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Never Seen a Hentai Like This

Summary:

Jisung, having found a strange book and having a friend like Felix to encourage poor decisions, decides one day to try and fulfill his biggest fantasy...

By summoning a monster.

Chan, however, turns out to be quite sweet, and Jisung is thrilled to be able to show the lovable creature the wonders of the mortal realm - including the wonders of intercourse.

Notes:

(See the end of the work for notes.)

Work Text:

“Why are you all the way over there?” Jisung asked with a chuckle. Chan fidgeted, looking like he was trying to make himself smaller.

“I just... what if I hurt you?” He asked, the strange echo behind his words quickly becoming something that Jisung absolutely adored.

“You’re so cute~” Jisung cooed, making the creature flush red.

See, Jisung, having found a strange book at a second hand shop, didn’t think twice about the strange symbols and rituals written inside. He bought it, thinking it was aesthetic and spooky. He had it on his shelf for months before his friend Felix found it and asked what it was. Together they looked through the book, flipping through the yellowing pages with wide, excited eyes.

Nothing could have stopped Jisung from trying to summon the monster in the book - not even the threat of being ripped to shreds or damned to Hell for all eternity. For the first time in his life - the first time ever in the history of man, probably - he had what might be the only genuine chance to get fucked by a monster like he always dreamed.

When he did the ritual, nothing happened at first. He was almost surprised at the soul crushing disappointment he felt - part of him knew there was no chance this book was legit but-

It wasn’t until an awkward cough came from behind him that Jisung realized the ritual had, in fact, worked perfectly.

Chan was shy and awkward at first, but quickly warmed up to the human world. Jisung had taken him on a dozen dates, showing the creature all the wonders of the mortal realm - so far, Channie’s favorite things were ice cream, stuffed plushies with extra soft fur, flowers, kissing, and all animals.

Now, it was Jisung’s turn to show Channie yet another wonder of humanity.

“I’ll guide you,” Jisung called from the bed. “Trust me?”

“Okay...” Chan mumbled and went over, climbing onto the bed almost hesitantly. The mattresses dipped down far more than someone of Chan’s size should have done, but

Jisung was used to the creature being far heavier than a human would be. He crawled onto Chan’s lap, instantly licking his way into the monster’s mouth. Chan returned the kiss eagerly, his tongue slightly chilled and tasting faintly of freshly cut grass. It had thrown Jisung off at first, but he quickly learned to be addicted to it.
Everything about Chan was addicting.

“Can you... do the thing?” Jisung asked, his excitement bleeding into every word. Chan pulled back and stuttered, his face flushing an even deeper shade of red. Apparently, Chan had never experienced blushing before he was summoned and took a human form for the first time, and he had panicked at first. He thought he was dying - that his human form had been formed incorrectly and was failing him. Jisung couldn’t help the instant rush of affection he felt as he explained what blushing was.

“Are you sure? I don’t want to scare you...” Chan looked away, tapping his fingers together shyly. Jisung knew showing Chan anime would be more for the human’s benefit than anything because fuck was Chan adorable.

“Puppy,” Jisung hummed, watching Chan’s pupils dilate, the rectangular shapes once having startled him but he quickly learned to adore as well. He was like the most precious goat in existence. Chan melted at the pet name, having a particular soft spot for the creature Jisung had introduced as ‘dog’. “I want it so badly. I think I’ll actually die if I don’t get to feel you.”

“Die?!” Chan’s eyes widened in horror as he pulled away, only to lean into Jisung’s hands as the human cupped his cheeks.

“It’s a figure of speech,” he promised, kissing the tip of Chan’s nose. Chan scowled a little, not at all fond of figures of speech. He also was not fond of loud noises, large crowds, or anything that shows an animal being hurt in any way. “I just really, really, really want it.”

“If you’re sure...” Chan trailed off, a shudder going through his body. Jisung’s blood started to boil as he watched the tentacles sprout from Chan’s back, almost like wings as they hung in the air behind him.

