A/N: Mature readers only. Female self insert inspired by In Space With Markiplier
What Happens in Space
"Good morning, Captain."
You awoke to the usual robot voice in your cryopod, just like you did every morning aboard the Invincible II. You reached up and rubbed the sleep from your eyes, and smiled as the robot voice added, "Coffee en route." You were going to need that.
You pressed the release button and the door to your pod opened with a wooshing sound and a puff of steam. It was like something out of a sci-fi movie, but you were used to it by now. You had been on the Invincible II for about a month, floating around out in space. It had taken months of training back on Earth and a few weeks of being off of your home planet for you to fully get used to the idea of being on a spaceship, but now it was home to you. Maybe you didn't have your own decor or your cozy bed like you did on Earth, but you did at least have a wonderful crew for roommates.
You stepped out and were greeted by the head engineer, Mark. He had built the ship you were currently on, and because he was an expert at all things Invincible II, he was your right-hand man. You trusted him fully, and he was the only other person on the ship that had the same access to all of its programs as you.
"'Morning, captain! Coffee?" He handed you a fresh, steaming mug. Black, just the way you liked it. You had become accustomed to drinking it plain, just like you had gotten used to sleeping standing up in a pod.
"Of course. Thanks, Mark!"
You sipped your liquid caffeine as you made your way through the ship, checking in with crewmates who were already hard at work, making sure all systems were running smoothly. Burt had the reactor in good condition, Celci had cryo locked down, and Gunther had everything under control in asteroid defense. It was looking to be another smooth day in space, cruising around, searching for new planets to create life on. Knowing that things were in good hands and everything was going well allowed your mind to wander to other, less important things, like the giant crush you had on your head engineer.
You knew it was wrong, but you just couldn't help yourself. Mark was adorable! He always greeted you in the morning with your coffee, like a gentleman. He kept things very professional, only referring to you as Captain, even though you wouldn't mind if he just called you by your name. The fact that he had essentially created and helped build the ship was super impressive, and you admired how smart he was. And then, sometimes you noticed how nicely his space suit fit in certain places, or he gave a look that made you think of inappropriate things...and the next thing you knew, your dreams in your cryopod shifted to dreams of him. So now here you were, trying to be the captain of a huge ship and crew in outer space, managing everything and making sure everyone was safe, while also being distracted by things as silly as an attraction to a coworker.
"Looks like it's going to be another low key day, huh Captain?" Mark's deep voice jolted you out of your head and back to reality. "Everything's taken care of and running smoothly, so we've just gotta keep cruising until navigation finds something."
"Y-yeah, looks like it," you nodded, attempting to take a sip from your mug and realizing it was already empty.
"Is everything alright, Captain?" Mark wondered, his brows furrowing with concern.
"Yep. I'm just out of coffee is all," you smiled. "Better go get some more so I can stay alert."
"Yeah, I could use a refill too. I'll come with you," Mark decided.
As you headed back to the main control room, you wondered if today would finally be the day that you said something to him. Nothing particularly important or dangerous was going on. There was nothing to do other than check in with crewmates and monitor things. It was a perfect opportunity for you to pull Mark aside and be honest about your feelings for him. But that idea also terrified you. What if it made things weird between the two of you? Or what if you got into a relationship and broke up, and that made things weird? Mark was already awkward with Celci, who happened to be his ex. You'd hate for the Captain and Engineer dynamic that you had to be ruined.
"Want me to refill your cup?" Mark asked once you both were back in the main control room.
"Sure," you replied, handing it over so he could cater to you. Now that you had been in your head, you were anxious, so you fumbled the cup when he handed it back to you, and its contents spilled, the mug shattering on the hard, metal floor.
"Shit!" you shouted, running for a towel to clean things up.
"Sorry! You okay? You didn't get cut from the glass or anything, did you?" Mark asked, rushing to help.
"No, I'm good. Just annoyed that a perfectly good mug got broken. This was my favorite one," you sighed. Mark helped you sweep up the pieces and mop up the coffee. Then he replaced the broken mug with a new one, full of fresh coffee.
