Chapter Text
Despite what you'd think, Reigen has never been fucked by a ghost.
Working in the exorcism business, he was naturally aware of sex curses, aphrodisiacal demonic possessions, psychosexual poltergeists and the like. He had never really encountered any, but he was aware of them.
Ekubo had once told him ghosts didn't really feel sexual urges, seeing as their noncorporeal, ectoplasmic bodies couldn't do much about those. That wasn't the whole truth, however.
Or at least that's what Reigen could deduce from the absolute mountain of muscle that had him pinned down on the bed right now.
Ekubo's true form had weirdly textured skin, covered in holes and ridges. The bright green of his body was almost enough to hurt his eyes if he stared at it for too long, not taking into account the ghostly aura that gave it a disconcerting pallid glow. His purple lips were twisted into a crooked smile, his lack of eyebrows and red dimples not helping his manic glare look any less inhuman.
Reigen had never been fucked by a ghost, but he was about to change that.
“Are you...” He swallowed, hand traveling down Ekubo's ripped torso, down gigantic pecs and rock-hard abs, and Reigen would be lying if he said he wasn't into bodybuilders at this point. “Are you sure it'll fit?”
“No.”
Ekubo's smile widened, hands bigger than Reigen's entire head on either side of his body, “I think you'll die.”
Reigen shifted uncomfortably, giving him a glare. “Cut the act”, he spat, fingers pinching his lower abdomen in reprimand. “You say that, but you were pretty diligent with preparing me to take this...monster.”
Reigen's eyes wandered down. His legs spread, propped up by Ekubo's well defined hips, gave way for his ghost cock to rest against his stomach, and it was unbelievably huge. At the very least thirteen inches of flesh and muscle, fat and veiny and pulsating against his, a faint yellowish glow framing its translucent form.
Honestly, when this relationship started, Reigen was already wondering what their sex life would entail. And until then, having Ekubo possess his one-night-stands to have his way with him was going well enough, but...
It was Reigen who asked about his true form. His humanoid, powered up form, the buff, hunky, and most importantly, tangible form. Obviously, he was curious. interested. And, admittedly, a little bit turned on by the prospect of having sex with a ghost.
Reigen had thus spent the last few weeks training his ass. He wasn't exactly proud about disclosing it, but he could stretch pretty wide now. After taking his biggest toy down to the hilt without much lip-biting effort, he had decided by himself that he was ready to take Ekubo in his true form.
Looking at it now, he might've been wrong.
Ekubo's cock was so much bigger than his biggest toy. The head by itself looked like it could stretch him just enough past his limit to bring him to tears. So, yes, Reigen might've jumped the gun on this one, as usual.
But he wasn't about to back down from a challenge.
“Stop staring”, Ekubo grinned, “you're gonna make me blush.”
Reigen was the one to blush instead, shoving his shoulder, but Ekubo was just ridiculously huge enough that he didn't even budge.
“S-shut up”, he cursed himself for stuttering, “I'm just...thinking about it.”
Ekubo hummed. “Yeah, I can tell”, a hand moved from his side to wrap around his dick, and Reigen sucked in a sharp breath and felt his face flush when it dawned on him just how small and pathetic he looked in Ekubo's hand. “Thinkin' about it long and hard, aren'tcha?”
Ekubo laughed, and Reigen almost gave up on the whole thing. “Fucking annoying...” He breathed, bucking his hips slightly, just enough to fuck into Ekubo's fist in one long stroke. He let out a shivering sigh, and Ekubo gave him a groan of approval, pupils blown, looking heated and aroused while Reigen's hips chased that feeling again.
Ekubo's dick twitched once. Reigen felt it harden against his abdomen.
It couldn't possibly get any bigger, could it?
“...I think I'm ready”, Reigen said.
“Yeah?” Ekubo's thumb rubbed his tip torturously, mindlessly while he stared him down with concern. “As much as it would be fun to split you in two perfectly clean halves with my dick, I don't exactly wanna kill you, y'know?” He grumbled, avoiding Reigen's loving gaze, blushing a pale purple as he spoke again, “Besides...I'd get my ghostly ass exorcized if anything bad actually happened to you.”
Reigen failed to fight back a smile. “And you would never let that happen?”
“And I would never let that happen”, Ekubo turned his attention back at him, growling, face flushed, bringing a gigantic hand to cup his face, “You sexy fuckin' moron.”
Reigen laughed, leaning into the touch. He hummed. Ekubo acted all tough and reckless most of the time, but it was moments like these that reminded Reigen of the reason they even started dating in the first place.
“Mmnh...” He shifted again, his dick grazing against Ekubo's, glancing at it expectantly, still mesmerized by its size in comparison to his own puny human body, “...I want it really badly, though...” And that brought a cocky grin to Ekubo's face.
“Yeah?”
“Mhm...”
“You've been wanting to taste this cock for a while now, haven't ya?”
Reigen raised his hands without a word, letting Ekubo pin them down by his wrists, clutching both in one hand, his sheer size a constant reminder making Reigen's head swim. Ekubo's other hand held the base of his cock, and he rolled his hips, grinding against him once before lining himself up with his entrance, already quivering with each deep breath from Reigen.
