Chapter Text
Grace couldn't sleep. He stares up at the dark ceiling, Y/N's sweet cries echoing in his ears. He's barely been able to think about anything else since it happened, walking in on Rocky fucking Y/N, her pussy flush against his carapace. The memory of it open and pulsing as the last of Rocky's egg slipped out onto the floor had his cock aching in his pants, leaking and throbbing against his underwear.
"Grace awake, question?" Rocky asks in a low tone, startling Grace. He turns his head to look down at Rocky, tapping his fingers together. "Grace reproductive organ hard, statement."
Grace's breath hitches, of course Rocky would know. He's far too perceptive to be completely distracted by Y/N to not notice Grace walking in the room. He would've heard everything; the blood rushing to his cock, the slick noises of his hand as he jerked himself, the sound of him cumming after her.
"What Grace thinking about, question?" Rocky asks and he shakes his head.
"Nothing," he was quick to say, cheeks flushed hot.
"Liar," Rocky retorts and climbs up onto the bed, the mattress sinking under his weight. "Tell Rocky, command." His shift in tone sends a jolt down Grace's cock, pulsing against the fabric of his boxers.
"Jeez, Rock, do I have to tell you? I mean, you were there," Grace says, having turned his gaze back to the ceiling.
Rocky was quiet for a moment, then he warbles something and says, "Grace was thinking about Rocky mating with Y/N, question?"
"Yeah, bud," he admits, scrubbing a hand over his face, "I can't seem to get it out of my head. I thought I would be grossed out by it but I was..."
"Aroused," Rocky finishes, "Rocky saw you."
"I figured you did, nothing gets past you, pal," Grace chuckles sheepishly. He clears his throat and asks, "so...how did it start? Between you and Y/N?"
Rocky perks up, almost as if he were excited to share, "it was during movie," he says. "After Rocky went to go look for Y/N. I interrupted her private human time."
Grace blinks, "wait— you walked in on her masturbating and that somehow led to you two having sex on the floor?"
"Yes. Rocky felt bad after interrupting, offered to help her finish," he says, "Y/N made such pretty sounds, Rocky wanted to touch."
"You did a bit more than touch," Grace points out and Rocky hums, nearly vibrating from his own memories.
"Grace?"
"Yeah?"
"You are still hard, statement," he says, placing his hand on Grace's upper thigh, drifting upwards to brush along his dick. Rocky hadn't thought about touching Grace before, his mind too preoccupied with its sudden interest in Y/N. But now he was curious. "Rocky take care of Grace, question?"
Heart hammering in his chest, he shucks off the blanket and starts wiggling out of his sweatpants and boxers. What was he doing? Was he really about to let Rocky jerk him off? Grace frees his cock from its confines and it smacks against his stomach, precum already beading at the tip. His breath hitches when Rocky takes it in his hand, making a curious sound when it pulses in his grip.
Rocky gives his shaft an experimental stroke and Grace hisses at the friction. "Grace not wet like Y/N," he observes.
"Y-yeah, um…h-hold on a second, Rock," Grace says, pushing himself onto his elbows. He gathers a wad of saliva in his mouth and spits into his hand, mixing it with precum until his shaft was slick, glistening in the low light. Rocky resumes touching, running his fingers over the hard, velvety skin. Grace tries to stifle his noises, biting down on the inside of his cheek as Rocky jerks him off.
In the bed next to him, Y/N begins to stir, woken by the strange noises. She rolls over and opens her eyes. Her stomach flips at what she sees. Rocky was in Grace's bed with one hand around his cock and the other in his mouth, his stony fingers rolling around his tongue. The sounds she was hearing was Grace's moaning and the slick sounds of a spit-soaked cock. Y/N should've guessed something like this might happen at some point, after he helped her with Rockys eggs, the bulge in his flight suit bordered on obscene.
Rocky knows she's awake from the way her breathing pattern changed, the uptick in her heart rate. He stops and Grace whimpers, the sound going straight to her clit.
"Wha-wha-what, why'd you stop?"
"I see you two have gotten started without me," she teases, the sound of her voice startles Grace.
"Y/N!" Grace chokes, panic flashing across his face, mirroring her own expression when he caught her and Rocky in the act.
Y/N slips out of bed, "Mary, could you turn on the lights, please?"
"Certainly, Y/N."
The mattress dipped as Y/N climbed on, eyes glued to his cock still in Rocky's hand, the tip flushed dark and leaking. "Jesus, you're huge," she breathes, shuffling closer to Rocky to get a closer look. Licking her lips she looks at Grace for permission and when he nods his consent, her hand is on him too. The temperature difference between their hands alone was nearly enough to send him over the edge. Y/N and Rocky pump their hands together, up, down, twisting, quickly finding a rhythm that has Grace whimpering, his hands scrambling to hold onto something. He arches into their touch, another spurt of pre-cum dribbling onto their fingers.
