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Simon was making dinner. It was a big day for them, today is the three year anniversary of him showing up in an utterly unexplainable way in Grace's ocean. He stirred the stew he was making as he reminisced, the fear of dying in a submarine full of blood and then the fear of drowning it a suddenly clear water, then, and probably the worst of all was how afraid he was of Grace when he finally pulled him from the water. Oh, how times have changed.
Grace was working late, he was with Adrian in the lab. They were still making up ways to grow food for them, to make their diet more diverse. It was odd, Simon never had 90% of the type of food he was having now, and he still survived for 28 years. The fact that he turned out to be kind of a great cook was nonsensical. It must've been the universe's plan, because Grace was terrible at eating. He was also terrible at sleeping.
They were late. Rocky was already at home, tinkering with something in his workshop. The biodome went through a lot of changes since they became mates, Rocky and Adrian practically moved in with them. They had a separate space in the house, similar to Rocky's tunnels on the Hail Mary. There was an airlock as well at the back of the house, where they could get into the xenonite suits and be closer to them.
He was in the middle of humming a song (which Rocky adored) when the front door opened. As Simon turned around, he saw Grace kicking his shoes off and putting his coat on the hanger. He went to the cupboard to get the plates. Before he could, though, he felt Grace's presence right behind him and he reached over him to grab what Simon was picking up.
"Hey there." Grace greeted him and put the plates down. Simon turned around in place, then leaned on the kitchend counter.
"You know what time is it?"
"Uuuuhhh…"
He looked tired. Glasses hanging on his chin, messy hair looked like he just ran his hand through it. Simon smiled.
"Food is ready."
They sat down, Simon set the table for them. Rocky and Adrian will join them soon, after they finished their dinner. They didn't want to watch them eat if they can help it. Grace ate like he was being starved, finishing up his meal in a few minutes.
"Adrian told me they prepared something for tonight."
"Oh?"
"They didn't say more. Wanted to tease me, I guess."
By the time the two Eridians decided to join them, they were already sitting on the couch, talking in low voices. Grace told Simon about his day, he went to teach in the morning, but afterwards he was with Adrian and the biodome team the whole time. In turn, Simon told him about what he did today in the garden, how each plant was doing. Grace was delighted to hear about it, since it would be easier to finally add plants to their diet than to rely on synthetized basic nutrients.
He also praised Simon how good he was with plants. Simon got incredibly red.
They heard the airlock, and then the skittering of Rocky.
"Grace! Simon!" The musical notes made Simon smile. He was fairly fluent by now, he picked up Eridian rather quickly. Grace was adorably jealous.
"Hi Rock, how are -oof!"
Rocky jumped on the couch, landing directly on top of Grace. The scientist laughed and hugged him, then pressed a wet kiss on his xenonite suit. Rocky pretended to be disgusted, but then he moved over to Simon and demanded the same.
"Hello, my loves." Adrian settled on the ground in front of Simon, legs tucked beneath them. Their turqoise carapace was beautiful in the low light, almost shimmering. Simon rested a hand on them. Rocky moved back towards Grace, essentially displacing him from the couch, so they got into a scuffle trying to settle who gets to sit next to Simon.
Simon and Adrian shared a look. As much as Adrian could. But Simon knew.
"How was your dinner?" Adrian asked with a cheery voice. They must've been just as tired as Grace, but doing their best to still celebrate. Simon appreciated it, but he didn't exactly want anything big either. They could just relax, talk, then go to sleep while he watches over them.
"It was great! Super delicious, Simon's getting better and better." Grace answered before he could.
"Well, our choices are limited to your cloned muscle and a few plants. Had to get creative."
"We could clone your muscle."
"No, thank you."
Grace laughed. His laughter was the best thing Simon has ever heard.
Then, the mood suddenly shifted as Grace leaned over, Rocky now completely stretched out between them, legs on their laps. He touched Simon's face, fingertips grazing the scar he had from his ear almost to his nose.
"I can still taste you, you know."
Simon couldn't help but smile, it was so cheesy. He was kissed, then, and his ears were ringing so much from excitement that he barely heard Rocky's comment on how lame that line was. And despite the Eridian's words, he could soon hear a gasp from Grace, and when they separated, he felt Rocky shifting in his lap to press on his crotch.
His legs were pushed apart. Adrian was keeping him down and still, claws on his thighs. He could feel the faint heat of their body.
"Grace said, ah-" One of Rocky's legs was digging directly into his dick now. "Grace said you had a surprise for tonight?"
"Mmhm." Adrian was fully in between his spread legs, and when they hooked their arms beneath his knees to slide him down further on the couch, Simon felt his face grow hot. So it was that kind of surprise.
