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In hindsight, it probably was a bad idea to allow Eiden to do anything to him. But Yakumo has always been weak to Eiden’s request, weak to the desire and the love he holds towards Eiden that Yakumo ends up going along with his whims—fully trusting Eiden to never do things Yakumo won’t like.
So when Eiden appeared in the kitchen one Friday afternoon, leaning on the door frame with a familiar grin on his face, masking a request behind an innocent question… Yakumo couldn’t find the will in him to deny him.
"Yakumo, I just read a book about serpents in the library…” Eiden slowly made his way towards Yakumo who was preparing a dessert for later, the seductive sway of his hips clearly showing his true intention. “It had quite an extensive knowledge on a serpent’s anatomy, and… do you know what that book mentioned?”
Yakumo sensed the seduction in his tone, on the hand touching his left shoulder and trailing down the embroideries on his cape. He had an inkling of the specific part Eiden would enjoy, but at that time, the rising arousal numbed his brain. “What… did the book say, Mr. Eiden…?”
Eiden’s fingers went lower and lower, stroking his stomach through the fabric. Yakumo tried to hold his pants back as Eiden pressed his thigh between his legs, puffing hot breath against the exposed skin on Yakumo’s neck. Then Eiden’s palm stopped just above his crotch and pressed on it firmly.
“…that a serpent has a pussy…” Eiden alternated between rubbing and pressing as if he was searching for something. “—or as they stated it, a slit where they keep their hemipenes sheathed until they are ready to mate…” A tongue licked on Yakumo’s gemstone earring, and Yakumo muffled his whimper with his palm. “Now I’m wondering… do you have those too in your half-serpent form? A pussy and double dicks…?”
Although spending most of his life in his human form, Yakumo was no stranger to his own anatomy. He saw no point in lying to Eiden who probably had memorized the entire book into his head, so Yakumo shyly nodded. Eiden’s low chuckle tickled his ear, and Yakumo trembled, his cock already growing half-hard inside his pants.
“Is that so…? Then…” Eiden ran the tip of his index finger along the place where Yakumo's slit would be if he was in his half-serpent form. "I'd like to play with—study them... if you would allow me…"
And that was how Yakumo ended up in his half-serpent form, naked and sprawled on the bed, with Eiden peering down intently at his soaked slit. Eiden’s wandering hand had been playing around the opening of his slit as they kissed, teasing on the edge without actually touching it. His double cocks were itching to come out of the sheath and take their place inside Eiden, but Eiden gave him an order that Yakumo couldn’t help but obey.
“I wanna study your cute pussy first, so can you keep them inside for me? Good boy.” He gave Yakumo one more peck on the lips before straddling Yakumo’s lower serpent body. Heat radiated from the palms roaming his scales, soothing and addicting at the same time. “Now for the good part!”
With his back propped on several pillows, Yakumo can see everything Eiden is doing to him. These are both the best and the worst thing because Yakumo can see Eiden thumbing each side of his slit, rolling and parting it open, exposing his glistening inside to his eyes. Yakumo unconsciously holds his breath every time Eiden spreads his slit, and he gasps as Eiden releases his hold, closing up his slit again. Eiden’s careful rolling turns into gentle massages with occasional shallow dips of his thumbs.
“Nnn…” Yakumo instinctively arches his back, and his eyes flutter close; the sensation of having his slit played is strange yet not at all unpleasant. Rather addictive, even, stoking up the burn in his stomach. “Mr. Eiden… that’s—ah…”
Eiden seems to take his moan as a positive sign because while Yakumo has his eyes closed to savor the pleasant tingling on his slit, Eiden slips both of his thumbs inside and starts a slow thrusting pace. Yakumo jolts up in surprise, eyes shooting open and his walls clenching around the delightful intrusion. “M-Mr. Eiden!”
“Yes…?” Eiden stops moving and looks up at him. Among the haze of lust on Eiden’s light brown eyes, Yakumo spots the concern painted on them. “Does it hurt?”
It’s far from painful; on the contrary, Yakumo can’t wait for Eiden to thrust faster, to touch the cock buried in his slit. Yakumo hides his heated face to the pillow and squeaks out an answer. “…no, it… it feels… g-good…”
“Alright… I’ll continue, then. Tell me if you don’t like it.”
Those thumbs thrust several more times into his sensitive slit, drawing out long moans from Yakumo as well as a gush of slick juices from the inside. Yakumo tries to not stare at Eiden’s focused expression, but his eyes betray him. He keeps glancing back towards Eiden, watching his thumbs disappear inside him and come out dripping wet. Yakumo feels his walls leaking out more slick and loosening from the stimulation.