“C-can you change the sizes of them?” Jisung’s mouth was watering as he openly gawked at the appendages.

“Mm,” Chan nodded like the good boy he was. He brought one closer, letting Jisung hold it gently in his hands. It was heavy and chilled, like Chan’s tongue. Jisung gave it a gentle squeeze and was intrigued by how it squished under his fingers. Chan let out a quiet moan when he did so, which prompted him to do it again. Chan watched Jisung play with his tentacle, smiling a little at the pleased gasp that left Jisung’s mouth when the tentacle shrunk to the size of a piece of yarn before growing back again. “Is... is this okay?”

“Puppy, if there’s ever a time you don’t feel comfortable, you need to tell me red, alright baby? We’ll stop everything and make sure you’re okay,” Jisung asked, waiting for Chan’s nod. “I’ll do the same thing, remember? If I’m ever in pain, or uncomfortable, I’ll call red... until I do though? I’ll like everything that’s happening.”

“Tell me what to do?” Chan asked, his echoing voice whining and weak.

“Oh fuck me,” Jisung’s eyes rolled back. He was about to fulfill one of - no, the biggest fantasy he has ever had. The fantasy that’s made him cum faster than any porn could ever even hope to do. “Kiss me?”

Chan surged forward as Jisung ripped off his clothes. It was a little tricky, undressing when you had a long, chilly tongue shoving it’s way down your throat, but Jisung was just as eager as Chan seemed to be.

“You’re leaking?” Chan blinked in surprise when he felt something wet on his lower stomach. Jisung groaned, his head resting on Chan’s shoulder.

“It- it means I’m already feeling good,” He said, his mind already starting to go blank as the prospect of what was about to happen started to sink in. “Reach one of your tentacles around behind me... you’re gonna h-have to start it small to stretch me out.”

Jisung’s voice cracked when he felt something cold and slick rubbing against his entrance. Chan seemed enchanted by the way Jisung’s whole body seemed to react to such a small touch.

“Fffffuck,” Jisung groaned, his ass tensing. “Sl-slowy start to p-push it in...”

Chan did as he was told, kissing Jisung’s hot cheeks and into his trembling mouth as he slowly worked the thin tendril inside the human’s body. Jisung could feel the knot in his belly instantly start to grow and he whined loudly. He couldn’t cum yet.

“Can- can you take another thin one and wr-wrap it around the base of my cock?”

“Why?” Chan asked but did as he was asked. Jisung let out a loud whimper as the approaching orgasm was instantly stopped.

“Don’t wanna cum yet,” Jisung panted against Chan’s shoulder. “You- you can make the first one thicker... wanna feel full.”

Chan hummed and kissed the human again, his tongue entering Jisung’s mouth the same time as the tendril in his ass started to grow. Jisung let out little ah-ah-ahs as he ground down on the tentacle. He tapped Chan on the arm when the stretch started to hurt and the creature took the hint.

“Wanna make you feel good...” Chan nuzzled Jisung’s cheek and despite the fact that he was so horny that he might actually explode, Jisung felt a rush of affection go through him.

“Ah- ah- you-you’ll feel me g-getting lo-looser,” Jisung stuttered. “You can keep st-stretching me when it’s not-not as tight.”

“How far do you want me to go?”

“I want... I want at least two in my ass,” Jisung already felt like he was being split in half by the size of the appendage inside of him, but he was absolutely a size queen and knew he could take twice as much with enough prep. “And- and on my chest...”

“Like... this?” Chan asked as two more tentacles snaked around Jisung’s chest, curling around his pecs like a soft, living bra. Jisung arched into the touch as the tips of the tentacles started to play with his nipples.

