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Captive

Summary:

After Frisk left the Underground, all of the Human Souls disappeared with them. With Asgore and Toriel dead, Undyne became queen.

Now, a Ninth Human has fallen, and Monsters don't want to wait. They want another six Souls, and soon.

[Or, the horrible fic where Sans is essentially forced to breed with a human.]

Notes:

I know that this story is awful, and I don't care.

Please be over the age of 18 when reading this.

Also, if anyone has any more ideas/suggestions for guilty sin... I'm trying to learn to write porn by essentially just writing the worst porn possible, thanks.

Chapter 1: Prologue

Chapter Text

After they had locked you in here, it was as if you'd ceased being a person.

 

They never spoke to you anymore. The room they had locked you in was nice enough, but nobody spoke more than three words to you anymore and the loneliness was driving you insane.

 

You should have known it was a bad sign. Only the lizard monster ever talked to you and all she ever gave was directions. “S-sit h-here”, “drink t-th-this”. You should have known it was a bad sign that everyone you came into contact with in this room refused to look at you, not a single person was friendly and so of them had even looked....

 

Guilty. Some had looked guilty. You should have known this was a bad sign, but they hadn't killed you yet. And what else could they have been planning?

 

They had planned worse. You hadn't known it at the time, but the monsters had planned so much worse.

 

 

 

You had been hurt, at first, when you fell down Mount Ebott. You had broken some bones and thought you would die there. When the monsters came, you had been afraid. But what else was there to do but to follow them to the empty Ruins?

 

The monsters healed you. They had been so kind to you, at first, inside the Ruins. It wasn't until you had left them that they had captured you and locked you in here. From what you had been told, the Queen had lived in the Ruins before a human killed her. You thought maybe that was part of the reason why you were now locked in here: maybe they wanted to make sure you were safe?

 

The days passed, but no one questioned you. You tried to make yourself seem as harmless as possible. Kindness, after all, was a gift you treasured. You didn't want to hurt anybody, and in turn you hoped that no one hurt you.

 

And nobody did hurt you. They hadn't captured you for that.

 

 

 

You should have known something was horribly wrong when the lizard monster started examining you.

 

She often took your temperature. Measurements. Drew blood samples a couple of times. Everything seemed to point to being a doctor, of some sorts, so when she asked you to...

 

“S-strip...,” she sounded extremely uncomfortable saying it, looking away from you more pointedly than usual. “Um... p-please.”

 

You felt a rush of fear and adrenaline at the words but you didn't seem to have a choice in the matter. She was one of the few who ever came in here and fed you. And she was probably a physician, or something like it... Or so you hoped.

 

You stripped.

 

And tried not to think of how humiliating it was to be completely exposed to a stranger like this.

 

The lizard monster got a little chatty, then, more than she had ever been around you. It was clear to you that she was as nervous as uncomfortable as you were, with the way she spoke. And maybe she was trying to ease the tension as she spoke, but you listened...

 

She started by touching your shoulders through the thick layer of latex gloves. “I-I n-need to check... H-have to m-make sure there's a-an actual s-skeleton in y-you...”

 

Um. What?

 

You didn't bother to try to talk to her, despite your throat feeling almost numb from disuse. Every single time you tried to talk to these people, you were just ignored anyway. So, instead, you listened.

 

You stayed silent as the monster doctor took more measurements, checked your heartbeat, standard stuff...

 

But then—

 

“Y-You're f-f-female, aren't y-you? Um. I c-can see th-that... I-I m-mean!!! N-Not t-that I was... Not-that-I-was-looking-or-anything!!! Oh gosh... S-Sorry. I-I'm the Royal S-Scientist, I'm... S-Supposed to ch-check. J-Just... I-don't-need-to-check-anymore-so-you-can-put-your-clothes-on!”

You started putting on your clothes as fast as you could, and you almost missed it. “H-how... H-How old are y-you, a-anyway? T-teens? T-twenties?” You didn't answer. You didn't have to. The monster just kept talking, rambling almost. “R-Reproductive age, a-at l-least... Th-That's all w-we n-need, r-really... Oh gosh...”—she muttered—“I c-can't b-believe we're d-doing th-this...”

Your blood ran cold.

 

Doing what?

 

Your voice was hoarse when you spoke, and frightened. You almost didn't recognize yourself. “W-What are you going to do with me?”

 

And that seemed to have broken something. You'd spoken words. The lizard monster's mask was back on. “F-five thirty. F-food in half an h-hour.”

 

You should have known something was horribly wrong.

 

You started to suspect it.

 

 

 

Several days or weeks after your physical, you heard the racket.

 

Screaming. Angry yells. And it was coming closer and closer, the noise of shouting and begging.

 

“S-Sans! You c-can't go b-back there!”

 

You recognized the voice of the lizard monster, but there was a second, furious voice so enraged that it sent a chill down your spine.

 

“like hell i can't, alphys!” the male voice was low, almost a growl. “you were about to send my brother!”

“U-Undyne d-decided... She's the q-queen...”

“i don't care if undyne turns out to be god of underground, i won't let you do that to papyrus. i'll kill the human myself if i have to.”

“You c-can't!!! I-I'll c-call th-the guards. Undyne d-decided. That's t-too much power for a-anyone...”

 

“so you decide to try to breed the human, 'til you get seven?”—your heart dropped in horror, bile rising in your throat—“do you know how sick that is, and to choose papyrus—”

“H-Humans m-may have evolved fr-from s-skeletons! It's-s our only ch-chance... W-We c-can't wait m-much l-longer, e-everyone's l-loosing h-hope...”

you're not doing this to papyrus!

P-Please, Sans... I c-can't let you k-kill her. T-Think of your b-brother... W-What would h-he s-say if you w-went b-behind Undyne a-and ab-bsorbed the s-soul?”

 

Silence. Terrifying silence. You strained your ears from your enclosure, your trap.

 

They were planning to b r e e d you. With... Monsters? You wanted to throw up. These people were sick, you had to run...

 

The small, up until now moderately comfortable bed in your small room now felt ominous.

 

You were so close to crying, already hyperventilating when you heard the male voice speak with now considerably less volume.

 

“if you need more humans, you can try. but not papyrus.

 

“tell undyne i'll do it myself.”