Pressure accumulates in him, his cocks once again demanding to emerge from the slit, held back by Yakumo’s sheer will to be a good boy for Eiden and let him explore his slit to his heart’s content. Yakumo grips and pulls the bedsheet beneath him, hips and lower body squirming each time Eiden fucks his slit a bit deeper, a bit faster, before returning to its initial leisure pace. “Mr. Eiden… please…”
Please spread him wider, please fuck him faster, deeper, harder. Please touch his cocks, please rub his nipples, please kiss him, please everything. Tears fill his eyes, and the moan turns to whimpering sobs. His pleas, unfortunately, go unheeded. They are drowned by the voice of Eiden’s remark as he spreads Yakumo’s walls apart and observes their contractions.
“I think it’s ready.” Then Eiden replaces his thumbs with three of his fingers, and they quickly resume the previous thrusting, only faster this time. “I can feel your cocks, they seem bigger than usual…” Eiden’s palm is a burning weight on the corner of his slit, fingers digging deeper and deeper inside. “Keep them inside for a bit longer, okay?”
“Y-yes, Mr. Eiden—ahn…” The call of Eiden’s name tapers into continuous, whimpering moans. Yakumo’s hips tremble, his serpent tail wiggling restlessly, the serpentine instinct screaming at him to wrap his lower body against something so he can mate bursting on the seams. As eager as his confined cocks that are pushing against his walls, touched by the tips of Eiden’s fingers.
He hears Eiden’s laugh and feels his lips kissing and mouthing the scales on his hips, working their way upward to suckle on his pebbled nipple. Yakumo wraps one arm around Eiden’s back, and the other one holding on to Eiden’s head. Several drops of tears slide down his cheeks when Eiden rolls his nipple between his teeth at the same time as he shakes the three fingers buried deep inside Yakumo’s slit.
The sudden shock of pleasure has Yakumo screaming. It is a pleasure unlike he has ever felt before, completely different than the times Eiden fingered his ass. A combination of slick and pre-cum spurts out from the side of his slit, his hips pushing up to get Eiden’s fingers further inside. His tail thrashes wildly, and were he in his human form, Yakumo would’ve locked his legs around Eiden.
Eiden doesn’t stop until Yakumo blabbers about how he’s going to cum and gently pulls his soaked fingers out of Yakumo’s quivering slit. Yakumo’s chest heaves up and down, taking large gulps of air to his lungs, the sight still a bit blurry from the tears. His arms go slack on the bed as he temporarily rests from the rush of pleasure.
“Yakumo… your little pussy is so wet, it’s so cute…” Yakumo nearly explodes out of his body when Eiden brings them to his mouth. “And your slick… it smells so good, the scent of your essence… I’m wondering how it tastes…”
To his horror, or delight, Eiden’s tongue darts out to lick Yakumo’s slick off his index finger. And he moans, in pleasure, as though he just tasted the sweetest, most delicious syrup he ever gets his hands on. Eiden then sucks on the rest of his fingers, humming happily. “Oh, Yakumo… you taste delicious. I’m gonna have some more…”
“…ha-have more of wha—nnghhh!”
His question is abruptly cut short by his own yelping. Eiden parts his slit once again, but instead of pushing his fingers in, he bends down to directly lick on it. Slicks smear on his lips, and that tantalizing tongue Yakumo likes to suck runs over them. “Mm, perfect. Bon Appétit.”
“M-M-Mr. Eiden!” Eiden doesn’t waste any moment; he immediately buries his face in his slit, licking and slurping like a parched man. Though his tongue isn’t as wide as his fingers, Yakumo reacts all the same. It might not have the width and reach of Eiden’s fingers, but it’s way more flexible.
Yakumo’s hands grab Eiden’s head, torn between wanting to pull Eiden’s face impossibly deeper or pushing him away so Yakumo can escape from the onslaught of pleasure so he can breathe. His body decides it for him; his lower body slithers up from the floor, wrapping around Eiden’s legs to keep him there, unmoving. Eiden obliges with his unspoken request and burrows his lips, his tongue to the slit, leaving only his nose and eyes outside.