“FUCK-” Jisung shouted, glad he told Chan to block his orgasms because he shuddered through a dry one as Chan gently fucked the tentacle into his ass. “Oh god puppy- f-f-feels sooo g-g-good-

Chan preened and Jisung could feel the tentacles pulse at the praise. The tentacle in his ass grew just a little more and he couldn’t help but clench down onto it. If he had to guess, it felt like it was about as thick around as a soda can and easily a foot into his body. It started to warm from being inside his body, and he faintly wondered how it felt on Chan’s end to suddenly be surrounded by something so hot and tight.

His back arched when he felt a gush of something wet inside his gut and Chan let out a shuttering groan.

“Wh-what was...?” Jisung’s body felt like it was a live wire, drool starting to drip from his chin as he weakly rolled his hips.

“D-dunno,” Chan whimpered, closing his eyes and hiding his face in Jisung’s neck. “I wanted to make you f-feel good and all of a sudden-”

“Oh shit-” Jisung felt his body shake as his orgasm stopped. An aphrodisiac slime being shot directly into his body? This was better than any hentai he could ever even imagine - and he could imagine quite a fucking bit.

“Is it bad?” Chan’s voice took on an edge of panic before Jisung kissed the creature into silence.

“Puppy... his words were starting to slur, a goofy grin on his face. “It’s- it’s fuckin’ perfect... you’re- fuck- you’re makin’ me feel so good...”

“Sung...” Chan wrapped his arms around Jisung’s waist tightly, his own erection rutting against the human’s pitifully.

“Wanna try something else?” Jisung asked, as if either of them would say no. Chan nodded, his hair flopping over his desperate eyes. Jisung’s body clenched, hoping what he was about to ask for would feel as good as he thought it would. “Take- take a tiny one and...”

He waited for Chan to hold a thin tendril in front of his face, no thicker than a string of yarn. He took it and grinned at how it felt almost icy in his overheated hands. He guided the tendril down, resting the tip against the head of his cock.

“J-just slo-slowly push it in-” He whispered, his voice already wrecked from moaning and whimpering. Chan did as he was told without hesitation, pressing the thin tendril into Jisung’s leaking, hard cock. Jisung’s body trembled violently as he felt every single millimeter of the tentacle entering his urethra, his eyes rolling back when he felt it hit his prostate from the other end.

“Shit-” Chan hissed, and Jisung loved how curses sounded coming from his kiss-swollen lips. Something about Chan cursing really got him going.

“Talk to me puppy,” Jisung all but begged. “How- how do I feel around you, huh?”

“So hot,” Chan ground out as he clung to the boy. “So f-fucking hot... like- like I’m gonna burn up-”

“Does it hurt?” As cloudy as Jisung’s brain was, he couldn’t stop but worry. Chan shook his head desperately, holding onto him tighter as if he were afraid of Jisung leaving him.

“NO- fe-feels good,” Chan sobbed, his tears cold against Jisung’s neck. “W-wanna feel hot all over... make me feel hot? Please?”

Jisung couldn’t stop himself. He gripped Chan’s hair and pulled his head back before diving down and latching onto Chan’s neck with his teeth. Chan writhed under him, making the tentacles fuck up into him harder. More slick sloshed into his body, making his fingers go numb from how good everything felt.

“Puppy...” He could barely form the name through the swollen feeling of his tongue and the way his body felt like it was filled with molten lava. “N-nother... plea...se... more...”

Chan nodded and Jisung felt another tentacle prodding at his stuffed entrance. He sobbed brokenly as the second tendril started to slowly push its way past his raw rim, stretching him farther than he thought his body could manage. As it slid in, some of the slick dripped out of his ass and down his thighs, soaking his skin and the blanket below him. Where the slick touched, he could feel the tingling. Touching his stomach, Jisung could feel how the skin bulged out, and if he pressed down just a little he could feel the tentacle wriggling inside of him.

The thought of that alone would have been enough to make him cum.

