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Lime wasn't one to get involved with the other crewmates. Not a one trusted them, and the feeling was pretty mutual. Lime hadn't ever been close with anyone at all really, and as such intimacy wasn't a strong suit. They avoided it at all costs.
Crawling through the vents on their way from having lunch in the cafeteria to check on the reactor, they stopped partway. A passing conversation could be heard from above. They would normally ignore such things. None of their business. However, it sounded like an argument that had gotten out of hand.
“You're always like this!” Purple's voice rang out angrily. “Shirking your tasks, and for what?! To get buddy-buddy with the other crewmates?! To play video games like this?!”
Must be the navigation room. Lime moves to continue on but then…
“P-Purps, I’m- I'm kinda uh, busy right now.” Red sounded a lot more subdued than usual. It made Lime stop in their tracks.
“Don't start with me?!” Purple yells. “What are you playing anyway? Some kind of matching game with an anime character in the corner?! Look at me when I'm talking to you!!”
Lime dared not peek out of the vent. They would not want to interrupt what sounded like an important conversation. At the same time, they wondered what was going on truly.
“Ahaha- Don't worry about it Purps. I'll uh- I'll turn the game off.” Red sounded audibly worried. “No biggie!”
“Stop with the nickname! Look at me!” Stomping footsteps could be heard.
Suddenly Red sounded panicked. “Purple wait-!”
The sound of the captain’s chair swinging around. Then silence. Lime listened with bated breath.
“…You-” Purple sputtered in disbelief. “What?”
“I can explain-”
Purple suddenly kept their voice down, despite still sounding furious. “You were doing this with the door unlocked?!”
Lime wondered what kind of game would require a locked door.
Red let out a shaky sigh. No answer.
Stomping again, this time away from the chair towards the room’s exit.
“Wait- Purps-!”
The sound of the door locking. Then a pause.
“Did you really think I was gonna let you off the hook and just leave you here?” Purple’s voice was low in a new way. Lime felt confused. What the hell was happening up there? “Like usual, I have to fix your screw-ups.”
Stomping back to the chair. Another pause.
“P-Purps…” Red whined.
SLAM
Lime jolted at the sudden noise. It sounded like Purple had thrown Red from the chair against something. Probably the navigation console?
Red whimpered pathetically. From the sound of things it didn't seem like they moved from where they were thrown.
“I said stop it with the nickname.” Purple was stern and commanding with their tone. “You're lucky I'm even staying here. Or would you rather I left you here like this? I can let you lock the door on my way out.”
“No! No no no please Purp- Purple..” Red begged. “I…”
“You what? Big hot shot captain doesn't know how to communicate with their own crewmate?”
“Please,” Red answered with a gasp. “Don't make me say it.”
“Oh I'll make you say it. If you don't, I'll have to leave you to it.”
In a panicked voice Red responded,“No! I'll say it!”
“You’ll say what?” There was a chuckle in Purple’s tone.
“Stay. Please.”
“Stay and do what, Red?”
A grumble from Red. Then, “T-touch me." Please, Purple. I need you.”
Oh my God.
A heavy flush instantly covered Lime’s face. The two don't know they're in the vent.
“You don't deserve it,” Purple practically growled. “You're lucky I'm already here. What would you have done if I hadn't walked in on you? Tell me, captain.”
“Please,” Red begged once more, “Please, I need you to touch me…”
A pause again. Purple muttered something inaudible.
Then Red moaned and Lime could only assume that Purple was finally touching them.
Purple spoke, “Funny color choice for that character there. Care to explain that?”
It was like a tragedy Lime couldn’t turn away from. They were already invested.
Red whined again.
“You were thinking about me, weren't you? Answer me.”
“I'm a-always thinking- nng- about you,” Red finally admitted.
“You certainly don't act like it,” Purple retaliated. “Whenever I hear your voice it's so condescending and self-centered. Like you have to make being in charge your whole personality.”
Red didn't verbally respond. They sure did make some needy sounds though.
It was at this moment Lime had a horrified realization. Despite not being able to see what actually was going on up there, just hearing it and picturing what could be happening was majorly turning them on. It was too late to leave, if either of them up there accidentally heard Lime in the vent it would be disastrous. At this point they had no choice but to stay. On the other hand, Lime’s hard-on was straining at their overalls. It would not be ignored.
“You're pathetic, Red.”
