Chapter Text
To be fair, it doesn’t start out this way, but.
Things… got out of hand.
Grace knows he’s in trouble the moment Rocky flexes his fingers, says, “okay, not bad,” and then proceeds to barrel into Grace so that they both end up bouncing onto the bed.
“Rocky!” Grace cries out in shock, only to choke when he feels hands that definitely aren’t his own grab at his thighs and spread them hard and fast. The motion is so abrupt and confident at the same time that he gasps, feeling a little lightheaded at the way Rocky climbs over him with a tilted head and a smirk.
“I have consumed over two thousand hours of human pornography, my Grace,” Rocky says, and his eyes are dark and mischievous as he smooths a hand down Grace's side. His touch is still so hot, like his Eridian blood pumps through his now human veins, and Grace feels his face go crimson as he moans. “This is an opportunity for us both.”
“An opportunity to wha - jesus christ!” Grace gasps and throws his head back when Rocky leans down and proceeds to attack his neck.
For someone who hasn't had teeth for more than a few minutes, Rocky is skilled at the way he digs his canines into Grace's sensitive skin and bites down with just enough force that Grace wails.
He claws at Rocky's shoulder and back, his fingers scrambling desperately on the plain white t-shirt the Eridian scientists had given him for when he woke up. It's just thin enough that Grace can feel lines of lean muscle and small deposits of fat, and it makes him dizzy, especially when Rocky licks at the hollow of his throat and croons when Grace gulps.
“Sweet human, my sweet Ryland,” Rocky coos, and there is something distinctly non-human with the way he talks. It's like there's another layer to his voice, deep and subvocal and predatory, and Grace moans again, high-pitched and feeble when Rocky reaches up and pinches a nipple through Grace's shirt. “Those whores in your pornography have nothing on you.”
“W-Where the heck did you learn to talk like that?” Grace chokes out, whimpering as he obediently turns his head to the side and lets Rocky suck a mark right up behind his ear. “Oh, ahh, Rock, n-not so rough - “
“No,” Rocky growls. The sound is gravelly and intense, and arousal shoots up Grace's spine so suddenly that he pants with it, his breath hot and short as he glances up at Rocky's handsome face and mussed hair. “I have waited almost five years to touch you like this. Do not lie to me, my Grace. The Mary is not conducive for private masturbation sessions.”
Grace feels like his head is going to explode.
“You heard all that?” Grace says weakly.
“Did you think I didn't?” Rocky says with a grin. It's such a good look on him. Grace had felt it when Rocky was biting on his neck, but his canines really are a bit sharper than a normal human's would be, and they glint just the slightest amount. “I have watched you for four years on the Mary, my human. You would sob my name into your pillow - “
“Oh, god, Rocky - “
“While you desperately leaked all over your hand. Selfish, selfish, selfish,” Rocky says, rucking up Grace's shirt and squeezing one of his pecs. The touch is both rough and worshipping at the same time, and Grace squeals when Rocky mercilessly pinches his nipple again. “Not letting me watch. Not letting me touch, not letting me taste.”
Grace cries out when Rocky leans down and bites around his nipple. He's relentless as he sucks and pinches and licks, all while his other hand reaches up and fondles Grace's other pec. It's so perverted, the way he does this, like he can't get enough of Grace, like he can't stop, and god, Grace wishes he could do more.
“I thought Eridians don't like eating.” Grace sniffles as he tries to rein in the tears while his cock twitches pathetically in his pants. His chest is starting to flush red with blood, and he knows he must look like a mess, all the way from his glasses getting knocked askew to the bulge in his crotch that grows with every second.
“Eridians have an indiscriminate palate.” Rocky purrs, and he leans back up so their noses are almost touching. Jesus, he smells so good. How does he smell so good? “Try to breathe. This is going to get… intense.”
“Wh… What?” Grace sobs.
“Oh! Oh, ah, ah, ah, o-oh, Rocky, Rocky!” Grace's wet shouts are almost in complete rhythm with the hard, unforgiving thrusts Rocky gives him from behind.