"Is it time?"
"Yes."
Grace explained to Simon that Eridians have cycles, but they are way longer than for women on Earth and very different. Which was not a reference Simon got anyway. But basically, Eridians have something called heat and rut cycles, during which they can reproduce. And it works best when they are aligned between mates.
So, that must mean Rocky was in heat and Adrian was in rut right now.
Which meant they were going to fuck him with their ovipositors.
Simon's cock twitched in interest, and he felt Grace move on his side, standing up to go behind the couch somewhere. Rocky immediately took his place, placing his arms on both sides of Simon, pushing himself over his body. As soon as he did, Simon felt Grace's hands on his own, grabbing his wrists to pull his arms over his head, and he leaned over to get a good look at Rocky, Adrian and Simon.
A kiss was pressed into his hair.
"I see Rocky is eager. Look how he trembles over you."
Simon looked down. Rocky was in his lap, not with his full weight, but enough that Simon felt the pressure on his middle. His body was pressed up against Simon's torso, no doubt listening to his quickening heartbeat. He was shaking a bit from anticipation. Simon liked the pressure. Grace didn't, he hated being held down, but Simon welcomed it. It made his insides fuzzy with safety and trust in his partners.
"Grace, Grace."
"I'm here, bud."
Simon tilted his head back, wordlessly asking Grace for a kiss. Kissing him upside down felt odd, but he liked the weirdness of it. When he smiled into the kiss, he could feel Grace doing the same. A hand crept along his chest and judging from what he felt happening over him, Rocky held out a claw for Grace to hold.
In the meantime Adrian moved one of Simon's leg over Rocky's, and he felt something prod at his entrance. Adrian was always so methodical preparing him, using the silicone dildos they made a while back. They were different sizes, the thinnest is just about as thick as a finger. Since Grace didn't participate in the act itself, they had to figure something out, so they were able to penetrate Simon like he wanted.
He let out a sigh when Adrian finally inserted the lubed up rod. Rocky was already leaking in his suit, Simon could feel a patch of even hotter area of him. Tracing his fingers on the suit and eventually arriving to Rocky's seam, he pushed. The elastic part of the xenonite suit gave way. Rocky let out high, excited sounds as Simon ran his fingers along the ridges, and he could already feel something emerge from within him.
Grace's presence behind him was grounding, and he needed it as Adrian began fucking him with the toy, his dick was fully hard now. It kept touching Rocky's body, catching on the sharper parts of the suit.
"You're doing so good, Simon." Grace kissed him again, this time from the side. Simon never even noticed he moved over, back to his previous place on the couch. His head was turned towards him by Grace's hand on his cheek, and they just kissed and kissed, enjoying the closeness, time seemed to stop. Grace always loved kissing and cuddling, he loved being in Simon's space. He often mentioned how he would've died of touch deprivation already if Simon didn't come along. It was obviously not possible to die just from that, but his first comment about it made Rocky freak out enough to engineer the xenonite suits they are using now.
"Yes, Simon and Rocky are precious. Taking me so well." Adrian's praise went straight to his cock, and Rocky ground down on him, making him moan into Grace's kiss. The thinner toy was changed to a slightly wider one, about as wide as two of Grace's fingers. Adrian eased it into him, and the fullness took his breath away for a moment.
They continued to open him up as Rocky stimulated his cock, grinding the tip of his ovipositor against him through the suit. Simon had some idea about how Rocky changed the suits so their ovipositors can extend, it went into a sort of sleeve. Obviously he wouldn't be able to take their eggs (no matter how intrigued he was by that), so the eggs will be stuck inside until they can go back to their own atmosphere and mate without the suits.
"Adrian…" Simon whined, feeling his orgasm creeping up on him now. He's going to spill any second if they don't stop. His muscles tensed, much to Rocky's delight who was now moving on him fast, stimulating him with his seam, the ridges and his tip digging into his crotch at all the right places.
"Soon, my love."
The promise did it for him, hearing the musical notes for love. The warmth. Grace's touch. He was coming, hips pushed up against Rocky, who was making noises constantly now. Closing his eyes he was riding the waves of his climax, trembling, his leg up on Rocky's tensing, toes curling. Adrian continued to drive the toy in and out until they could tell Simon was overwhelmed by the constant pressure on his prostate.
"Good, Simon, you did really good." Grace was nuzzling the side of his head, inhaling his scent.
Both Rocky and Adrian ceased their movements at the first sign of overwhelm. Rocky stayed above him, the constant pressure and warm lulled him into a comfortable haze. Adrian moved from his legs, and Simon saw Grace glance over at them. He couldn't quite see from his position, but he figured he'll know soon enough.
