Chapter Text
Gundham had a strong fascination with the dark arts, and being a powerful demon overlord himself, he had made all sorts of attempts to make contact with deities from the underworld to commune with fellow otherworldly beings. Unfortunately, he had never been successful in bringing them into his current realm.
Yet, his continued efforts seemed to have at least marked him in some way, making him stick out as a target for their mischief.
It was at approximately 3:00 am, the time of night when supernatural beings are thought to be most powerful, when Gundham awoke due to sensing another presence in his bed, a weight resting on top of him. His mind slowly faded into consciousness, before his body went rigid once he realized it was a person hovering over him and not simply one of many beasts he was housing.
It was dark in his room, but not so dark that Gundham couldn't see what was right in front of him. The stranger had straddled his hips, after they must have removed his sheets (that explained why he had also been feeling so cold), sitting on him while staring down at him with a mischievous grin.
"Heeey handsome~♡" they softly cooed at him. "Sorry to wake ya."
Gundham stared back at them wide-eyed, too shocked to speak or even scream. He began to frantically scan their features, trying to make sense of who in this realm they could possibly be.
The first few things to stand out to Gundham were their wild pink hair and pointy, fang-like teeth. He was also quickly struck with how entrancingly beautiful they seemed to be... almost as if they could only be a figment of his imagination.
The features of their face were rather catlike, or even elfish in appearance, and they had pretty pink and plump lips that Gundham found were rather captivating. Their skin looked so smooth and succulent, while the tiny bit of moonlight peeking through his bedroom window gave them a soft, ethereal glow.
His gaze then traveled downward, and he was in awe of how alluring their body was as well. They were lean and fit, and had curvy hips that were accentuated by a slimmer waist. In terms of attire, they wore nothing but the tiniest, most risqué black string bikini Gundham had ever seen, leading him to recognize they were certainly male, biologically speaking, given the flatness of their chest, and the noticeable bulge in the front of the bikini bottoms.
Their legs were encased in sheer black stockings that reached his thighs, and on his arms he wore a matching pair of long fingerless gloves. They also were sort of choker or collar around their neck, with a large, pink jewel attached to it.
One of the more intriguing things he noticed was the intricate heart-shaped crest located in the center of his lower stomach. Soon after this, he also managed to catch a glimpse of something swishing behind them, that he quickly realized was a tail, a long, thin, black one with an arrow-shaped tip. His eyes traveled up their form again, and he noticed the pair of small bat-like wings sticking out from their back and the two little black horns situated on top of their head that he had not noticed before due to the darkness of the room, but stuck out to him now that he was looking for them.
Taking in all of these observations, Gundham suddenly believed he knew what he was looking at and gasped. "A... An incubus...!?"
He watched the creature's eyes then light, up and its grin widen. "Aha, bingo!" he exclaimed, his body giving a slight jolt of excitement. "No one's ever guessed that fast... How'd ya know?"
Gundham stared shocked at them for a few more seconds, before eventually snapping out of hit.
He shook his head before finally responding. "I... I happen to know quite a bit about dark creatures such as yourself, and your appearance gave you away..." he explained, looking his body over once again.
"Haha! In other words, I'm just so hot, I gotta be a sex demon, right?" the incubus asked conceitedly, while running a hand down his chest toward his abdomen, following the curves of his waist. His pink eyes narrowed and he licked his juicy lips. "Well then, you already know what you're in for, don't you~? ♡"
He then leaned down, placing his hands on either side of Gundham's head as he brought his face closer to the other's face, closed his eyes, and kissed him.
"Mmmph...!" Gundham was too shocked to protest, and before he knew it, he was feeling him shove his tongue past his lips, starting to worm it into his mouth. His lips were pillowy soft against his, and he tasted unbelievably sweet, like something someone could get addicted to easily.
Suddenly, he could feel himself growing extremely aroused, his heart rate increasing while his skin began to tingle. His cock stirred within his pajama pants, rising to full mast. It was like he had been dosed with some highly potent aphrodisiac.