“Good,” Rocky says in satisfaction from above him. “Keep talking, my Grace.”
“D-Deep, s-slow down, s-slow - oh! Ah! Hnng, oh, god, f-fuck.” Grace moans pathetically as he clings to the damp bedsheets as best as he can, but his fingers keep scrabbling and missing as Rocky slaps into his throbbing and sensitive hole without any thoughts for Grace's poor rim.
Rocky's cock is hard and throbbing inside of Grace, barely made wet with the water based lube Rocky had used to finger Grace open while the human shouted and bucked his hips at the relentless way Rocky would prod at his prostate.
Even now, Rocky's impeccable memory seems to be at work, because he hits Grace's abused prostate without fail every single time, causing jolts of pleasure and searing arousal to run through his body.
His own dick, which is smeared with semen from his previous two orgasms (one from Rocky practically finger-fucking him and another from when Rocky instructed him to get on his knees and proceeded to fuck his throat, resulting in Grace coming untouched) is red at the head and weeping again with pre-come. It's sore and his balls ache, but it's so good and it's so much all at once.
“How many more do you think you can come tonight, my Grace?” Rocky says, sounding infuriatingly put together as he continues to pound into Grace's wet and sore asshole. “Two? Three?”
“O-One,” Grace can barely even push out, his face wet and stained with drool and tears. His glasses are fogged up and he's sure that the lenses are permanently ruined with the small splatter of Rocky's come on them after the sloppy blowjob Grace had given him. It turns Grace's brain to mush just thinking about it. “Oh, g-god, Rock, p-please just - “
“No, one is not enough,” Rocky says, and his grip is tight and commanding as his fingers dig into the back of Grace's hair and yanks on it gently. It's just enough that a small amount of pain brushes up against the pleasure, and Grace shrieks when he's forced up onto his weak knees.
Rocky presses his chest to Grace's back, their sweat-slicked skin rubbing against each other in time with Rocky's rough thrusts, and Grace can't help but moan pathetically. Rocky's so d-deep like this, and it's like Grace can feel him at the back of his throat all over again, just from the other side.
“I have counted one thousand and six hundred times you came on the Mary without me, my Grace,” Rocky mutters into his ear from behind. His hand reaches up and places itself gently around Grace's throat, rubbing a thumb against the hollow of it while Grace wails with every thrust. “You owe me one thousand and six hundred orgasms. I won't be satisfied until I have seen your face for every single one.”
“Rocky!” Grace shrieks in a mix of both painfully deep arousal and disbelief, and he comes.
He almost blacks out with it. His dick, weak and useless from his previous two orgasms, twitches pathetically as it spurts out only two little streams of liquid before giving up. It burns but it's so fucking good, like Grace is being turned inside out, and he shakes horribly as he gasps through it, sobbing as he feels Rocky grind up against him.
“Good, good, good.” Rocky purrs. “Good, Grace.”
Rocky thrusts in as deep as possible, making harsh, grinding motions as he does, and when he comes, he does it with a low snarl, his fingers digging into Grace's thighs that are already marked with bruises in the shape of Rocky's mouth.
Grace collapses onto the bed, his weak cries peetering into sniffles.
His limbs feel like they're made of lead and his head is stuffed with cotton.
He's never felt so good.
“What a mess.” Rocky clicks his tongue as he easily spreads Grace's legs open to reveal the thick pool of semen gathering at Grace's surely red and swollen rim. Rocky presses a thumb to the sensitive skin and hums in delight as Grace moans weakly. “You are so dirty everywhere I look, dear Grace.”
“That's all your fault,” Grace manages to mumble. “Take responsibility.”
“Hmm.” Rocky's hold on his thigh tightens, and a small spark of arousal curls in Grace's gut. Oh no. “Later. For now, turn around. We go again.”
“Again?” Grace gasps, but he already feels himself lifting his hips up and shuffling into a better position.
“Again,” Rocky says.
Again, again, again.