dark nights
night two
18+
it's the second night of your trip with your physics professors and you've had a break-through in the research. but to test their hypothesis, you need to help them recreate the exact same conditions as the first night... for science.
content warning: dark!bucky x f!student!reader x dark!steve, mature themes, dark themes, made-up science bullshit, manipulation, naive!reader, smut, dub-con, rough sex, face fucking, no protection, cream pies (yes multiple), bucky and steve are DIABOLICAL MEN.
NIGHT ONE
a/n: the long-awaited sequel to my personal favorite dark fic i've ever written (exactly two years after part one!). i missed the professors <3 also i know absolutely nothing about physics so please don't take the science talk too seriously just go with it and pretend it makes total sense. and i don't like tooting my own horn but i do think this part is hotter than the first.
divider by @strangergraphics
"This is incredible - the cells transferred the energy to the battery overnight," Bucky says with excitement in his eyes. "We've been working on this for years and this is the biggest breakthrough yet."
"That's amazing, Professor Barnes," You say as you shift your weight onto your right leg, still sore from the night before.
Steve was full of guilt this morning when he woke up still inside you, apologizing profusely when he realized what happened. You assured him that it was okay, but that maybe you should take the couch tonight. After all, it wasn't his fault - he was sleepwalking and had no idea what he was doing.
"We need definitive proof that this works," Steve says as he looks through the microscope, before lifting his head up. "We need it to happen again. And to do that... we need to recreate the exact same conditions as we had last night."
Your eyes widen.
"That's right. The cells were in this room when they transferred the energy," Bucky says, taking off his glasses. "So we need to make sure the conditions are as close to last night's as possible."
"Uh... like, the temperature, and stuff?" You ask with a squeak.
"Yes. But also the activity that took place," Bucky says gravely. "See, every one of our actions takes and creates energy, so whatever we did last night made the perfect environment for the experiment to work successfully."
"You're exactly right," Steve agrees with him. "We need to do everything the same, as close as we can."
Nervously, you clear your throat. "Um, do you mean we also have to do what happened... in bed... again?" You ask meekly.
Bucky's face drops. "Oh, God. I didn't even think about that..." He trails off before looking into your eyes. "But, yes. It'll need to happen again."
Your stomach flips.
"I can't do that to her again, Buck," Steve says, shaking his head with a look of shame on his face. "I already have enough guilt from last night. I don't think I'm capable of doing that again."
"Alright. I'll do it," Bucky says bravely. "It's the same kind of energy being exuded, so it shouldn't make too much of a difference which one of us it is."
"But... it's too much to ask of her," Steve says as he looks at you with pity. "You're our student. We shouldn't put you in that position. No matter how important this research is in creating a sustainable power source that could save the world someday."
You think about it before letting out a sigh and nodding. "No. I'll do it," You decide firmly. "It's for science. And the world. I know how much time and effort you've both put into this already and... it would be my honor to help you with the research."
Bucky smiles. "I knew you'd be one of our best students, flower," He says softly before looking at the bed. "Shall we?"
Once you're in your pyjamas, you timidly get into the bed where Bucky's already laying down. Steve stands by the makeshift lab at the other side of the room, keeping an eye on the cells. There's an alarm that he set up to let out a 'ding' whenever a substantial amount of energy is passed through the cells, and he tells you that that's the sound you're looking for.
You lay on your side facing away from Bucky, just how you were last night, your heart racing.
"Alright, whenever you're ready," Steve calls out before dimming the lights.
When you feel Bucky get closer, you suck in a sharp breath and hold it in, flinching as he wraps an arm around you. "Keep breathing, flower," He whispers into your ear. "It's just me. Remember, this is for science."
"For science," You repeat with a nod.
"Good girl," He mumbles before slipping his hand under the hem of your shirt and cupping your bare boob. You gasp as he pulls and twists your nipple, making you squirm against his hardening boner.
"Nothing yet," Steve says. "Keep going."
Bucky lowers his hand and instead slips it under your shorts, rubbing your pussy over your underwear which is already wet through. You bite your lip to hold back your moans when he pushes your panties to the side and rubs circles directly onto your throbbing clit.
"Don't hold back, flower," He utters lowly. "You're doing so well for me."
With that, he pushes two fingers inside you, making you cry out at the intrusion. Once you've broken the barrier, you can't stop moaning, though it comes out in strangled whines as you do your best to keep quiet. It would be far too embarrassing to make it obvious how good this feels. It's purely for scientific research purposes.
"Gonna need a little more," Steve says in a warning tone. "Still no activity."
Taking his fingers out of you, Bucky pulls down your shorts and brings his hard cock to your pussy. He lifts up your leg before slowly inching into you, grunting in your ear as he stretches you out.
"Fuck, so tight," He groans under his breath. "You ready for it, flower?"