“…mmh… delicious…” Eiden mumbles briefly before diving down again to continue eating out his slit. The tongue’s motion changes from thrusting to circling, lapping on his sensitive walls eagerly. “…they’re… leaking… mmm…”
Occasionally the tip of Eiden’s tongue will brush on the head of Yakumo’s cock, and keeping them inside becomes increasingly difficult. Orgasm steadily approaches him, building up in his belly and pulsing around his hips. Yakumo stammers out a broken warning, because this time he doesn’t think he can hold his cocks inside his slit anymore, but Eiden practically ignores it. Rather, he increases the speed of his tongue-fucking and hooks four fingers alongside his tongue, rubbing the walls with the pads.
“…Mr. Eiden… ahh, I’m… no, I’m—” He tugs on the roots of Eiden’s hair, snapping his hips up and clenching down on the tongue and fingers in him. Blood rushes in his veins, on his ears, the pleasure climbing high to the peak. His cocks break free from his control, forcing their way out. “—cumming!”
Eiden withdraws his face in time; Yakumo’s cocks emerge from his slit, shooting out thick semen from their tips, while his slit spurts out more slick juices. They land on Eiden’s face, Eiden’s hair, his body, the bed, everywhere. His tail squeezes Eiden’s legs tighter as the orgasmic shock courses through his entire body from his head down to the tip of his tail, and Yakumo only has half the mind to worry if he accidentally hurt Eiden.
“Whoa, you came a lot… that’s so hot.” Eiden’s awe-filled chuckle snaps Yakumo’s mind out of the haze of climax. “Look, I’m drenched now.” And without a single shred of shame, Eiden swipes all the cum and slick on him with his palm, then licks them all clean. “Tastes delicious too…”
“Ngh… M-Mr. Eiden…” Yakumo whimpers, his cocks twitching from where they're resting on his stomach. His body feels hot, his instinct and nerves ablaze, and he’s unsure if he wants to fuck Eiden with one of his cocks or if he wants Eiden to fuck his slit—or both if that was even possible. “…please, I… not enough… I want m-more…”
“Haha, of course, once is not enough, right, Ya-ku-mo?” Eiden holds Yakumo’s serpentine cocks in both hands, examining them closely. Yakumo whimpers and tries to wiggle away, it’s embarrassing to have his weird-looking cocks being stared at like that, but Eiden is having none of it. “Uh-uh, don’t move, I’m not done with you... I wanna see if they look exactly like in the book. I’m learning about a serpent youkai’s anatomy now.”
Yakumo hides his face with his arm, too embarrassed yet unable to avert his gaze away. Eiden, under the pretense of ‘learning’ about his anatomy, strokes the shafts using both of his hands—whereas his thumbs rub on the small, blunt spines covering the tips of Yakumo’s cocks. His stroking is teasing, intending to spur Yakumo’s thrumming arousal further. “Hmm… they look exactly like in the book. This part, then this, and these too…”
“Mr. Eiden… p-please don’t… tease me, I’m… ahn…” Yakumo’s body jolts and shakes from the overstimulation, yet he can do nothing to stop Eiden’s fun. Or more like he doesn’t want to. Eiden isn’t showing any disgust or fear at his serpentine cocks, and his serpent side preens at the silent praises Eiden showers him with his touches.
“Tease? I’m not teasing you, Yakumo, I’m studying you.” Eiden gives his cocks two more squeezes before retracting his hands. “As much as I’d like to continue studying your cocks, there is another place that also needs to be studied further…”
A wide-eyed Yakumo watches as Eiden spreads his puffy, loose slit open, no doubt studying it like he did with Yakumo’s cocks. Yakumo should’ve pushed him away, should’ve mentioned how shameful it is to have his insides being scrutinized, but Eiden’s hot breath brushing on the sensitive opening stops any word from escaping.
“Here I go…” Eiden hums, reaching into the slit with two fingers. Yakumo ends up submitting to Eiden and allows him to poke and prod around his slit. He shudders and jolts every time Eiden touches a particularly tender spot, but otherwise, he voices no complaint; the only noises that come from his lips are moans and sobs. “Oh, now that it’s loose and your dicks are out, I just realized… your pretty pussy is a bit different from the book?”
“D-different… how?” He has never seen that part of himself, nor has he ever read books about serpent’s anatomy, so he doesn’t know how his slit is any different from other serpents. “—wah! M-M-Mr. Eiden, t-too deep!”