Grace brought him some water. Since Rocky was not going to move, Grace had to help Simon drink, the angle was awkward. They laughed as he spilled some on his chin.
"Are you ready, Simon?" He heard Adrian ask. Grace pressed a wet kiss on his cheek before he moved a bit to see Adrian.
"Woah! Okay, so ovipositor is the accurate word."
Simon was curious. But he made piece with not seeing it for now. Rocky also seemed to come alive on top of him, he reached under himself to tug on his own genital.
"Told you. It's like human sex toy." Rocky added, unhelpfully. Simon had no idea what that meant.
"You know ovipositors exist in nature, not just like the weird amalgamation of a penis and an tube to release eggs. They are pretty fascinating, actually."
Something Simon had to look up later. Sounded intriguing… maybe Rocky can make something like that for him. The thought made him red all over. He got even more hot when he felt Adrian's hands on his legs again, spreading his cheeks, now hanging off of the couch completely. They stood up as much as they needed to to line themselves up, holding Simon's ass.
"This is the best day of my fucking life." Simon whispered and sighed as he felt the tip of Adrian's ovipositor breaching him. Rocky hiked his leg up a bit more, pretty much pressing it down onto his torso now, bending him in half. His other leg was raised up by Adrian, they used it as leverage as they fucked their appendage deeper into him.
It was long, and the shape weirder than any cock he had up his ass, in another life. The ovipositor got increasingly thicker, so much so that his hole was working overtime trying to fit Adrian completely. At some point, they just stopped pushing, and Simon guessed the width at that point was similar to a wrist.
He was so, so full. Breath caught in his throat, he waited to get used to it, the weight in him. Rocky's own ovipositor was also out already, his seemed shorter, but it didn't matter as long as he kept touching Simon's dick with it. He smeared Simon's cum over themselves, coaxing his member to fill again.
Adrian finally started to move, and Simon immediately started to moan, not able to keep staying quiet anymore. He distantly noted that Grace was staring at where Simon and Adrian was joined, and for a split second Simon felt like he couldn't love him any more than this.
"Hmm, see how he takes me, Grace. What a good little human you found." Adrian's notes were strained, despite their casual way of speaking. It was affecting them as much as it affected Simon. His cock twitched, and Rocky redoubled his efforts with a few enthusiastic trills and pulses.
Grace didn't say a word, but he did slump over to Simon's side again. One of Rocky's claw found the scientist's hand again, and they kept holding hands as Rocky jerked them off. Adrian's pace quickened, and Simon could feel the eggs, now. They were pushing through the tunnel of the ovipositor, it felt like a flared base at first, but then Adrian pushed it in and out. Then, right after it, the next one, and the next, until he could feel about five eggs, staying there in the ovipositor, catching on his rim every time Adrian pushed in.
Soon enough Simon felt so loose he could take the enlarged ovipositor with ease, the constant touch on his prostate was almost too much. He felt another orgasm coming, and he grasped for Grace, squeezing his arm still holding Rocky. The Eridian also picked up the pace of their members, and when Simon started gasping for air, climax right there, he switched to holding his cock, digging into his slit with another one of his arms.
"Fuck, fuck, Rock, oh my g…!"
He let out a loud groan as he came, and Grace was at his face again, turning his head and kissing him passionately, pushing into his space.
Adrian continued to fuck him through it until Simon started shaking from overstimulation. Then, the Eridian pulled out, and Rocky got off of him as well, taking Adrian's place between his legs. Simon looked down, and when he saw what Rocky wanted, he nodded.
Rocky pushed into him hard and fast, his ovipositor not quite doing as much as Adrian's, but it was still enough for Simon to whimper into Grace's neck. It was too much, but he wanted to be good for them, he wanted to please Rocky too, he wanted to give his body to them to use as they pleased.
Once Rocky was as high-strung as he could be, him and Adrian quickly scurried away. Simon missed their warmth, but he understood they had to go back to their own atmosphere to finish mating. Grace held him, grabbing his legs and circling his arm around his torso, he laid him down on the couch in a more comfortable position. He cleaned him up, tugged his underwear on, then took his place on top of him, head resting on his chest.
They listened to Simon's heartbeat, it normalized after a while. He soon heard Grace's breathing even out, and he was drifting in and out of sleep as well until he heard the airlock again.
Adrian and Rocky appeared it the living room once more, the three of them moved Grace to the bedroom, and they all piled on the bed.
Simon's blinking soon got slower again, and he reached for Adrian. They held their hand gently, squeezing once.
"Sleep, I'll watch."