The sensation of the creature's rough tongue sliding against his pleased him greatly, making him let out a muffled moan against him. Gundham felt a smile curl on his lips, before the incubus began to pull back, a string of saliva still connecting them.
"Hehe~♡ You're getting pretty turned on, aren't ya, big guy?" he asked. "That would be my spit doin' it's work! It has the ability to inflame my victim's libido..."
"Hah... yes... y-you must be very powerful..." Gundham mumbled, feeling as if his entire body had been set aflame. The creature above him had looked attractive before, but now he seemed downright irresistible. It was fascinating magic.
"Mmhmm~♡" the creature hummed while smirking down at him, before leaning in to kiss Gundham's neck. He began to suck on the sensitive skin and even nibbled him a bit with his sharp teeth, forcing a shocked gasp out of him.
"Ah, w-wait... first, you must tell me... what is your name?" Gundham questioned as he attempted to nudge him away. He wanted to obtain some information about the being while he had the chance.
"Hmm...? You want to know my name?" The incubus stopped his ministrations and looked at him curiously. "Hehe... well, I tend to go by Kazuichi when dealing with humans, so let's just go with that..."
"Well, K-Kazuichi... why have you visited me? What exactly do you plan to do to me?" Gundham then asked, curious to know just what he had in store for him.
"Aw, don't worry, I'm not gonna do anything scary to you, I promise~" Kazuichi assured him. "I just need to collect a few loads from ya and I'll be on my way!"
"You need to fill y-your body with my essence, in o-order to regain vitality, correct?" Gundham questioned, rephrasing his words in a way that made more sense to him.
"Well, yeah... that's pretty much right..." Kazuichi mumbled, a playful smile still on his face. "Hmm~ Y'know, you talk pretty funny for a human..."
"But, I'm not a human... I am an immortal demon like yourself..." Gundham claimed.
The incubus stared at him for a second, the corners of his lips twitching, before he burst into a fit of laughter.
This made Gundham blush, feeling rather embarrassed. "I-it is true!" he asserted, as he tried to sit up a bit, but the other's weight kept him down. "I am Gundham Tanaka, the future ruler of this r-realm...!"
Kazuichi giggled at him again. "Yeah, yeah... sure ya are, buddy..." he said condescendingly, smirking down at him. "...Now, I think that's enough chatting for now... it's time we got down to business. I can feel ya already rearin' to go~"
He then started to grind his ass against Gundham's hard cock, making him groan, and stropping him from arguing any further.
"Aaah~♡ you feel pretty big..." Kazuichi remarked, while continuing to rub himself against him, feeling his erection through his pants. "I can't wait to feel you stuffing me full~♡"
Eventually, the incubus slowed the movements of his hips, before getting onto his hands and knees, and crawled down Gundham's body until he was eye level with his crotch. He pushed his t-shirt up a bit, his hands trailing up his sensitive sides and making him shiver.
The creature then trailed kisses down his stomach, as he hooked his fingers under the waistband of his pajama pants. Gundham couldn't find the willpower to try to stop him as he began to tug them down his hips. He gasped as he felt his cock spring free, the cool air of the room suddenly hitting him.
Kazuichi let out a noise of delight as he stared at his long, thick, fully erect member. He wrapped his wonderfully soft hand around his cock, and started to slowly stroke him. Gundham watched intently as he pleasured him. He rubbed him and twisted his wrist as he pumped, sending waves of pleasure through him and he couldn't stop himself from needily bucking up into his fist.
The creature then leaned forward, steadying himself with his other hand by placing it on Gundham's thigh, and placed a kiss on the tip of his cock. He let his tongue slip out, giving him a slow lick. "Mmm... so good... you taste so good...♡" he cooed, admiring the salty flavor, and continued to give his member gentle kisses and kitten licks to his cock and balls.
Gundham whined, feeling his cock ache. This wasn't fair... it was Kazuichi's fault that he was in such a vulnerable state, and yet here he was teasing him with these light touches. He was aching to be inside of his mouth. "Ahh... please... get on with it, you f-fiend..."