“It’s a bit, hm… how should I say it…” Eiden’s fingers are scissoring his slit, whereas his other hand keeps the opening separated. The two fingers reach even further than before, nearly swallowing half of Eiden’s palm; Yakumo can feel them up to his stomach. “It’s unlike the slits owned by male serpents as shown in the book? Yours seem more like—oh…”
He falls silent in an instant, and dread creeps into him. Does Eiden think his slit is strange because it’s different than the one the book depicted? If so, will Eiden get repulsed by his strange slit that he’d hate to see Yakumo in his half-serpent state again? Another batch of tears threaten to fall from his eyes, this time from fear.
“M-Mr. Eiden, forgive—”
The apology falls short on his lips, apprehension turns into confusion when he sees Eiden’s bewildered expression morph into one of mischief. Of pure lust and desire. “Mr. Eiden…?”
“Who would have thought…” Eiden then changes his position, and Yakumo gets a nice view of Eiden’s erection straining against the tight underwear, a huge wet spot forming on the fabric. Yakumo doesn’t have to look to know that the backside must be drenched too in his slick; he swallows down the saliva in his mouth to moisten the dryness in his throat, imagining Eiden’s hole slick and ready. “This is gonna be so exciting.”
During the time Yakumo was fantasizing about thrusting both of his cocks inside Eiden’s hot, awaiting hole, Eiden has taken off his underwear and returned to straddling Yakumo’s lower body. Except this time he also pushes his cock between the plush lips of Yakumo’s slit just below his cocks, beads of pre-cum mixing with Yakumo's slick.
“…’m gonna fuck you nice and hard, Yakumo...”
Eiden is going to put his cock inside his slit—
Their eyes lock, and in the next second Eiden’s whole dick is sheathed deep inside Yakumo’s slit. Yakumo throws his head back in time with Eiden’s loud groan, the fullness stretching his slit renders him speechless. His fists pull on the damp bedsheets, his whole body seizing up and trembling as Eiden starts a rough, punishing pace that jolts Yakumo upwards.
“Aahh, it’s so wet… so good, Yakumo… nnh…” His knees are braced on each side of Yakumo’s lower body, hands holding Yakumo’s hips in bruising grips. Eiden bends down until their chests are touching, sandwiching Yakumo’s dicks between their stomachs. “Your pretty pussy feels—ungh… incredible, I can’t… haah, can’t get enough of it…”
In this position, Eiden’s alluring scent drifts to his nose, and Yakumo inhales it greedily. His own essence wraps around Eiden’s, mingling in the most pleasant way that makes Yakumo grows even more aroused. Eiden’s cock is reaching so far inside him, fiery heat scorching his insides and sending numbing pleasure down his spine. Yakumo’s head spins and eyes unfocused, even more so when Eiden pulls his dick all the way out until only the tips remain inside, before slamming down so hard the slapping noise echoes in the room.
And that thrust hits something inside Yakumo; a place so good he doesn’t know even existed before. His snake body shouldn’t have a prostate, so what was that…?
“Ooohh…! Mr… Eiden!” Yakumo can’t resist the babbles, the chants of Eiden’s name, and the pleading for more. More of Eiden’s cock, more of his touch, more of Eiden’s cum coating the walls of his slit. He has experienced firsthand how delicious it feels to have Eiden cumming inside his ass, and now he longs to have Eiden blowing his load in his slit. “…there—! Ri-right there…!”
“…so your pussy… has a sweet spot too, huh? Haha, I will remember it…” Eiden nibbles his neck, sucking some marks on his skin, the pounding of his hips never ceases. Yakumo feels him grow even harder inside, the essence-filled pre-cum flowing from Eiden’s cock stirring his gut. “Does it… ngh… feel good, Yakumo? Do you like… my cock—hhaa… inside your pussy?”
“Yes, yes…! So good…!” His eyes roll to the back of his head, forked tongue lolling out of his parted lips. Instinct overtakes Yakumo’s mind, and his tail resumes its previous position around Eiden’s thighs. The place where they’re joined together sends soaring delight all over his body. “…I love it… I love—mmh… M-Mr. Eiden’s c-cock…”
Lock. He needs to lock Eiden there, to keep Eiden’s cock in him. He needs to mate with Eiden, needs to have Eiden's seed pumped into him.