"Pretty," Rocky says, "but messy."
"Yes, Grace is very messy," Y/N says, feeling her underwear dampen with slick.
"Leaky," Rocky muses, tightening his grip, twisting on the upstroke. Grace was gone, moaning and begging for them not to stop, hips thrusting into their hands.
"Grace gonna cum, question?" Rocky asks, open slightly and leaking at the bottom of his suit.
"Already? We’ve barely touched you," Y/N says, dragging her hand lower until she nearly touches his balls.
Grace whines and pries his wet eyes open to look at them, "please— you're gonna kill me."
"You're a big boy," she says, "I think you can handle it."
Grace shudders, head falling back against the pillow. Their grip on him grew firmer, working in tandem to drive him insane. Both wet and leaking for him.
"C'mon, Dr. Grace," Y/N coos, "you gonna soak our hands with your cum?" Grace makes the prettiest little noise in response, just this ruined, strangled sound that shoots through her pussy like lightning. She clenches around nothing, a small moan of her own slipping past her lips.
"Please," he whispers, drool sliding down the side of his mouth.
"Please what?"
"Please— f-fudge— please let me cum. Pleasepleasepleaseplease..." he begs, rutting desperately in their hands.
"Good boy, Grace," Rocky coos, they stroke him faster tighter, rougher, pulling more sounds out of him.
"C'mon baby, cum for me and Rocky," Y/N says. Grace nods frantically and it hits him like a freight train. His whole body goes taut with it, wet mouth open in a silent cry. He explodes in thick, hot spurts, spilling onto their fingers and his stomach. When it finally stops he falls back onto the mattress, trembling, pretty blue eyes glazed over. His cock lays against his skin, half-hard still and twitching.
Y/N reaches for something to wipe his cooling spend off her hand and stands up, trying to ignore the pulsing need between her legs. She finds a water pouch and sticks a tube through it, holding it out for Grace to drink from. He gulps it down.
"Thank you," he says, catching his breath.
"For the hand job or the water?"
"Both."
Y/N chuckles and climbs back onto the bed, pulling her shirt over her head, "you're welcome," she says, shorts and panties quick to follow, a string of slick clinging to the gusset. "But I hope Rocky and I didn't wear you out too much."
She leans back and opens her legs, giving Grace an eyeful of the mess between her thighs. He swallows and pushes himself onto his knees. That fantasy she had about him a week ago was nothing compared to this, the slide of his bare skin against her, flushed and hot, their breath mingling before he kisses her hard and deep. Y/N wraps her legs around his waist, moaning into his mouth while her hands run through damp blond strands.
Grace pulls away from her lips to attack her neck, hands roaming down to squeeze her breasts, fingers kneading soft flesh as he sucked a nipple into his mouth.
"Grace," Y/N whines, squirming against him. Grace pulls away, one hand trailing down her body to cup her sex.
“Wow," he whispers, running his index finger over her folds, "you're really wet and all from jerking me off?"
"Uh-huh," Y/N says, tilting her hips up slightly.
Grace runs his thumb over her clit, his cock twitching when he slides a finger into her pussy. "Gosh, baby," he says, nearly drowned out by the loud moan tumbling from her lips.
Y/N bucks against his hand, "want you in me," she says.
"I am in you," Grace retorts, rubbing his thumb against her clit again, making her jolt.
"Fuck— no. I want you to fuck me," she clarifies, moving her left hip against his newfound hardness.
Grace turns to look at her, "are you sure?" He asks and she was nodding before he could finish the question.
"Please, I need it. Need you.”
That was enough. Grace pulls his finger from her and presses a kiss to the side of her mouth, pulling back to line his tip up with her entrance, rubbing it in her juices. Slowly, Grace slides in, inch by inch. Y/N whimpers against his shoulder, nails digging into his skin. Grace wasn't as thick as Rocky was but the intrusion burned just the same.
Grace bottoms out with a deep shuddering breath, pressing a kiss to her cheek. "You okay?" He asks after a moment.
"Mhm," Y/N confirms, running her hands up his biceps.
"All right...I'm gonna move now, okay?"
"Yeah."
Before Grace could move, Rocky reminds them that he’s still there on the bed with them. “Awe, I'm sorry," Y/N apologizes, "we didn't mean to forget you."
"Y/N okay, question?"