Kazuichi met his gaze and gave him a sly look and he gave one last slow lick over the tip, lapping up the bit of precum that oozed out of him, before wrapping his plump lips around his member. Gundham moaned, his mouth feeling deliciously moist and warm around him.
Keeping his eyes locked with Gundham, Kazuichi began moving his head up and down the shaft, his long, skilled tongue running over the entire length. While bobbing his head he took in a little more each time until Gundham could feel it nudging the back of his tight throat, and yet he did not hear him gag even the slightest bit.
Kazuichi simply relaxed his throat's muscles, and let his cock slowly slide deeper and deeper until his nose brushed into the black pubic hair that adorned his pelvic area.
Gundham let out a surprised groan and bit his lip at the overwhelming sensation. He watched as the creature sucked with hollowed cheeks from the base to the tip, and then back down again, suctioning his lips around his cock vacuum tight. The way he licked and slurped him with such skill it made him feel as if his soul was being sucked straight out of his body.
He moaned as he felt the heat pool within his groin, and grabbed onto chunks of vibrant pink hair to hold his head in place before he began to jerk his hips off the bed and plunge his cock deeper into the other's hot mouth.
The incubus's eyes rolled back with bliss as the tip of his cock repeatedly hit the back of his throat, keeping still and taking it all perfectly. He did this while he kept his back arched, making his perfectly formed backside look so round and prominent even from Gundham's perspective.
The erotic imagery brought him closer to the edge, his cock now violently throbbing against Kazuxhi's tongue. "Kch... I'm g-going to...!" he exclaimed, his legs starting to shake. His pleasure built up to its climax and he felt himself burst, orgasming with an intensity he had never experienced before.
His ejaculate shot down the other's throat at a high velocity, feeling him work to swallow glob after sticky glob. Kazuichi gulped down his semen, as if not a single drop could be wasted, moaning whorishly as he did.
He then cleaned his cock of any sticky remnants, before slowly sliding off, releasing him from his mouth with a wet pop. "Yum~♡ you're cum is so thick and creamy~♡" he purred, while licking his lips as if he had eaten something delicious.
Gundham was left filled with sparkling satisfaction, his brain now feeling a bit hazy. He watched as Kazuichi crawled back toward him, and pressed his body against his. Suddenly his lips were on his again, his tongue invading his mouth, tasting himself on him.
Kazuichi slipped his hand between them, and took hold of Gundham's cock. He slowly stroked him, trying to perk the human back up.
Gundham cringed at the overstimulation, his cock still sensitive from his intense orgasm. He was astonished, however, when it seemed with just a few movements he was growing erect again. This creature truly had him at his mercy.
"Mmm, are you impressed? I can get you up in seconds~" Kazuichi hummed, as he pulled away from the kiss.
He then sat up, and hooked his finger into his skimpy bikini bottoms. "Let's finally get these all the way off..." he mumbled, as he slowly slid them down and moved his body so that he could get them off his legs, before flinging them somewhere out of sight. He straddled the other's hips and taking his dick back in his hand, he began rubbing his plump posterior against him, making Gundham grunt. "Hang tight, handsome~ It's time to feed my other hole too!♡"
He aligned the tip with his entrance, and Gundham could already feel the heat radiating from inside of him. Slowly, he began to lower himself, the head pushing past the tight ring of muscle, and the rest sliding in astonishingly easily. It seemed lube or other preparations weren't necessary for a sex demon.
Being inside of him felt mind-numbingly good; not too loose, not too tight. His insides were wrapped around him just perfectly, surrounding him in a soft blanket of exquisite warmth.
Kazuichi leaned over him, and placed his hands on either side of Gundham's head to brace himself, before starting to raise his hips until only the first few inches of his cock remained inside of him, and then sank back down.
Gundham moaned feeling him suck him in again, his tight hole squeezing around him. Kazuichi began to ride him, bouncing up and down, and grinding on his penis by rolling his hips, while slowly and steadily increasing the speed of his movements.
His body looked mesmerizing as he moved on top of him, and Gundham felt the overwhelming urge to touch more of him.
