HDSena
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Five Times Rocky and Grace Fucked Up, and One Time They Fucked by powerxtrip
Fandoms: Project Hail Mary (2026), Project Hail Mary - Andy Weir
08 Jun 2026
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Summary
Grace and Rocky explore each other's bodies on the trip to Erid. It goes poorly, generally speaking.
Bookmarked by HDSena
09 Jun 2026
Bookmarker's Notes
The little jerk doesn't even need to play the best friend card, because before asking to shove his entire hand inside him, Rocky debuts the first functional exosuit, and he gives Grace a hug. The immediate result of the hug is every muscle in Grace's body going so tense he thinks he's having a stroke, and then relaxing all in a rush.
It's a little like being on Ketamine, and oh, hey, he partied in University, huh? His neck decides it no longer wants to hold his head, and he collapses half onto Rocky like he's been tranquilized. Rocky cuddles Grace for 2 hours and 23 minutes, and Grace spends a very reasonable 79 minutes of those weeping, and then he falls asleep, cradled gently in Rocky's arms.
"Do you wanna stick your hand in me," is the first thing Grace says when he wakes up, because he's an insane person having sex with an alien in space, and he wants that alien to fuck him really badly.
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Summary
When Rocky's mating cycle starts and doesn't stop, he has no one to turn to but Grace.
His cycle never would have started in the first place if Grace wasn't so very.. wet..
But it's never just about the mating, is it?
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Adrian's guide to falling in love with Rocky's leaky space blob (in two seconds flat)Bookmarked by HDSena
24 May 2026
Bookmarker's Notes
“It’s not supposed to,” Rocky pouts. He’s been enduring his body’s reactions for nineteen days and he’s as irritated as he is heated. Stupid, stupid, stupid, so far away from any Eridians able to help and unable to help himself, unable to stop listening to Grace’s clumsy whistling in the echoing hygiene chamber even though he knows exactly what will come of it.
“Mating cycle not supposed to start without mates nearby,” the machine drones. It’s as close to a confession as Rocky’s able to stomach. He begs Grace to understand, begs him without words to see the meaning Rocky has woven into the flat noises that the translation device produces. So much meaning, lost, because the machinery cannot read the hesitant offer Rocky taps onto the floor, cannot pick up on the soft, soft, soft hesitation between his notes.
Grace asks, “Is there anything I can do to help?” and Rocky could warble with relief.
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I Want You (All Over Me) by little_soka
Fandoms: Project Hail Mary (2026), Project Hail Mary - Andy Weir
14 May 2026
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Bookmarked by HDSena
20 May 2026
Bookmarker's Notes
Ryland feels something slip over his ring finger to rest at the base.
He looks down to see a beautiful intricately woven xenonite ring on his finger and hot tears finally spill down his cheeks as he presses a kiss to the ring, then to Rocky’s claws.
"Rocky design ring for Grace. Human custom, like in movies. Make *extra* official," he says proudly. "Grace happy, question? Leaking again."
"These are happy tears," he says, sniffling. "I'm the happiest I've been in a very long time. Maybe ever, actually." Ryland pulls Rocky into a tight hug and they both settle deeper into the warm sheets. "All thanks to you, sweetheart."
"Happy happy happy," Rocky flutes, settling in to watch his beloved mate sleep. "Sweetheart Grace sleep. Rocky watch mate."
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Design Thinking for Everyday Life by lyricl
Fandoms: Project Hail Mary (2026), Project Hail Mary - Andy Weir
09 May 2026
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Summary
"So how humans pick partner?"
"Well, sexually speaking, I guess a lot of humans go off of looks,” said Grace. “Physical appearance.”
“Physical appearance!” Rocky was scandalized. “No good. Bad variable. Tell you nothing. Have to run experiment. Have to try.”
Bookmarked by HDSena
15 May 2026
Bookmarker's Notes
"Thanks Rock." Grace flung himself down onto a foam roller, rolling his glutes as he looked up at the ceiling. "What attracted you to Adrian? Like, sexually? What made you want to be more than friends?"
"No understand," said Rocky. "I tell Grace, Adrian have crazy ideas at thrum, ideas Rocky could not believe. So Rocky ask Adrian to try."
"But why did you want to try? I don't know how to explain. How did you know you had chemistry, I guess?"
"Chemistry not involved in make attachments. Mechanics."
"No, I mean...argh," Grace yanked at his hair and slid up the foam roller until it was under his back and his head could bonk down on the floor.
"Grace watch out for skull! Brains all soft in there like egg!" Rocky trilled. "Grace barely have enough brains without damage ones he have!"
Grace rolled his eyes. "I just mean, how did you know you liked Adrian that way?"
"How know if not try?" Rocky sounded genuinely exasperated. "Stupid question. Try is how know. You meet Eridian, Eridian interesting, maybe good singer, maybe good scientist. Ask if want to try."
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Forays Into Xenophilia and Other Moral Quandaries by Anonymous
Fandoms: Project Hail Mary (2026), Project Hail Mary - Andy Weir
10 Jun 2026
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Summary
Grace is repulsive.
Grace is disgusting.
Grace is a creeping horror made manifest.
And Rocky wants Grace so badly it makes him look stupid.- Language:
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Bookmarked by HDSena
04 May 2026
Bookmarker's Notes
The stretching. The way Grace would unfold, entirely ungracefully and yet entirely Gracefully, after hours hunched over. Up to his full height and then further still: his body pushing up onto the very ends of his feet - toes curling and gripping onto the aluminium floor; his huge diaphragm muscle pulling down as far as it could so his ribcage could fully inflate; his arms reaching upwards, the joints pulling apart, those slender fingers curling and clenching and then stretching outwards. Joints snapping and clicking disturbingly organically as bubbles deep inside them popped. He'd drop his arms after a moment to slide his fingers through his hair - pulling on the strands harder than seemed pleasurable - then further down to fumble his spectacles off and press into the soft tissue of his face - kneading the small, intricate muscles in his forehead, cheeks, around his jaw (with his mouth wide, wide, wide open showing his teeth and tongue and saliva), and down further still to dig into his neck and shoulders and upper thorax. And all the while he would grunt and sigh and let out high, reedy, breathy sounds that were so, so, so close to Eridian mating calls that Rocky would have sworn he'd been spending his off-hours listening to Erid pornography, had Rocky actually brought any of that material with him.
And Rocky would focus focus focus on him - unable to hear anything else, unable to shift his attention away - until Grace would slump down into his normal posture again and give into a full-body shiver; nightmarishly mammalian. Then he would replace his glasses and smile at Rocky - maw stretched wide, teeth damp and displayed, making Rocky intimately understand how Earth prey must feel when encountering one of these things in the wild.