Chapter Text
You sat, curled up in the empty white room, exhausted beyond belief but unable to find the courage within yourself to sleep. Things had just gone from bad to worse. First you fall down a hole into a place filled with monsters, then you're attacked several times over, until finally you find yourself captured and locked away.
Everything hurt. Your clothes were torn, there were open wounds on your back and arms where the monsters had scratched you. Your fingers were cramped from clawing at the door in desperation. Every muscle in your body throbbed and ached from constant running for your life, and in the end, it was all for nothing. The beasts that caught you had mentioned experiments. You were there for human experimentation. All kinds of terrible images flashed through your mind, each worse than the last, and all you could do was sit in the corner and wait. You were sure you were going to die.
It felt like forever before the door opened, although you were sure it had only been an hour at most. You were on your feet in an instant, back to the corner, ready to fight with what little energy you had left. The monster that entered the room looked like a stereotypical scientist, if you ignored the skeletal appearance. He wore a clean white lab coat, and held in his hands a pen and a clipboard. For a brief moment, your eyes flickered to the door, planning on making a run for it before he locked it behind him. You weren't going anywhere.
"Hello there." he said. His voice was deep, but his tone was gentle. It would have been soothing in any other situation. He started forward, "My name is-"
"S-stay away!" you interrupt, pushing yourself harder into the wall. You tried to sound as hostile as possible, but it was hard when you could barely stand. "Don't...don't come any closer."
He paused there, and though as a skeleton his expression was fixed in a smile, the tiny orange and blue lights looking out from his sockets dimmed, like low burning candles. They also widened, the glow casting soft shadows over the rest of his face. He stood his ground, but held up a hand, palm out.
"You can relax. You're safe here. There's nothing to worry about."
You shook your head, hair falling in front of your face at the motion, though you didn't care enough to brush it out of the way. For a long moment, the two of you just stared at each other. He lowered his hand and instead wrapped his arms around the clipboard, hugging it to himself.
"They didn't tell me you were injured. Are you alright?" he asked. Then, with a sharper edge to his words, "Did my staff do this to you?"
You shook your head again. The cuts were from other monsters. Although you were pretty sure your shoulder was going to be bruised as hell later from being tossed onto the hard floor. Assuming you lived that long.
"Good." There was an awkward pause. He turned away from you and went to the door, opening it to call to someone on the other side. When he turned toward you again, his clipboard was gone, and he held a white box. He approached with slow, careful steps. "Look, it's only a first aid kit. See? I'll clean and dress your wounds for you."
He opened the box and showed you what was inside. Cloth, a bottle of clear fluid, cotton balls. He waited for a response, and when you didn't move, came closer still.
"Please..." You murmured, holding yourself tighter, wishing you could phase through the wall. He put the kit on the floor, and dabbed some of the fluid on one of the cotton balls.
"I'm not going to hurt you, I promise." He held out a thin, bony hand, "May I? "
You whimpered and cringed away, waiting for him to reach for you by force. But he didn't. He stood there, hand extended, waiting for you with an air of endless patience. You swallow, and against your better judgement, reach your own shaky hand out. His fingers were hard but they gripped yours softly enough it was hard to notice. He drew your hand toward him, extending your arm so as to give him access to the claw marks there. You flinch when the cotton ball made contact, expecting it to burn much more than it actually did.
The cuts weren't really all that deep, but they were covered in dirt and who knew what else, not to mention the dried blood that clung to your skin. It took him quite a while to clean it all away, but if it bothered him in the slightest it didn't show. When he was done, he pulled out a set of bandages and started to wrap the cloth around your arm.
"...what are you going to do to me?" You gathered up the courage to ask.
"Hmm?" His eyes flickered up to look at you. "I'm sorry, could you repeat that?"
"Um...w-what are you going to do to me?"
"For now, just this." he said, attention returning to the bandage. When he was done with that arm, he went to the other on, carefully cleaning the wounds on that one, too. "I'd love to examine you in detail, though, when you're feeling better. I've never had access to a human before. There's so much I'd like to learn from you. Maybe perform a few experiments here and there. Harmless ones, of course. Do you have other injuries?"