He gripped his plush, stockinged thighs, squeezing his fingers into the succulent flesh. Soon he was letting his hands roam all along his hips and waist, before he grabbed his buttocks, feeling how thick and squishy his lower body was, and the way the fat bounced and jiggled in his hands while he sprang up and down.
It all felt very vivid... Gundham couldn't believe this was truly happening; that he was actually having intercourse with a demon, that he could touch and feel, and not just having a very dirty wet dream.
This invigorated him, making heat pool within him. He gripped the incubus's generous hips, using force to slam him down on his cock harder and faster, while thrusting upward to lodge himself further inside of him.
"Iyaaa~n! ♡" Kazuichi squealed, while throwing his head back, seeming to like that. "So good...! ♡ Your cock reaches so deep inside me... rubbing me in all the right places~!♡"
He then sat up, looking down at Gundham with darkened pink eyes. He began running his hands up his chest before pushing up the top to his bikini, and revealing pink, perky nipples. He circled them with his fingers, rubbing and twiddling them while he continued to ride Gundham's dick.
"Aaahh~♡ D-do you like seeing me play with my nipples?" he asked, clearly wanting to put on a good show for Gundham. It was a rather arousing sight, seeing him arch his back and drool from the pleasure he brought upon himself.
Kazuichi toyed with the pointy little buds for a bit longer, moaning shamelessly while he did. Eventually, he stopped, however, opting to switch his position again... he seemed to enjoy being very active.
He leaned back, placing his hands on the other's legs to steady himself, while spreading his legs wide, displaying his whole body for the other to see. He continued to move his body up and down on his cock, using his legs to push himself up and down. Gundham could see his somewhat small penis bounce and wobble, while underneath he watched his own cock disappearing again and again into his tight hole. "Mmm... do you see that? Your thick cock is stuffing me so full~♡" The incubus moaned. "It's so perfect... aaah~♡ j-just what I needed...♡"
Seeing the erotic display, Gundham felt turning tighter and tighter. His instinct began to take over his movements, making him pound into Kazuichi's body, who seemed to be able to keep up with his pace perfectly, no matter how erratic it grew.
His cock gave a thick pulse within him, which the incubus must have felt. "Nhhh... I can feel you're getting close... ♡" he said, biting his lip.
He then sat back up, and leaned over the other's body. As Gundham continued to thrust underneath him, he reached around and cupped his balls in his hand. He then gave them a tug and stretched them away from his body. It added a whole new level of stimulation, that pushed Gundham right over the edge. He pulled Kazuichi down against him as hard as he could, while squeezing his eyes shut and ramming deep into him, before releasing with a loud groan.
"Guh...♡ So thick...♡" The incubus remarked, feeling his hole being filled with warm, soupy
wetness. "Your load feels incredible~! ♡"
Then, everything was rather still for a second, as they both caught their breath, and Gundham lay basking in the warm afterglow of his second orgasm of the night. Kazuichi then lifted himself off his now soft penis, and let it slip out of his hole.
Gundham thought that this would be where things would end, now that he had given the demon a pretty generous amount of his semen in both of his holes. However, this would be proven wrong by the creature's next actions.
Kazuichi scooted backward so that he could sit between Gundham's thighs. Without warning, he then lifted his legs (his pajama pants had managed to be kicked off all the way during their mating), pushing them up towards his chest and spreading them apart "Nnnh...! W-what are you doing...?" Gundham questioned as he tensed slightly.
"Mmm, I'm just exploring..." Kazuichi responded nonchalantly, while curiously observing the other's puckered asshole twitch. "Y'know... there are plenty more ways I could make you cum..."
He leaned down, and used his sharp teeth to nibble on the human's inner thigh, making him let out a sharp gasp. The incubus smiled at him mischievously, before continuing on, kissing down his thigh. He then settled on the tender spot between his genitals and his anus, and stuck out his tongue to give it a lick, using a good bit of pressure.
"Uuunnh..." The sensation was odd for Gundham, who had not been expected to suddenly be touched in such an area. It certainly wasn't unpleasant, however.