"Yes," You whimper, grabbing a fistful of the sheets in anticipation.
Keeping your leg lifted, Bucky starts fucking you. He starts off slow and gentle, kissing your neck and rubbing your nipples.
"Can you give me some more?" Steve requests. "Still nothing."
Bucky growls before speeding up and fucking you harder. His cock pummels in and out of you while you cry out, utterly taken over by pleasure.
"More," Steve calls out.
Pulling and twisting on your nipples, Bucky fucks you even faster, the sound of skin on skin filling the room. You can hear how wet your pussy is with each thrust.
Steve lets out a sigh of frustration. "I need more, guys," He says with a tinge of annoyance in his tone.
"Fuck," Bucky grumbles. "Let's try something else."
With that, he grabs you by the arm and forces you onto your hands and knees. Bucky then gets behind you, pushing his cock back into you and getting much deeper at this angle. He pushes your head down onto the bed roughly and even spanks your ass, though you're sure it's all for the sake of the experiment.
"Alright, that's a little better," Steve says. "Could definitely be doing more, though."
More? You let out a squeak at the thought of it.
"Steve, maybe it needs to be you," Bucky suggests, still fucking you steadily as he speaks casually. "I think you should come over here and fuck her."
Your heart skips a beat.
"You really think so?" Steve asks him.
"We have to try," Bucky answers. "For science."
With a determined look on his face, Steve nods. "For science." He walks over to the bed while stripping down, and you watch with wide eyes, still being drilled by Bucky.
Bucky thrusts a few more times before pulling out, making you whimper at the sudden loss. He makes his way to the end of the bed where your head is, while Steve climbs up behind you.
"You're doing so well for us, flower," Bucky whispers as he kisses your cheek. "I know this is hard on you, but it's going to be so worth it when we finish this project. And you'll be getting 100% on all your work this year."
"R-really?" You ask him with wide eyes.
"Of course," Bucky replies with a smile as he moves closer to you. "You're our number-one student. You have more than earnt it, flower." His cock rubs against your cheek accidentally, but he does nothing to move it. He's too busy thinking about science so you completely understand and don't complain when his pre-cum drips out onto your face and down your neck.
"Thank you, Professor Ba- aah," You cry out as Steve plunges into you with no warning.
Steve shudders as his cock sits inside your warm pussy. "Just as tight and wet as last night," He groans, making you falter.
"But weren't you asleep?" You ask him, wondering how he could possibly remember.
Instead of answering you, Steve starts railing you. Your mind is empty as he fucks you into the mattress, his hands tightly gripping your hips and keeping you in place.
"No dings yet," Bucky says with a sigh as he glances over at the lab equipment, before he looks back down at you. "Let me try something..."
He grabs a fistful of your hair and lifts your head off the bed, before forcing his cock into your mouth. Your eyes widen as he fucks your face with no mercy.
Ding, ding.
"It's working!" Steve says, and you can hear the grin on his lips. "Keep doing whatever you're doing. Don't change a thing."
"Aye-aye, captain," Bucky groans as he forces your head further down his cock, making you gag. "I'm sorry, flower, but this is what needs to happen."
"You're being so good for us, taking our cocks like a champ," Steve adds as he slaps your ass. "Our brave girl. You are so important to this research, beautiful, so fucking important, and so smart, and... fuck, so fucking tight."
Your mind lights up with delight at his praise. Ding, ding.
"That's it, keep sucking me, it's working," Bucky says lowly. "You're gonna help us save the world, flower. We're so proud of you."
He sees the look in your eyes and he knows he's got you in the palm of his hand.
"Keep making us proud," He utters, stroking your cheek as his cock breaches your throat. "You don't wanna disappoint us, do you?"
You shake your head as best you can, making him grin.
"Good girl," He whispers, before speeding up his thrusts.
"Fuck, I'm gonna cum," Steve warns you. He makes no effort to pull out even though he isn't wearing a condom, but you let it slide. For science.
"Fill her pussy up, Steve," Bucky groans.
Your cunt flutters around Steve, making him shudder before he cums with a loud grunt, thrusting hard as he spurts into you. You moan around Bucky's cock and the sound coincides with three of the loudest 'dings' you've heard all night.
"Shit, that was incredible," Steve groans as he pulls out of you. "And it worked so well. Bucky, I think you need to cum inside her pussy, too."
"You think so?" Bucky asks as he slows down his thrusts, fucking your face a little softer.
"I do," Steve doubles down. "The alarm sounded out the loudest when I was cumming inside her; the energy created from that action must have triggered the cells."
Bucky pulls out of your mouth and cups your chin. "What do you think, flower?" He asks. "Do you think he could be right?"
It does make sense. After all, Steve's right - the alarm was loudest when he was finishing in you. And it does feel good for your professor, renowned quantum physicist, to be asking for your opinion. "I think he's right," You tell him.