"Are you sure I can trust you with this one?" he smirked, hesitating before handing it off.
"Yes, I've got it this time," you grinned, taking it more gracefully this time and taking a sip of the piping hot liquid. "Hey, Mark? Can we talk for a second?" You weren't sure if it was the coffee giving you a boost of adrenaline and confidence, or if it was something else, but you knew you had to act on it.
"Yeah, of course, Captain!" he answered. "What's going on?"
"I...I don't want this to ruin things, or to seem completely unprofessional, but I just can't keep it bottled up inside anymore," you began nervously.
"Well, no matter what, I'm not going anywhere. We're in the middle of outer space, after all," Mark chuckled.
"That's the problem. You're stuck with me, no matter what," you reminded him.
"I like being stuck with you. So, what are you trying to tell me, exactly?"
"I'm trying to tell you that I like you."
Mark's smirk faded when he saw the fear in your eyes and realized you were serious. You couldn't believe you had really just said that to him. A million worries swam through your brain. What was he thinking? Was he confused, or disappointed, or weirded out? Was this going to make things awkward from now on?
"You like me as a head engineer? Because if so, you're one hell of a captain, too. Or, are you saying you like me as like, boyfriend material?"
"Don't get me wrong, you're a much better head engineer than I could have ever asked for. But at the moment I'm talking more about the romance end of things," you clarified. "I know I'm technically your boss, in a way, and I hope this doesn't make things weird between us. Things will stay professional. I just needed you to know."
You were feeling too cowardly to stay, so you turned and began to head back out to wander the ship and monitor the crew. But before you could, Mark grabbed your hand and pulled you back around to face him. Next thing you knew, his lips were on yours, and you gave in and kissed back.
"Things don't have to stay professional," he said. "I like you too, Captain."
Your coffee was discarded on the nearest table as you ran your fingers through Mark's dark locks of hair and kissed him, and his hands found your waist. In no time, you had him pressed up against the wall, wanting him desperately.You both broke away from each other after a moment, remembering where you were, and the fact that you weren't alone.
"We're on a big ship filled with other people," you realized.
"You and I are the only ones who are able to override all commands. If we shut and lock the door, nobody else can open it," Mark suggested.
Using your power for sex was reckless and stupid. But now that a mutual attraction had been established between you and Mark, you didn't want to waste this opportunity. If someone needed you, they could knock. If it was an emergency, they could reach you. Until then, nobody needed to know what went on between the Captain and Head Engineer.
"Computer? Shut and lock Control Room 1," you spoke. A sound played, and the door next to you closed. A clicking sound and a lock icon let you know that the door was secured.
"So, what do you want to do, Captain?" Mark asked, as if he didn't already know.
"Well, first of all, you don't have to address me as Captain," you told him, your hands on his chest, playing with the zipper of his uniform. "And I like what we had started," you added, pressing your lips back against his. Before long your hands were wandering his body and his tongue was fighting yours.
"It's getting hot in here, don't you think?" Mark asked, tugging at your uniform.
"Definitely. Why don't you help me get a little more comfortable?" you suggested. Mark smiled and unzipped your jumpsuit, just down to the waist. You pulled your arms out of the sleeves and even though you wore a white tank underneath your spacesuit, he was already eyeing you hungrily. He was quick to pull the tank top off of you and toss it onto the floor, and you were glad you had worn a cute, matching set that day. Mark's hands went straight to your breasts, and he kissed your neck as he touched you. You bit your lip in pleasure, loving the attention he was giving you.
"You should wear your uniform like this," Mark chuckled. "You're so fucking hot."
You were already getting the top of Mark's uniform off of him, and he pulled his undershirt off to reveal firm pecs and abs that you were practically drooling over. Not to mention the muscles in his arms everytime he unintentionally flexed...
"You should too," you decided, tugging his zipper down lower until you could see his v-lines and the waistband of his underwear. You'd have to tug the zipper extra hard to reveal anything else - his very obvious erection was stretching the rest of it out.