"I know right here will make you feel super good~" Kazuichi said, as then brushed his tongue against his asshole, coating it with his thick, hot saliva. Gundham moaned feeling him lap at the sensitive rim, tracing small circles around it.
Gundham could feel his hole starting to throb and itch intensely... He could only assume it was the power of other's spit taking effect, making his body crave more pleasure. His cock was getting hard again too, slowly rising back to full mast.
He then felt the tip of Kazuichi's tongue push past his opening, and flicked against the sensitive nerves just inside of him. He did this for a bit, batting the wet tendril in and out, before pushing it deeper. Swirling it around several times, he then pulled back slightly, and continued to curl his tongue up and tease just around the opening. Then he removed it entirely, and raised his head.
Gundham watched as he brought two fingers to his mouth, and began to suck on them suggestively, while keeping keeping eye contact with him. He pumped them in and out, suctioning his lips around them and even moaning softly, clearly wanting the other to imagine it was his cock.
He then slowly pulled them out, a thin trail of saliva still connecting his tongue to his index finger. He brought the digits down, and Gundham felt a finger circle and tease his asshole before it slipped inside. Gundham groaned, arching his back.
Kazuichi pushed the digit in and out, wiggling it around inside him as he did. He then forced in a second finger, making scissoring motions to loosen him. They burrowed deeper within him, until they found a special spot and curled up against it.
"Aaaaahhhhn...!" Gundham cried, as a jolt of white-hot pleasure shot through his entire body. He had never felt this sensation before.
Kazuichi chuckled at him. "See? It's feels good, doesn't it?" He continued to stroke his prostate inside him, rubbing and pressing against that spot over and over again. His other hand then cupped Gundham's leaking cock, and began beating him off while continuing to massage his prostate.
Gundham felt the pressure build rapidly inside of him, his hips starting to rock against the other's fingers. Eventually, a third finger was pressed into him, and he couldn't stop his moans from growing louder and louder. He felt himself about to burst, his hips starting to undulate as he thrusted into Kazuichi's fist. He screwed his eyes shut as he came with a loud grunt, coating the span of the other's hand with his seed.
The incubus lifted his hand, and began to lick every sticky bit he could from his hands, before going back down on him to clean the rest off of his cock, and even licking a trail up his stomach to get the drops that had landed there.
Panting heavily, Gundham was at the end of his energy after all he had endured. He swore he could see stars behind his eyes, and his body felt like it was ready to just melt into the mattress.
"What? You gotta tap out?" Kazuichi teased, noticing how the other seemed to be barely able to keep his eyes open. "Awh... I only made you cum three times in a row and you're already wiped? Man, humans are so cute~♡"
Gundham narrowed his eyes at him. "I told you... I am n-not a human..." he huffed. The other clearly did not understand that this was just a temporary form, and that was the only reason he was able to weaken him...
Kazuichi rolled his eyes. "Yeah, yeah... you said you're a demon right? Well, let me tell ya... demons don't sit around letting incubi play with them like toys..." he said with a lewd smirk. "They're powerful... and forceful... they hold me down and take what they want..."
Gundham felt a sudden surge of energy take hold of him, taking these words as a challenge. He hated being mocked, and decided then that he would have to prove himself to this creature. He pushed himself up, and grabbed Kazuichi's wrists.
"Huh...?" Kazuichi was shocked by the sudden action. Gundham then used his strength to force him underneath him, pushing him against the mattress and pinning his hands to the sides of his head. "Oof...!"
"You want me to use force, do you?" he questioned, staring into the other's widened eyes. "Then I shall, and prove to you I am no mere mortal." He then crashed their lips together, jamming his tongue into his mouth. He twisted his tongue around the others, licking at him and trying to taste as much of his aphrodisiacal saliva as he could to bring his arousal to the level it needed to be while humping the body under him to stimulate his cock. And, like magic, it worked. In a matter of seconds, he was rock-hard and ready to breed the bratty incubus.
The kiss then broke, with the incubus's tongue left dangling from his lips with hunger, as he fed on the human's display of dominance.