He looked at you again, expectant of an answer. "There's some on my back, too."
Back to your arm. "I'll get those taken care of as well. Then you can go lay down and rest, if you want. I'll have one of my assistants bring some food and water, and maybe a fresh change of clothes, too."
When he was done there, he grabbed another roll of bandages and wrapped your arm, then asked you to face the wall. A breath of pain hissed through your teeth as he peeled the remains of your shirt away to revile the gashes. They'd really done a number on you, and you could only imagine what it looked like. He let out a small, unhappy hum, and set to cleaning the wounds without a word.
"Are you going to have to use stitches?" you asked, hoping that they weren't deep enough to warrant them. He didn't answer. You pressed with a quiet, "Doctor?" but still he remained silent.
You took that to mean yes, you were going to need stitches. Your eyes close, and you stand there, waiting for him to use a needle an thread. Did monsters have painkillers that worked on humans?
It didn't come to that. He didn't sew them shut, he only covered them and said, "There we go. All done. How do you feel?"
You turn back around, but you keep your head down as you start to answer. "It's... much better n-"
His touch on the sides of your face cut you off. The tips of his fingers curled around the edges of your jaw as he coaxed your head upwards. "Look at me when you talk, please."
You met his gaze with wide eyes, and noticed for the first time that his own were focused on your mouth. Lip reading, you realized. He couldn't hear you. "Ah, um. Right. It's much better now, thank you."
"Good." He lingered against you for a few seconds more before pulling away, the place his hands had been suddenly rather cold in their absence. He folded them neatly in front of him and stepped back, "Shall we go to your room now?"
You nodded, and he put a hand on your shoulder, tugging you along behind him toward the door.
The rest of the facility was much like the empty room. White, twisting corridors littered with closed off rooms, the distinct smell of chemicals coming from several as they passed. The place was crawling with other monsters, many of them with teeth and claws like those who hurt you before. They watched you as you passed, and you recoiled, pressing into the scientist with a whimper.
"It's okay...you're okay." He cooed, his arm going around you, avoiding your bandages while still holding you closer. Very few approached. In fact, it seemed a good deal they were avoiding the two of you, walking wide circles around you like they were afraid. Those that did try to interact were waved off with a curt but polite, "I can't talk right now, please wait until later."
After what felt like an endless sea of hallways went by he stopped and opened a door into what looked like a small, but very nice guest room. There was a bed, a dresser, a lamp, and a bookcase on one end. There was a bathroom off to the side.
"Unfortunately, for your sake as well as that of the staff, you're going to be locked in here. If you need anything, knock on the door, the guard will be instructed to either provide for you, or come get me directly."
You bite the inside of your cheek, glancing away before remembering you had to look at him, "But...what if the guard...?"
"The guard won't hurt you. If he so much as lays a finger on you he'll have me to answer to."
"...alright."
He placed a hand on the top of your head, resting it there for a moment, mismatched eyes twinkling in a pleasant manner, "Don't worry. I'll make sure you're happy here."
He turned to leave, but before he could make it out of the room, you grabbed the sleeve of his lab coat. "W-wait. What's your name?"
"Dr. Wingdings Gaster. But Gaster is fine."
"Gaster...thank you, Gaster."
He nodded, "You're welcome, human. Have a good night."
And with that, you were left alone.
The following days passed by in a blur. You interacted with the guard only when you had to, ignored him when he entered your room to drop off the clothes you were promised and every meal left behind afterward. He made no effort to talk to you, either, slipping in and out like a ghost.
Every day, Gaster came by to change your bandages and ask you how you were doing. He was always nice to be around, focused on making sure you were comfortable and asking if there was anything you wanted before he left. Every now and then, you caught him talking in sign with the guard, only to shift to speaking out loud when he saw you.