“Hhaah… Yakumo, damn… your pretty pussy… it’s sucking me in…” Eiden stops thrusting once Yakumo’s tail locks him in place. His movements halted, Eiden has no other choice but to repeatedly rut into his slit. “I can’t pull—unghh… my cock away even if I wanted to…”
Yakumo is ready to burst for the second time that night. He writhes, he begs, and he holds Eiden close to him, as tight as the squeeze of his tail. Both of his cocks drip copious amounts of pre-cum on his stomach, some of them smeared on Eiden’s skin. “Mr. Eiden… Mr. Eiden… touch… please…”
“Still want more? As you, ughh… wish…” Eiden grabs them both as best as he can with only one hand, pumping them up and down as he continues to stimulate Yakumo’s newfound sweet spot with his cock. His other hand presses down on Yakumo’s lower stomach. “Can you feel it…? Hnghh… I’m so deep inside you… your pretty, wet pussy… feels amazing, so different than… nghaa—in the book…”
Mind blank as a white sheet of paper, Yakumo nods and lets out a long moan. He’s no longer capable of forming proper words, not even to call Eiden’s name or to beg him; surrendering all his senses to the pleasure blasting him from the inside. Just a little more, just several more grinds, just a few more strokes on his dicks—
“Your pussy is… wet, and soft, and tight… so damn erotic, these squelching noises… your hot, pretty pussy… I wanna keep fucking it…”
—but what plunges him into the depth of bliss is Eiden’s question, spoken between his praises and moans, brimming with astonishment.
“Yakumo, could it be that… you have a womb too…?”
He doesn’t know, he had no one to teach him about the reproductive parts he can’t see. And yet for a reason unknown, the thought of having a womb, of carrying the eggs fertilized by Eiden’s seed is enough to trigger his orgasm. Cum explodes out of his cocks, juices seeping out of his insides to Eiden’s cock. It’s far more intense than the previous one, and Yakumo can’t stop shaking, the waves of climax seemingly refuse to recede.
“Yakumo… your walls… your pussy, they are… milking me—gonna cum!” Eiden groans, struggling through the binding around his hips to deliver several more sporadic thrusts into Yakumo’s slit before releasing his cum inside him. “…that’s it…! Ahh…!”
Oh. The serpent residing in Yakumo purrs in satisfaction at the warmth filling his stomach. Eiden continues to jerk, releasing a few more spurts of cum, and Yakumo absent-mindedly rubs his lower stomach. He feels so full; he wonders if the amount of seed Eiden pours into his stomach is enough to make him gravid with eggs… with Eiden’s children.
If his body was capable of doing it, that is. Yakumo isn’t too sure what Eiden assumed is correct, but it’s nice enough for his imagination.
“Yakumo, are you okay?” Eiden asks, caressing Yakumo’s cheek with the back of his hand. His gaze is soft and affectionate, and Yakumo’s chest swells with love it almost feels too painful to bear. “I wasn’t too rough, was I?”
Yakumo smiles and shakes his head. His slit is a bit sore and tender right now, but in a way that makes him crave more. “I am alright, Mr. Eiden… it felt really good…”
“That’s great… It was wonderful for me too. But…” Then Eiden’s eyes stray down to Yakumo’s stomach, where Yakumo’s cocks are resting—both still hard and dribbling sticky pre-cum on their tips. “You’re still hard. I guess I haven’t fucked your pretty pussy enough? Or do you want to stick your dicks in me? I’m all wet too inside…”
It is then that Yakumo realizes that the cock buried inside his slit still retains its hardness. Yakumo flushes in shame, but he can’t deny that he hasn’t had enough of Eiden. Whether Eiden decides to fuck him again or ride his cock, Yakumo will accept it. He just wants to have Eiden for himself, to hold Eiden all night until neither of them can climax again.
“…p-please, Mr. Eiden… a-anything… anything is alright as long as it’s Mr. Eiden…”
Eiden laughs and peppers small kisses all over his face.
“You’re so cute, Yakumo… how can I deny you when you’re asking so sweetly like that?” He doesn’t pull his dick out and straddle Yakumo’s lap to ride him. Instead, he starts rutting again, each shallow thrust forcing cum and slick to spill out of Yakumo’s swollen slit. “I’m gonna enjoy your pretty pussy again, but then…”
The next sentence is whispered in Yakumo’s ear, accompanied by a teasing lick and nip near his gemstone earring.
“…I’d like you to fuck my wet hole with both of your dicks.”
They continue for several more rounds, ruining the bedsheets and any fabric around them with their sweat, tears, saliva, cum, and slick way beyond repair. Only when the first ray of sun rises from the horizon did the two of them finally fall asleep in each other’s arms. Yakumo’s lower serpent body wrapped securely around Eiden’s body, his face tucked onto Eiden’s neck as they slumber in peace.
And the question Eiden asked Yakumo before remains unanswered.