrusts in speed, using her vaginal muscles to grasp and squeeze the shaft. As her body pressed down onto Nyaruko's with each thrust, K?ko moaned in blissful ecstasy as the surges of pleasure shot down from the dildo into the nervous systems it was somehow connected to.

"Oooohhh! Keep going~! I'm so close!" Nyaruko moaned, clenching the bed sheets underneath her. Words could not describe just how wonderful the sensations she was feeling were, she felt like she could pass out at any moment, but the pleasure seemed to keep her between both phases of consciousness.

Soon, both the Nyarlathotepan and Cthugan lost track of time. Whether it went on for days, hours, or even a few minutes, they didn't know. Every moment of sensation felt stretched out further than what seemed possible, and yet the duo didn't care as, only wishing to soon feel that sweet release.

Then finally, both of them felt another orgasm building up within, K?ko's pupils dilated as her eyes rolled in the back of her head. "Oh yes... YES! OH NYARUKO!" K?ko hollered, wrapping her arms around Nyaruko's body as the sensation suddenly shot up the shaft and fired out of the tip of the dildo, Nyaruko gasped as she was filled up with K?ko's pussy juices, with some of it splashing out the sides of K?ko's pussy lips and drenched Nyaruko's hips.

Nyaruko's own eyes soon rolled in the back of her head and she arched her back once more as she thrust her hips upwards. "Aaahhh! AHHHH! I'm g-gonna... I-AHHH!" Nyaruko cried out as she came hard, her legs stiffening and her toes curing as she rode the pleasure wave, her pussy juices squirting all over the covers, her hips violently spasming with each sudden thrust before slowly going limp.

As Nyaruko collapsed on the bed, exhausted, K?ko pressed herself up against her panting, sweat-covered body. "Mmhmm... you really liked that, didn't you?" The Cthugan smirked, holding Nyaruko close as the two rested to recollect their strength.

After some time passed, Nyaruko finally found her voice. "What just happened... never... leaves this house... got it?"

"Oh, that's fine by me..." The Cthughan smirked as she leaned over and kissed Nyaruko on the lips... right before her expression became more sadistic. "...as long as I'll have you to myself all night long~!"

Nyaruko's eyes shot open upon hearing this. 'I've made a HUGE mistake...'


While Nyaruko was reaping what she had sown, a few rooms down the hall, Mahiro was dealing with his own personal problems...

"Damn it! Why won't it go down!?" He groaned as he continuously jerked himself off.

He wasn't sure how or why, but sometime after dinner, he'd found himself aroused beyond belief. At first he thought he could simply "relieve his stress" before he went to sleep... but no matter how hard he tried, his dick was still hard.

"Mahiro-kun..." A meek voice called out.

The young man froze as he slowly looked over his shoulder towards the source of the voice.

"...Hasuta?"