"You're healing quite nicely." he commented a full week later while looking at your back. You had to agree with him, although you were somewhat disappointed when you realized several of the deeper ones were going to scar. You touch one on your arm, the texture rough under your fingertips. At least they'd closed up enough that you didn't have to keep them covered anymore.
He pulled your shirt down and waited for you to turn and face him before speaking again. "So, now that you've had some time to recuperate, I was wondering if perhaps you'd allow me to examine you?"
You hesitated. Of course, you knew this had to be coming sooner or later. That was why you were there, wasn't it?
"I assure you, it'll be quite painless." He pressed, and while his tone remained light and professional, you could see his pupils shrink and glow bright. As patient as he was, you could tell he was eager to get some research done.
You worry at your lower lip with your teeth, and finally, you nod. "Sure. Yeah."
It was the least you could do to pay him back for taking care of you, you supposed. Still, you couldn't say you weren't nervous. Friendly or no, you were worried.
The moment you agreed, he lit up, and before you knew it, your hands were held lightly in his. His fingers gave a small squeeze as he beamed at you, and despite yourself, a smile tugged at your lips at his enthusiasm.
With no further delay, tugged you out the door and down the hall.
The fact that the room he led you to was almost exactly like a doctors office didn't help. There were various monitors on the wall, tools on a nearby shelf, and of course, an examination table in the far corner. Gaster asked you to take a seat while he pulled out a clip board from one of the drawers. He wrote something down, probably the date, then he pulled out a small vial.
You sit on the table, the padding soft under you, not quite as nice as your bed but not uncomfortable. You're tense, recognizing a needle when you see one.
"We should get the scariest part out of the way first." he explained, holding out a hand for yours, again waiting for you to accept or decline.
You reach for him, flinching when he draws your arm out, the metal point glinting in the light. "How many of those are you going to take?" you asked.
"Just the one, for now. To find out what your blood's made of. It's easier if you don't look."
You shake your head, "I...can't just not look."
"You can squeeze my arm if it helps."
That you did. Your grip was a little too tight as he delicately brushed his fingers over the crook of your elbow. He put a little pressure on either side of the vein before sliding the needle in. There was a sharp twinge, but it wasn't as bad as you were imagining. You watched blood flow into the vial in spurts, keeping time with your heart.
It took less than a moment for it to fill up, and he slid the needle out, replacing it quickly with a band aid. "Thank you," he said as he rubbed at it to soothe away the lingering prickle. "You've no idea how much I appreciate this."
He set the sample on the counter and returned to your side, clip board in hand.
"Now, I'm going to need an extra set of hands for this. Don't be alarmed." He waited for you to agree. The moment you did, the glow in his eyes changed color, shifting to green. A set of transparent hands the same shade appeared, hovering in the air in front of you. You gasp, startled despite his warning.
"H-how do you do that?"
"Magic." The hands floated a little closer, "May I touch you?"
"Yeah." He cupped your face, fingers brushing over your jaw, moving steadily upward. As the apparitions worked, their real counterparts scribbled away at the paper. When he looked back up at you, you asked, "How many of those can you make?"
"As many as I need. Although I can only concentrate on so many at a time. Oh, what's this?" His fingers focused on your cheeks, "I've never seen the muscles here structured this way. These are usually positioned much further back. Can you open your mouth for me?"
You did, and he leaned in close, a soft, excited noise escaping him. "Your teeth! Are those molars?"
Two fingers slipped inside to touch the teeth near the back of your mouth. He traced over them, not just the molars but also the canines. "I always thought humans were predators, but this changes your digestive capabilities completely. You're omnivores. Hmm." He dipped his fingers under your tongue to press against the soft flesh there, "These appear to be your saliva glands. Judging by the fact that you're not eating right now, they're constantly active. And they produce quite a lot, too."
Just as he said, the more he prodded around, the more liquid gathered. You couldn't swallow with how wide your mouth was, and he showed no sign of losing interest. He took a moment to explore the roof of your mouth, commenting on the soft spot just beyond your hard pallet, and then he pulled your tongue out as far as it could go, gently pinching it between two fingers. Saliva started to drain over your lip.