"Yeah, I'm okay, Grace is just big," she says, noticing the puddle of arousal at the bottom of his suit, the open tip of his ovipositor sticking out of his ventral seam. Y/N's pussy clenches around Grace at the sight of it. An idea crosses her mind, her cunt might be full of Grace but her mouth was empty.
"Rocky, honey, how about you come closer and let me make you feel good," she says and he tilts his carapace.
"With your hand, like we did with Grace?" He asks and she shakes her head, a smile tugging at the corners of her lips.
"No, with my mouth," she says.
Grace's stomach flips and concern crosses his face, remembering how thick Rocky was in comparison to a human. "Are you sure?"
Y/N glances at him for a moment the back to Rocky, who's ovipositor had descended a little more, "yeah, it'll be fine," she says, "c'mere, Rocky, let me suck you."
Grace watches them from above, thrusting languidly in and out of her wet warmth. Rocky was fully erect now, a mere inch from her face. Y/N hums and licks the head of his cock.
"O-oh, fudge!" Grace exclaims, watching her take Rocky into her mouth. His cock has a slight metallic taste to it but Y/N didn’t mind. She begins to suck, mindful of her teeth, swirling her tongue around him. Rocky trills, he thrusts forward without meaning too, causing Y/N to choke and gag loudly on him. It sends a thrill up her spine but the sound she made alarms both Grace and Rocky.
"Holy— are you okay?" Grace asks, hips stilling.
Rocky moves to pull himself out of her mouth but she stops him with a small whine, drool dribbling from the corner of her mouth.
"Rocky didn't hurt Y/N, question?" Rocky squeaks and she shakes her head, glancing at Grace.
"I-I think she's okay, Rock," he says, adjusting his grip on her hips.
"Mhm," Y/N confirms around Rocky, nodding her head. She grips onto his suit, tugging forward. Hoping Rocky would get the hint. He thrusts again, cautiously this time. Grace follows, moving in and out of her slick cunt at the same slow speed, caressing her breasts.
After a while, Y/N moves her hips with impatience, urging Grace to fuck her faster. "Are you sure?" He asks again and she narrows her eyes at him in what was supposed to be a frown. "Okay," he concedes and picks up the pace. Y/N hoped Rocky would too but he doesn’t budge. Whining, she pulls back and he slips himself out of her mouth.
"I want you to fuck my mouth," she says, "like you did my pussy."
Rocky taps his fingers together, "I don't want to hurt Y/N."
"You won't, please, Rocky? I want it." She nearly begs, reaching out to touch his arm, "I trust you."
”Promise to tell Rocky if it's too much," he says and lines his slick cock up with her lips again.
"Yeah, I promise," Y/N says, opening up for him. He slides in, further than before but not quite hitting the back of her throat yet. Rocky takes his time, thrusting slowly in and out of her mouth, feeding her his ovipositor inch by inch.
It was sweet torture, frustration was building to the point she just might cry if they didn't hurry up and fuck her properly. 'More' she tries to say around Rocky but it sounds more like a garbled moan than a word. Humphing, Y/N thrusts her hips down on Grace, trying to fuck herself on him. He catches on quick.
"You want more, sweetheart?" He asks and she nods her head the best she can, wiggling. And Grace, who was feeling just as desperate, pulls his hips back and slams into her, making her moan loudly around Rocky's cock. The vibration of her throat has him making a garbled sound, thrusting forward and finally, finally hitting the back of her throat.
Now sure Y/N could handle the both of them at once, they thrust again and again and again, hard and fast, making Y/N moan loud and unabashed, her eyes rolling back in her skull. Grace's hips and upper thighs were covered in her slick, unable to hold back his own noises.
"H-how does her throat feel, Rock?" Grace asks.
"Tight, tight, tight," Rocky chirrups, thrusting faster now.
"Yeah, I bet it is," he says, snapping his hips forward to match his pace. He looks down at Y/N drooling all over Rocky, eyes glazed over. "Is this why you were being so impatient? Wanted Rocky and I to ruin you?"
Y/N nods, gagging softly around Rocky's cock. Grace takes a hand off her hip and brings his thumb down on her clit, rubbing in tight circles. She squirms against him, gripping at whatever part of him she could reach. The coil in her gut wound tighter and tighter until it snapped and she cums with a muffled cry. The feeling of her walls clamping down on his cock nearly tips Grace over the edge.
"That's it, Y/N," Grace praises, but didn't slow down, the need for his own release settling at the base of his spine, "that's a good girl." He barely giving her enough time to recover before once again bringing his thumb down on her clit, his brain overrode with the desire to see her cum around his cock again.
'Too much!' Y/N's brain was screaming but she didn't want it to stop, thighs trembling around his hips. Grace got his wish sooner rather than later. Y/N cums again, nearly screaming, shaking from the force of it. Her throat was vibrating around Rocky's cock so hard, he pulls out of her mouth in fear he might release and stuff his eggs down her throat.