Gundham released Kazuichi's wrists, and grabbed him roughly by the thighs, pushing his legs up. He took hold of his cock, aligning it with his asshole, before jerking his lips forward, hilting himself with a single thrust. He watched as Kazuichi's eyes rolled back, as his wet, swollen lips formed an o-shape and he let out a long moan. "Ooooooh!~♡"
He wasted no time setting a firm pace fucking into him, his current stamina exceeding his natural endurance. The heavy sound of skin hitting skin quickly filled his bedroom as his hips smacked against his ass.
He felt his legs wrap around his waist, pushing on his back and forcing him deeper inside of him. "Fuuccck, so good! ♡ Your dick is just so good!~♡" Kazuichi moaned, as drool spilled from the corner of his mouth.
"Hngh... Y-You really love my cock that much, whore?" Gundham grunted, feeling as his walls squeeze around him. The fast movements made his greedy hole suck his cock harder, working hard to milk him for more of his seed.
"Yes~! ♡ I love it! ♡ I love love love it! ♡" Kazuichi exclaimed, while nodding his head fervently. "Oh fuck, hardeerrr...! ♡"
"Then, s-say it... admit I am a demon..." Gundham said, while slowly down his movements just slightly.
"Aaahh...♡ I-I'll only say it, i-if you fuck me harder...♡" Kazuichi said as he stared into his eyes, grinning up at him. Gundham gritted his teeth in determination, before shifting his position. He placed the other's his legs over his shoulders, while leaning over him, bending his body in half. He fought against his body's exhaustion and increased the speed of his thrusts, letting his primal urge to just keep his hips moving and breed this creature take the forefront of his mind.
His cock plunged deeper and harder into the other than it ever had before, making the incubus's toes curl in pleasure as he cried out. "Hyaaahn~♡ Y-Yeessss, you are! You're my big, powerful demon!~♡" he shouted. "Fuck I'm gonna cyuuum! ♡"
Kazuichi then arched off the bed, his eyes rolling back and his tongue lolling as he came. Virile ropes of spunk shot out from the tip of his penis, painting his tummy white. The sensation of him tightening up around his cock had Gundham following him over the edge, his cock throbbing with the need for release.
"Cum in me, please! ♡ Give me that creampie! ♡ C-Cum in meeeee!!~♡" Kazuichi squealed, feeling the heavy pulsations inside of him. "Nyaaahah~♡ It's so good! I w-wanna be so full of your cum I look pregnant...! ♡"
"Y-Yes! I shall f-fill your womb... a-and infect you with my infernal offspring!" Gundham growled, as he made sure to drive further into Kazuichi, his balls smacking against the bottom of his ass as he clenched and released, flooding his insides with his seed. It pooled inside his belly, stuffing him full.
They both heaved, the air full of electricity as they shared in the afterglow. As soon as Gundham pulled out, he felt his exhaustion hit him like a bus. Not only his balls, but his entire body had been fully drained.
He collapsed on top of the other, crushing him with his weight. He heard Kazuichi's giggles, as he nudged him off of him and helped him slide over to his side, so that he could lay back on the mattress. He then cozied up against him, pressing their bodies together.
"Mmm~♡ I can feel your cum already leaking out of me... you gave me so much~♡" the incubus hummed, sounding rather satisfied with the warmth he had filling his ass, nourishing his body with its essence of life and vitality. "I might have to come again the next time I get hungry~♡"
"I m-must admit... I would enjoy that quite a bit..." Gundham muttered. He would be a little sad to see him go, but was intrigued by the possibility of another visit. He had experienced many pleasures with him he had never felt before, and still felt so entranced by him.
"Hehe, guess I'll see you again soon then!" Kazuichi then leaned into him, and planted a tender kiss on his neck. "Sweet dreams, my demon~♡"
Gundham's eyes then fluttered closed, as he was unable to fight off sleep any longer.
And just like that, the pink-haired incubus was gone. He left no trace of himself behind, leaving Gundham to wonder whether or not it was all a dream once he awoke the next morning. From then on he would wait, night after night, to see if he would ever visit him again, while saving up his essence to ensure he could provide a satisfying meal when he did.