"I wonder how sensitive your taste buds are...ah, wait a moment, let me just..." A second set of glowing hands appeared on the other side of the room, only to vanish in one of the cupboards. They reappeared a moment later with a plastic cup, which was then held under your chin. "Spit in here, please."
When your mouth was empty, he wiped away the drool that had gathered with one set of hands, while the other put a cover on the cup and set it next to the blood sample.
He wrote a few more notes down, silent save for the sound of pen on paper. The translucent fingers still lingered around your face, tugging your chin up, only for the second pair to reach for your neck. You let out a small gasp at having such a vulnerable area toyed with, but nothing in his touch felt threatening. He looked absolutely enthralled as he rested his hands there, feeling your pulse and the air moving in and out of your throat.
Slowly, he brushed lower, to the curves where your neck met your shoulders. He curled his fingers inward, pushing against the muscles underneath, massaging you. A small shudder went down your back, gripping at the tables padding.
"You're doing well. Very well." he said, lowering the clipboard a bit to look down at you. He was so much taller, unintentionally towering over you. You felt what must have been a third pair of hands curl around the bottom of your shirt, "Now, I'd like to take this off."
As each time before, he waited for you to agree before moving on. Your shirt was neatly folded and placed on the counter. Without a bra provided, this left you bare under his gaze. Despite knowing this was purely for scientific knowledge, you felt heat creep up into your face. You swallow hard and look away, stomach clenching as he paused to write.
Each pair of hands shifted position. One settled to rest near the waist, the other squeezed your arms in an effort to reassure, and the third wrapped around your breasts. He lightly dug his fingers in like he'd done with your shoulders, feeling the glands beneath the skin. He rubbed methodical circles from the outside inward, pinching and tugging your nipples when he reached the center.
As he touched you, you felt that warmth spread, gather in your stomach, your breath catching every time he hit a particularly sensitive area.
"This is where your mammary glands are located, right? I thought so, most mammals have them. Since you have two breasts, would it be safe to assume you'd only be nursing one to two offspring at a time?"
"Mostly, yeah." You said, flushing worse when his gaze turned upward so he could see your answer. "It's possible to have more than two kids at once, though."
"Are you alright?" He stopped, eyes dimming as they focused on your face. By then, you knew that was his version of a frown. He reached up to cup your cheeks again, "You're warmer than before. Is it a fever? Human...you need to tell me if you're feeling unwell. I can help."
"No, really, I'm fine." You felt mortified. This shouldn't be any different than a trip to the doctor, and here you were getting all worked up. You didn't even know him that well. Sure, he'd been nice, but it'd only been a week. Worse still, there was a very strong part of you that didn't want him to stop.
"If you're sick-"
"I'm not sick."
"...then what does it mean?"
The worry in his expression convinced you to tell the truth. You knew he had to see your mouth to understand you, but you couldn't look at him when you answered. You kept your gaze focused down at his chest. "It means...I liked...what you were doing..."
Once it was out, you glanced up despite your nerves. He looked bewildered. "You liked what I was...?" He said slowly, then comprehension dawned, "Oh...I see."
"I'm sorry."
"No, no, nothing to be sorry about. Do you want to stop? If it's...triggering such responses... I don't want to make you uncomfortable."
"It's okay."
"Listen, the samples you've already given me are more than I could have dreamed for. So if you're just saying that because I'm housing you, then there's no need. You don't owe me anything."
"It's fine, really, you can keep..." You paused, realizing that maybe he was the one who didn't like where this was going. "Unless you don't want to keep going?"
"I do." His voice lowered, closer to a loud whisper, "I...want to see everything...and...I'd very much like to study these responses. If you'll let me. Again, you don't owe me anything. And even if you did, sexual encounters aren't a form of payment."
"Ah-" You flush harder at how direct he was. "Um...I know, but...I..."