He wondered if Chan could feel the effects of the slick. He wondered if Chan would feel good getting fucked by his own tentacles. He wondered if he was in danger, his body being stretched in an impossible way that he couldn’t feel through the soul shattering pleasure he was experiencing. He wondered if he would remember any of these wonders when his brain was back online.

Without him having to ask, Jisung felt a tentacle pressing against his lip, as if asking for permission. He opened his mouth eagerly, tasting the slick that dripped from it. It was chilled and tasted similar to the way Chan’s tongue did - faintly grass-like. Natural. He swallowed around the appendage, his throat relaxing as the tentacle grew in his mouth.

Chan began to gently fuck his mouth at the same time he started thrusting the tentacles in the boy’s ass. If he had been in a clearer state of mind, Jisung might have made a joke about feeling like a human accordion, but all that mattered was that his extremely strong gag reflex seemingly disappeared as the slick dripped down his throat.

Something else prodded at his mouth but he couldn’t open up any more. Chan shrunk the tentacle in his mouth in order to fit his tongue in, licking the slick off of the back of Jisung’s tongue.

Jisung felt like he was about to ascend. His entire body was numb but simultaneously could feel every single touch. He could feel how the tentacles inside him pressed against his walls as they twisted together and writhed deeper into his gut. Slick bubbled out between the appendages, creating the most vile squelching sounds imaginable. He could feel the tendrils wrapping around his nipples, tugging and pulling and pinching at random. The chill of the tentacles around his pecs made the hair on his arms stand on end. He could feel the tendril inside his cock caressing his urethra gently, almost lovingly. He could feel the tentacles pressing on his prostate from all sides. He could feel how Chan trembled under him, the creature’s own cock leaking more slick against both of their abs.

He whined around the appendages in his mouth, wishing he could beg Chan to let him finally cum. He would have to talk to Chan about gagging him without discussing a non-verbal safeword beforehand, but at the moment he didn’t really care all that much.

He wished this would never end. If he could spend the rest of his life feeling Chan’s tentacles writhing and growing and slipping slick into him, he would be happy. He wanted Chan to fuck him until he blacked out, and then he wanted Chan to keep fucking him when he was passed out. He wanted Chan to fuck him awake, then fuck him until he collapsed.

Felix had been wrong. Nothing could compare to this. It was worth selling his soul to a creature summoned from a random book. He hadn’t thought twice when Chan asked to make a contract, but now he was glad he did - not only did that mean keeping Chan in his life in general, but it also meant he could get absolutely destroyed like this whenever he wanted.

“Ah- ah- S-Sung,” Chan’s echoing voice sounded almost painful. He pulled his tentacle from Jisung’s mouth as he leaned back, their mixed spit and slick dripping down both of their chins onto their chests. “I-I feel- I feel like I’m- I’m going to pop-”

“Cum in me-” Jisung blabbered, his eyes completely crossed in pleasure. “Fill me up! P-please! Please Channie! Please puppy- Breed me! Knot me! Make me yours-”

Chan’s eyes widened, his pupils shrinking down to slits as he instantly tensed. Jisung felt the world pause for just a split second before he felt something freezing flood his gut. Chan’s icy cum continued to pump into him, making his stomach stretch and extend to where he could almost feel the discomfort through the unnatural pleasured numbness.

More icy liquid gushed down his chest, his sensitive nipples able to feel each and every pulse of the cum. The best, though, was the feeling of the cold filling his cock, making it twitch violently.

Chan began pulling his tentacles away, starting with the ones in and around Jisung’s erection. The moment the pressure was relieved, Jisung’s body went taunt as a bow as he came so hard he could feel rather than hear himself screaming as if he were being murdered. His own cum pulsed out of his painfully hard dick, more of the scalding white painting Chan’s chest than he had ever cum before. He wondered if someone could die from cumming too much - honestly, not the worst way to go.

The tentacles in his ass slowly pulled out, Chan being careful not to hurt Jisung by the sudden emptiness.