“Mm... come on...”
“What's the magic word?”
Reigen glared at him.
“Ekubo, please.”
It didn't sound submissive or pleading in the slightest, and he did it on purpose. Ekubo snickered, finding his annoyance as funny as it was endearing. “Alright, you win. Just try not to scream, okay?”
Easier said than done. As Ekubo's absolute monster of a cock rammed into him, Reigen felt his voice escape him without as much as a chance to dial it back, and he gasped desperately when the head of Ekubo's cock stretched him open, reaming him as far as it could go without any pain, and there was still a long way to go.
“Fuck—!”
“Hate to say I told you so”, Ekubo mused. He pushed himself into him even further, groaning as he did so. “Relax, I'm already halfway in there...”
“Only half?!” He cried out, arching his back, loud sobs escaping wet lips as he tried to adjust to his size. “No way...!”
He was already heaving, gasping for air, feeling so overwhelmingly full with Ekubo only halfway inside him. With his hands held in place, there wasn't much he could do except try to focus on his breathing. Ekubo was so big, and it was stretching him so wide and reaching so deep that he felt lightheaded.
The problem was, he was so full and it hurt so good. Reigen knew immediately that would be a huge problem for him for the rest of his life, because the pain had him reeling. His heart could just about beat out of his chest when Ekubo' fat cock finally seemed to be only inches away from being completely hilted inside him, and Reigen felt a pleasure he had never experienced before from being so unbearably full and stretched way past his limit.
“All in”, Ekubo said at last, and Reigen could almost cry, “Need to take a second?”
He paused to take a deep breath. Ultimately, he shook his head.
Ekubo seemed suspicious of his quick reaction, perhaps because he could tell from his pained expression, his reddened cheeks, his shaking legs and his limp dick that he was having one hell of a hard time.
“Are you sure? You look like you're barely hanging on—”
“Ekubo.”
Bright green eyes turned to look at him, and Reigen would've clenched around Ekubo's cock if he could, but not even that was possible as that stupidly large member was sheathed into him.
“Please”, he gritted his teeth, feeling Ekubo twitch inside him, all the muscles in his lower body struggling to keep him from being torn apart, “Just— fuck me, please.” He opened his eyes, glossy and swimming with tears, and Ekubo had a dumbfounded expression on his face that would've gotten a cackle out of him in any other situation. “Don't be gentle.”
He watched as something seemed to crawl under Ekubo's brightly colored skin, shape distorting from his shoulders and down to his lower abdomen, and when he realized what was happening, it was already too late to try and stifle his scream.
Somehow, that already unbelievably big dick buried inside him had gotten even bigger. Inching closer to the s-shape of his colon, now, fattening up inside him, forcing tears out of his eyes and sending a violent shiver down his spine. Ekubo was putting his shapeshifting to good use. Reigen felt his rim straining around Ekubo's cock, his entire body tensing up to try and adjust to his new size. His own dick jerked, leaking precum. He whimpered.
“Oh shit— look at that.”
He felt Ekubo's hand rest on his stomach, and realized he had his eyes squeezed shut, so he fluttered them open tentatively.
“Wha—?”
His eyes pointed at where Ekubo's fingertips were touching. Ekubo gave him a crooked smile.
“Look. It's fuckin' nasty.”
His hips snapped forward, and Reigen's sanity almost immediately left him. Ekubo pulled out as far as halfway, then shoved it back in again, a loud sob leaving Reigen's throat before he could register it.
“Look.”
Reigen tried to make sense of what he was seeing, then, lightheaded and weak, his whole body shivering and his head heavy, mind completely fogged up by the way his body ached, and still he chased that feeling of being torn open.
Ekubo pushed it in again, slowly, and with that thrust of his hips, Reigen realized what he meant.
A stupidly large bulge popped up in his lower stomach each time Ekubo pounded him. His cock was almost perfectly visible under Reigen's skin, soft stomach revealing the shape of Ekubo's cockhead thrusting deep into him, burrowing its way inside him.
Ekubo's muscular thighs slapped against his ass again and Reigen moaned so loud he surprised even himself.
That had been enough time to take it in. Ekubo was picking up the pace now, rough thrusts somewhat frantic, railing him into a shuddering mess, balls smacking loudly against his back, huge cock squelching in and out of him, the most obscene noises spilling out of Reigen in a steady stream as that muscular monster on top of him bred him thoroughly.
Ekubo gave him a maniacal laugh that left a ringing in his ears, voice echoing abnormally when he spoke, a metallic scraping to it that only showed when his powers were at their highest point.
“Fuuuck, that's good!” He cackled, letting go of his wrists to grip his waist with both hands, holding him in place as he fucked into him like a fleshlight. “Fuckin' pliable, look at you! Shhhit, you wanna take this as a full-time job?”
Reigen had seemingly lost his ability to talk, because what came out of him was a string of unintelligible noises, a needy moan and a breathy whine.
“God damn, you were right”, Ekubo kept going with a growl, “You're taking it like a champ. Feel free to tap out, though.” He hummed, a shit-eating grin plastered on his face. “Most people don't last until I cum.”