"Do you...want this, as well?" He sounded hesitant, but also eager, and you could see the green flames start to perk up again. You could see his interest burning, and knew that he was only holding back for your sake.
"Yes, I-I think I do."
With no further hesitation, the hands went from your cheeks to your shoulders, pushing you into your back. He ran a pair down your sides, and the third started tugging your pants down. Like your shirt, he took a moment to fold them up and put them safely to the side.
You were hyper aware of his gaze as he lingered over every inch of you, looking away only to jot a few more quick notes out. His hands drifted lower, and lower, and you clenched the soft padding you lay on.
He ran fingers through your hair and gripped your hips as he coaxed your legs apart, your warm folds already damp. You gasped as he pulled at the edges of your slit, intent on the soft, waiting flesh there. He ran a finger over you, from a point down near your entrance up near your clit. He brought that same hand up toward his face and examined your fluids, even bringing it close to breathe in your scent.
"Lubricant." He mused for a few seconds, before the hand lowered to trace the path again. A slow, easy up and down pattern, occasionally stopping to rub over your entrance. "Assuming this entire area is sensitive, you'd need to produce a lot of it to make penetration comfortable. There is...a lot of excess skin here. Does it feel good?"
You nod, chest heaving. 'Good' was an understatement. It wasn't like you'd never pleasured yourself before, but this was different. This time it was someone else's fingers trailing over you, and the difference left you breathless.
"What parts are most sensitive, though? That's the question. Where should I touch you, human?"
You reach down and direct him upwards, to your clit. He leaned forward, taking in the little bundle of nerves with another pause to write on his clipboard. He ghosted a thumb over it, and you let out a moan, teeth clenched at the rush of heat between your legs. "P-please...ah..."
"Fascinating..." He said, rolling your clit between his fingers, watching you clench. Two fingers slid into your wet hole, to feel the spasms directly. "You are so, so fascinating."
With a glance toward your face to gauge your reaction, he curled his fingers inside you, and as he did so he hit the sweet spot right there near the front. Every muscle inside you shuddered and tightened, a much lower groan pulled from your throat. Gently, he brushed your hair off your face, his thumb trailing over your mouth. Without thinking, you part your lips and run your tongue over it. He slips his thumb into your mouth without a word, running it along the inside of your cheek before touching your teeth.
His fingers curled inside you once more, firmer, actively seeking out the spot that was making your head spin. You can feel yourself tighten and flex around the apparition, as if your body was trying to pull it in deeper. His hand was covered in your fluids at that point, and you could hear your flesh squishing as he moved.
The noise struck a chord in you, and you felt that pressure building up faster than ever before. Your moans jumped in pitch, becoming a squeal just as you slipped over the edge. Your mind went blank, your back arched, giving tiny, quiet whimpers as you jerked and shuddered in waves. Somewhere, you realized you were biting down on the thumb in your mouth, and let go, not knowing if it hurt or not since it wasn't actually part of him.
You went limp as the last tremors flooded through you, your eyes glazed as they stared upward at the ceiling. Two of the three sets of hands disappeared. The fingers inside of you slipped out and, as the other hand held a fresh cup, collected as much of your fluids as it could. You whined a little, overstimulated, but he was careful enough it didn't bother you too much.
A few final notes were taken down as you were handed your clothes, the floating extremities helping you get dressed before they vanished as well. The moment you were fully clothed, the doctor put his real, physical arms around you and pulled you into a hug.
"Thank you. I know I've said it before, but thank you, so much." he said, and when he pulled away, you could see the blue and orange lights of his eyes, glowing the brightest you've ever seen them.
You blush again and glanced away, a smile of your own forming as if his was contagious. "No problem..."
"Come, let's get you back to your room. I want to get started on these samples as soon as possible."
"Of course."
His arm stayed around you as he led you back to your room, although this time you're more focused on the weight of his hold than on the monsters watching you as they walk by. The scientist thanked you again with another hug, before bidding you goodnight and rushing back to the office.
About a half hour after he left, you knocked on the door, and asked the guard if there was any way he could teach you sign language.