Red made a noise that told Lime they probably got some exhilaration from that insult.
Still kneeling in the vent, Lime began to unbutton their overalls. They had to go slowly, not wanting to accidentally bang a limb against the metal walls and draw attention to themself. The engineer carefully pulled their clothing down just as far as was needed to free their erection. They felt almost on autopilot, which was ironic considering what room they were hidden under.
“You’re a stupid, incompetent, corporate boot-licking moron,” Purple spat. “And,” their voice went low again like before, “you're enjoying this, aren't you?”
“M-mmhm..”
Lime propped themself up with their non-dominant hand and hesitantly began to touch themself. Well, that was the original plan anyway. They quickly ended up slapping their unused hand into their face to try to keep quiet, having to rest their head on the floor of the vent. Am I really that pent up? they wondered.
Purple let out a grunt and Red moaned louder. Lime concluded that the two were straight up having sex at this point. The engineer abashedly rutted into their own hand.
“Haah- What would you have done if anyone else walked in on you like th-this?” Yeah, Purple was definitely fucking Red by now.
Red simply let a few broken moans free.
“You think a-anyone else would’ve helped you out? Even if you wanted them to?” Purple released a gasping laugh.
Red didn’t answer, but Purple acted like they did.
“Yeah. I bet Green would in a heartbeat.”
Oh my Godddd. The engineer stifled a noise.
“I didn’t-” Red began before being cut off by another slamming noise that they moan at.
“I can see it,” Purple snarled, “especially with how much they- hhf- look up to you. They'd probably do whatever you say.”
Lime didn't disagree with the statement. Whenever the captain and the intern talked, Green had this admiring twinkle in their visor.
“Gh- nn…” Red had half a mind to not answer Purple. That didn't mean they could keep completely quiet though.
“I bet you’d still be-” Purple’s turn to moan. “-be sitting in that chair. Probably wouldn't take much convincing to get them- nhh- on their knees.”
Oh great, now Lime had two scenarios to imagine.
“You'd like that,” the security guard huffed, “wouldn't you? Always wanting someone to stroke your ego one way or another.”
Red’s moaning was getting louder and more frequent. Purple’s movements must have been getting rougher too, the navigation console itself was kind of creaking under the pressure.
“That intern would do anything for your approval. But you already nn-know that.” Purple chuckled. “Maybe you've already had that idea.”
Lime was really needing to restrain themself by that point. They were pretty close, and judging by the loudness of the sounds Red was making they were probably getting close too.
It didn't help they then heard the click of a backpack being removed and a thud as it was thrown aside.
“Purpsple-!” Red cried out, slurring their name with the nickname. Without their pack, the captain’s noises had practically doubled in volume and frequency. “Ahm- I'm-!”
Purple huffed. It sounded like they were trying to hold back some noises of their own. “Ugh- R-Red, you-” the security guard gasped out.
Red was practically bawling as they screamed Purple’s name over and over. In mere moments it was too much for them, and with one final wail they must have come.
But Purple didn't slow down just yet.
“‘Course you came first-t,” Purple taunted. You're gonna have to wai- hng- wait a bit longer till I'm done with you.”
Red whimpered from the overstimulation as Lime did their best not to make any sounds, coming hard and fast into their own hand. The engineer was admittedly a bit dizzy from all of that and tried to ride out their orgasm as quickly as possible.
Lucky for them both, Purple didn't need much longer. “Fff- fuck you, Redsie!” they cussed, then a hollering wail as they were pushed over the edge.
Red sobbed and whimpered softly as the creaking console noises slowed and eventually stopped, the sound being replaced by only the the heavy breathing of the two exhausted crewmates. By then Lime was spent too, doing their best to not breathe as loudly as the room’s occupants. Lime knew there was now a lot less leeway for them to be accidentally be heard, so they kind of just knelt there exhausted with their head on the vent's floor.
Red could be heard blubbering out repeated “thank you”s between gasps.
Purple simply scoffed as they tried to catch their own breath. There were a few other shuffling/moving noises before Purple finally told Red, “Clean this up. You've got work to do.”
“Mmhm mmhm,” Red quietly agreed. More movement followed.
Lime decided it was time to go, taking the opportunity to carefully and quietly redress themself. When they could confirm neither of the other two had heard that they slowly scuttled away. I won't tell. Everyone's got their own personal secrets. Lime nodded to themself. I certainly have one more now too.