Grace's hips were still snapping, pace growing sloppy as he reached his precipice. "Gonna cum," he warned, "gonna— where?"
"In," she whines hoarsely, "cum inside me, Grace. Please." She gasps when she feels him spill hot inside her. He groans loud, babbling praise while he squeezes her hips, shoving his cock as deep as it could go. When he has nothing else to give, Grace collapses against her, chest heaving. He barely feels her shaking fingers come up to brush through his hair, lightheaded and giggling.
"Wow," she manages after catching her breath, getting a tired chuckle out of Grace. Slowly, he gathers enough energy to pull out of her, hissing through his teeth. He leans back on his haunches, watching his cum spill out of her raw, red cunt.
"I'll be right back," he says, pressing a kiss to her knee. He stumbles out of bed and fumbles with his sweatpants before leaving the room. Y/N turns to Rocky and taps his xenonite suit with her finger.
"You didn't get to finish," she says, voice cracking.
"Y/N want Rocky inside her after Grace, question?" He asks, sounding both concerned and unsure.
"Y/N wants you to fuck your eggs into her, statement," she says, parting her twitching thighs further. Rocky comes around the side of the bed and she helps guide his ovipositor between her puffy lips. He slips in easier this time, though it's still a stretch. He starts to thrust and she winces a little, over-sensitive.
"Y/N okay?"
"Yeah, baby, I'm okay, just a little sore, that's all," she reassures. "You don't have to go slow, you can fuck me as hard as you want, I can take it. Please?” With her permission, Rocky pulls out halfway and thrusts back harder, the open tip of his cock kissing her cervix.
"Fuck!" Y/N cries, arching off the bed, "yes!"
Grace returns to the room with a pouch of water and a damp, warm cloth. He was about to open the door when he hears the familiar sound of xenonite slapping against human skin. He blinks behind his glasses, opening the door. Rocky took his place between Y/N's thighs, her face twisted in pleasure, splotchy and tear-stained. Grace sets the cloth and water down and approaches the bed, watching Rocky disappear in and out of her, his cock covered in a mix of his and Y/N's cum.
"You doing okay, Y/N?" Grace asked, brushing her hair off her sweaty face. She whimpers in response and he looks up at Rocky.
“Y/N desperate and needy,” Rocky says, feeling himself grow heavy with eggs. “Want Rocky’s eggs.” He was getting there but it wasn’t enough, he needed to feel Y/N’s walls convulse around him again. He brings his thumb up to her clit and starts to rub, she jerks against him.
“Fuck!” She sobs, fresh tears gathering on her waterline. Y/N musters what energy she could to lift her head and look down at Rocky, watching him piston in and out of her, toying with her clit with expert precision. Y/N feels the coil tighten again, only this time it feels different, heavier.
“Fuckfuckfuckfuck! M’gonna cum!” she squeals.
“Yes!” Rocky squeaks, doubling his efforts, “good girl, cum for Rocky!”
Y/N’s body seizes up taught, clenching hard around his ovipositor. She chokes on her scream and gushes around him.
“Holy Moses…” Grace breathes, watching wide-eyed her squirt all over Rocky’s suit. Eventually it stops, a few small spurts shooting out with each involuntary thrust of her hips. Soon enough, Rocky was singing, shaking, pumping his eggs into her again while she lays there, breathing shakily. He pulls out slowly, trembling and crumples on the soiled sheets.
Grace took that as his cue to take over. He grabs the water and washcloth, “do you need my help getting them out?” He asks and she shakes her head.
“Nuh-uh, I can do it.”
“Okay,” Grace sits back and observes. Y/N pushes, moaning weakly as each egg exits her body, slipping out of her well-fucked cunt and onto the soaked mattress. She stares at them, swallowing around her sore, dry throat.
Grace sticks a straw in the water pouch he brought and hands it to her. He picks up the, now cold, washcloth and apologizes when she whimpers in discomfort at the first swipe. Carefully, after he cleaned their combined fluids off her body, he picks her up and moves her to her bed, laying her down gently. Turning around her checks on Rocky, his ovipositor back inside his body.
“You okay, pal?” Grace asks and Rocky warbles lowly, seemingly just as spent as she was. He chuckles and rubs a hand over the top of his carapace, “sleep it off, I’ll watch, okay?”
Grace returns to Y/N and slips under the covers with her, propping himself up against the xenonite barrier behind him.
“Grace?” Y/N says, her voice barely above a whisper.
“Yeah?”
"I wanna watch Rocky fuck you next."