"Enjoying yourself, huh?" you noticed. Before answering, Mark reached down the front of your uniform, pulling back your underwear so he could get his fingers down inside them. He felt how wet you were as he stroked you, sending a shiver through your body.
"Seems like you are, too," he replied, plunging a couple fingers inside you easily and thrusting them in and out of you. You looked into his eyes as he pleasured you, trying to keep quiet. But he didn't finger you for long.
Even with a ship full of people, space was lonely. Sex hadn't exactly been an option when everyone there was coworkers. You had been feeling like some horny teenager going through puberty, sex on the brain all the time and desperate for physical affection. And apparently, Mark was feeling the same way, because he stopped what he was doing to get you out of the rest of your uniform and unhook your bra. You helped him out of his coveralls and boxer-briefs, and he picked you up, pushed your panties to the side and entered you, both of you letting out moans and closing your eyes in ecstasy.
"You feel so fucking good, y/n," Mark breathed. Now he was the one pressing you up against the wall of the ship, making it easier to hold you up so he could fuck you. Your legs were wrapped tightly around his waist and your fingers were in his hair.
You were surprised at how long he kept this position up, but he did tire and pull out, only to carry you over to the console in the center of the room and set you down on it. He was quick to re-enter you, now able to focus more on his movements and kissing your lips and bare skin instead of making sure to hold your body up and keep it steady against the wall.
"You're incredible," you muttered, digging your nails into his back. You had imagined this happening between you and Mark for a while now, but you never knew it would be this good. He certainly knew what he was doing and he was making you weak. But just as you were really beginning to enjoy yourself, someone pounded on the door, startling you and Mark both. He pulled out immediately and you exchanged panicked looks, hoping that your hookup wasn't ruined and you wouldn't be discovered.
"Captain? Are you in there?" a voice asked from the other side. You recognized it as Gunther.
"Yes, do you need something? Is everything okay?" Your heart raced as you responded to him.
"Everything's peachy. I just wanted to chat with you if you have a moment," Gunther called out.
"Um, I'm meeting with the Head Engineer right now. I'll be with you in a few minutes," you replied.
"Copy that. Sorry to interrupt," Gunther said. You waited for a moment, but he seemed to be gone. Mark pulled you to your feet and turned you around, bending you over the console. He entered you roughly, able to go deeper than before with this new angle. You couldn't help but let out a loud moan, and Mark put his hand over your mouth as he continued to thrust.
"Shh y/n, we don't want anyone to know what's taking place during our 'meeting'," he warned. "If you can't keep this pretty little mouth quiet, I'll have to find a way to shut you up." You nodded, and he removed his hand and gripped your hips instead. You managed to stay silent other than your quick, heavy breaths, but the rest of your body couldn't help but react to him slamming into your g-spot. You had a death grip on the console and you were unintentionally beginning to curl your toes as you felt a climax building.
"Mmm, someone's close," Mark whispered, his breath tickling your ear. "Go ahead. Cum for me, Captain."
It took everything in you not to be loud as you reached an orgasm, and your throbbing pussy made Mark weak.
"Oh, fuck, y/n. I'm cumming!"
After a few more thrusts, he pulled out and you felt warm cum dripping down your back as you caught your breath, still reeling. Mark took a moment to fully empty himself on you and recover, and then he grabbed a rag from his locker and cleaned you up, helping you stand back up.
"That was long overdue," Mark decided, stepping back into his clothes while you did the same.
"No kidding. I'm glad I decided to spill my guts," you said.
"And I'm glad I rearranged yours," Mark laughed, though he wasn't wrong.
When you unlocked the door and went back out into the hall, the crew didn't seem to be suspicious. Gunther, however, had a clue about what was really going on.
"A meeting with Mark and you're that out of breath, huh?" he asked. You thought about how you should respond, but before you could say anything, Gunther put a hand on your shoulder. "Don't worry, Cap. I won't tell a soul." He winked. "Now, I wanted to chat with you about asteroid defense..."
The rest of the day went on as usual, and nothing was said between you and Mark that was any different than normal. But that night, you both slept incredibly well, and no doubt he had amazing dreams about earlier, as did you.