Reigen tried to say, “Not me”, but it came out as a loud sob. Ekubo seemed to love watching his boyfriend try to speak with a humongous cock plowing him, because he raised Reigen's hips, making it so only his head and his shoulders touched the mattress, and the rest of his slender body was wrapped in his strong grip.
“What was that?”
Reigen breathed in response.
“G-go...h-ha...ha—arder...”
The smile that creeped its way across Ekubo's lips was enough to activate his fight or flight instincts, but there was nowhere to run.
“Sure.”
Well, he asked for it.
Ekubo pulled out of him, then, and Reigen cried out when he felt the walls of his ass flutter at the loss, ass gaping, breathing ragged and feeling so painfully empty as Ekubo murmured happily, spreading his cheeks even further so he could get a good look.
“D-don't stare...” Reigen pleaded, draping one arm over his face, utterly embarrassed.
“Sorry, sorry", Ekubo dismissed, clicking his tongue. He flipped him over then, Reigen letting out a surprised gasp, Ekubo manhandling him into position on his hands and knees, and slapping him once, hard as a bullet train on his ass when Reigen placed his knees in a way he didn't approve of.
“Alright, breathe in.” He said, a playful grin dancing on his lips. “I'm about to rearrange your guts just like you wanted.”
Reigen almost replied, “what does that mean”, when two strong hands grasped his wrists and pulled his arms back, forcing him to arch his back as that huge cock entered him again, and Reigen screamed, head dropping forward and tears spilling out, his body shuddering uncontrollably.
“Fuck! Fuckfuckfuck—!”
He gasped for air, feeling full again, opening tearful eyes to stare down the bulge on his stomach, even more apparent now that Ekubo had him on his knees.
Ekubo's voice sounded close to his ear, now, chiming in with his characteristic mischievous tone, cold air blowing on the shell of his ear, because wherever Ekubo touched him, it was freezing cold with raw spiritual energy, “Arataka”, he called in a sing-song way, chuckling darkly by his ear, “I'm not stopping until I get to cum, got it?”
Reigen could only reply with a whine. Ekubo started to move, then, and Reigen swore he could feel it poking his lungs.
“I really wanna see”, his speech was interleaved with deep groans, breathless, grunting with each deep stroke, “how much of my cum I can dump inside of you before it starts leaking out”, he chuckled, thrusts becoming shorter and faster, hard as a piston, “You're taking it well, aren't you? Fuck...who knew you could be such a fucking slut for this huge cock?”
Reigen moaned in response, compliant and well behaved, taking him all the way in, drool dripping from his mouth and down his neck.
“Shit—! I’m close...” Ekubo growled, “Try not to pass out…”
Reigen cried out something that sounded like a yes. That was enough for Ekubo to pick the pace back up, fucking him with a purpose, holding him up without any care, just keeping him in place so he could thrust deeper, pound harder, force him open and use him like a cheap whore.
“Ekubo—!”
“You want it?” Ekubo gasped, strong hands almost crushing his wrists, “You want this huge cock to knock you up? Yeah? Want it deep in your belly?”
“Fuck—”
“You wanna come with this monster cock, you little slut?”
“Fucking, please—”
Ekubo freed one of his arms, ghostly hand coming to tug on his blonde hair instead, pulling his head back with unmeasured strength.
“Let me hear you fuckin' come.”
He didn't even have to ask. Reigen's hand wrapped around his cock without a second thought, stroking frantically, curse words escaping his parted lips as the stimulus from both his front and his back tipped him over the edge.
Ekubo came almost immediately after he did. Gripping his waist hard enough that Reigen knew would leave a mark, yanking his head back in a way that didn't let Reigen stifle his moans, Ekubo used his ass to milk himself dry, fucking into him while his cum shot out in ropes, Reigen's stomach swelling up, filled to the brim.
When Ekubo finally pulled out, slowly, painstakingly, Reigen cried out in pain. He was uncomfortably full, and it oozed out of his gaping asshole, and when Ekubo let go of his body he flopped pathetically on the bed, a whimpering, sobbing mess.
He felt cold, used and alone. That was until Ekubo wrapped him up in a hug from behind, humming happily against his skin, kissing his hair where it stuck to his sweaty forehead, and Reigen gave a shuddering sigh and chased the disturbing but familiar coldness of his ghastly body.
“Let...” Reigen breathed harshly, “Let us never, ever do this again.”
Ekubo laughed. His hand tilted Reigen's chin, bringing his face close, and kissed his lips gingerly, a smile still on his face, pressed against his mouth.
“Don’t tell me you didn’t enjoy it tremendously.”
“I did, but I don’t want to risk my life doing it a second time”, he snapped back, nuzzling his palm, chest still heaving and his hole still puckering, aching. “Almost split me in half, you ogre.”
Ekubo chuckled, and his voice had a warmth to it when he spoke again.
“Love you too, babe.”
Reigen brought a hand to scratch his bald head, a gesture that still struck him as weird, as intimate and heartwarming as it was.
“Yeah”, he smirked, “Shut up.”