“NO!” Jisung shrieked, clawing at Chan’s chest. Chan seemed to get the hint and quickly plugged Jisung up again, stopping the combination of slick and cum from slipping out of his gaping hole.

Jisung shuttered, resting his entire body’s weight against Chan’s chest. All he could hear was static and he couldn’t form a single coherent thought.

“Sung...?” Chan asked, carefully pulling Jisung into his arms. The boy didn’t respond. He couldn’t even move. Chan gave him a gentle shake, trying to get a reaction. “Jisung?”

Jisung could hear Chan through the static, but all he could focus on were the tremors that continued to wrack his body, his limp cock still dripping cum weakly onto his lap. Chan gave him another light shake.

“Jisung? Are- are you okay?” Chan’s voice started to shake. “Are- did I hurt you? Are you hurt?”

Jisung wanted to say something, but it was like his body wouldn’t listen to him. It was like he was just watching through a set of eyes but couldn’t control the game.

“Oh-oh no...” Something cold dripped onto Jisung’s face. “No... I’m-I’m so-sorry... I h-hurt you... oh fuck- I hurt you-”

“...” Jisung stirred, but it seemed to take all his energy to just twitch.

“Jisung, please say something,” Chan begged, his tears making his words thick and scared. “Please? Just- please be okay... red! Jisung, red! You- you said if I said red it would be okay!”

Jisung forced himself to crack his eyes open. He was so tired and numb he thought his legs had been stolen from him, but he forced himself to blink. He had told Chan that if he safeworded, it would be okay - that they would stop, and make things right again.

“Pu...ppy...”

“Sung!” Chan scooped him close, the tentacle still in his ass making him whine and twitch. “Oh my god! Are you okay?”

“Mm, so... so good...” Jisung’s lips were numb. “Th... ank you... baby...”

“What can I do?” Chan’s hands fluttered around Jisung’s face and chest, as if he was afraid to touch the human. “How can- how can I make you feel better?”

“Hold... me?” Jisung asked, letting his eyes slip shut again. He was so tired.

“Of course,” Chan held him close. Jisung faintly felt something - several somethings - wiping the sweat and cum and slick from his skin until he was completely clean. He didn’t know how Chan managed to make him feel genuinely clean without actually showering, but he was just so grateful that he didn’t have to move. “When... when you wake up, can we cuddle?”

“Mm... eat, and cuddle,” Jisung’s words were slurring again, this time in exhaustion. “My good puppy... took such good... care of me...”

“You made me feel good too, Sungie.” Chan nuzzled Jisung’s cheek, and the touch was enough to make Jisung feel something through the numbness.

Jisung lifted one hand to rest on his stomach, rubbing the roundness he found there. He could feel the cum inside of him warming to match his body temperature, Chan’s tentacle knotting him closed perfectly.

“You’ll be so pretty with our pups,” Chan purred, pressing chilly kisses to Jisung’s face and bare shoulders. A full-body shudder went through the human. “I bred you so well... so full and deep...”

“Channie...”

“Yes?”

“Love you...”

“What’s love?” Chan asked softly. Jisung chuckled and felt himself drifting off to sleep in the creature’s arms. He had never felt so full or satisfied before. He would never be able to cum on anything but Chan’s tentacles for the rest of his life.

“I’ll... show you later.” He hummed. The last things he felt before falling asleep completely was the tentacle in his ass pulsing in anticipation, and a soft press of lips to the corner of his mouth.

Jisung wished he could go back to the moment he found that book and kiss himself on the lips. The book - Chan - was the best thing to ever come into his life.

Notes:

I got a ~little bit~ of attention from a dorm cumslut felix thread on my NSFW account (bidisasterwwx) and now I've let it go to my head 🥵🥵 I was just going to leave this as screenshots in a thread there but it's too much to screenshot and post so I'm just doing the link and the rest of AO3 has to suffer the whorney along with me

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