"You do?" Bucky pushes, stroking your cheek. "So, you think I should cum inside your pussy, too? Right after Professor Rogers just did?"
"I do," You answer, keeping your eyes locked on his. "I really do, Professor Barnes."
"Alright. Okay, flower, if you think that's best," Bucky says innocently.
Steve moves to the side and Bucky flips you over so you're lying on your back. He then nestles himself between your spread legs and returns his cock to your pussy, which is currently oozing with Steve's cum.
With a shaky breath, Bucky uses the tip of his cock to scoop up as much of Steve's cum as he can and pushes it back into you. He repeats this a couple more times until the excess cum is back in your pussy, and then Bucky plunges his cock into you. There's a constant chorus of dings coming from the lab, proving that this is the right thing to do.
"Go for it, Buck," Steve mutters. "For science."
Bucky nods and repeats, "For science."
They both give you expectant looks and you quickly nod and echo, "For science."
Wasting no time, Bucky starts thrusting, fucking in and out of you. His head falls forward, resting in your neck as he fucks you.
"That's it, you're taking him so well," Steve says as he watches. "Just a little longer, now. You're being so good."
"I'm so close," Bucky groans into your ear, sending a shiver down your spine. "Gonna fill this tight pussy with my cum. Are you ready for it, flower?"
"Yes," You cry out, just as Steve brings his fingers to your swollen clit and starts rubbing it. The dings get louder.
With a roar, Bucky erupts, thrusting faster and harder than ever as his cum spills into you. Steve rubs your clit harder, triggering your own orgasm as you shake beneath Bucky, your eyes rolling back. Ding. Ding. Ding.
Bucky continues thrusting weakly, making you convulse and whimper. "Such a good girl for us," He whispers, lifting his head up and looking down at you as he fucks in and out of you, slow and gentle. "We are so proud of you, flower. You have been incredible tonight."
"That's right. We couldn't have done this without you," Steve says, stroking your cheek. "And by the sounds of it, it was a successful experiment, so well done. You helped to make that happen."
You nod with a smile, basking in the glory of their praise. "Thank you, Professors, for giving me this opportunity," You say, expecting Bucky to pull out but not saying anything when he remains inside you. "It's truly such an hon- honor to work with you both. I- this experience has been phenomenal."
"And you've been amazing," Bucky says with his dick sitting inside you, even though he's talking as though nothing untoward is happening at all. "I'm so glad you accepted our invitation. We knew you were going to be a stand-out on your first day. I couldn't be prouder."
"Shit. We should've documented this," Steve says as he shakes his head. "How are we going to remember exactly what we did to make the experiment successful?"
You don't think you'll ever forget.
"Damn it. We fucked up," Bucky groans, rubbing his face.
"Is there any way at all we could... somehow get the full step-by-step of what we did?" Steve wonders out loud.
They both look at you, waiting for you to suggest something.
"Um... well, if we had filmed it, that could've worked," You suggest. "But we didn't, so..."
"So what you're saying is, we're going to have to do this all over again and make sure to film it this time?" Steve asks you, making your eyes widen.
"No, that's not what I-"
"That's our only option," Bucky cuts in, giving you a grave look. "To make sure we can perfectly replicate this, we have to do it again and film it, so we know the exact conditions needed."
"No. Look at her, Bucky, we've put her through enough," Steve says as he wipes at the residue of Bucky's cum on your cheek. "We can't do this to her again."
Bucky sighs. "You're right. We'll just have to... go back to square one and figure out another way to make this work," He says, his tone heavy with dejection. "It might take years, but we have to keep trying."
"No," You cut in, unable to disappoint them after making them so proud. "We can do it again. I can take it."
"Are you sure?" Steve asks you, concern in his eyes.
"100%," You reply instantly. They had enough hope on you to bring you on this trip over all their other students, so you need to prove your worth.
"You're sure you can take it, flower?" Bucky asks softly. "You can handle Professor Rogers and I taking turns fucking you, hard, and fucking your face, and both of us cumming inside you again with no condoms? On camera?"
"Yes," You assure him, determined to be someone they're proud of. "Whatever it takes to help you with this research, I'll do it. I'll do anything for you, Professor. I'll do anything for science."
You suck in a sharp breath when you feel his cock harden inside you again.
"You're too good to us, honey," Steve says, unable to stop the smirk from pulling at his lips. "Together, we're going to do some incredible things."
"Incredible," Bucky repeats with a grin. "And all in the name of science, of course."
"Of course," Steve adds, his thumb rubbing your swollen bottom lip. "All for science."
happy october 🎃 got a few spoooooky fics planned and im gonna try my hardest to get them all out this month <3 it's my bday month and work is crazy rn but i'll do my best x
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