Skeleton Reader x Possesive Nightmare [pt one]

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Request: Okay...

I want a sweet smart strong skeleton reader x Possesive Nightmare sans.If possible could you make the reader original undertale bros sister like she is older than papyrus but younger than sans. She and Nightmare met at the Tree of Feelings (they were bffs btw) before he ate the apple but she had to leave due to caring for Papyrus. Then later she'll get kidnapped during a battle










[I CAN"T FIX THIS DAMN GREY THINGY IM SORRY LIAHBLK HBLJ GBHRG }



He always wondered what happened to the girl he used to know. [Y/n]. That girl, damn she was the best friend he could have ever hoped for....you know, until she left him.She was another monster, skeleton as well, so a very unique monster, since nobody knows where the hell skeletons come from..Anyways, he'd be lying if he said he didn't miss her vibrant [e/c] pinpricks. Or her [Hair color] Eyelashes she'd draw on, since she hated being mistaken as a boy by idiots.Whenever someone would say that they'd hate nightmares, or him, she'd be the very first to calmly walk up to said monster and either punch them in the face, or if she was feeling nice, she'd lecture them for OFFICALLY an hour.She had been there for him, whenever he was feeling depressed about who h was, or what he represented. And she'd say, "Hey, nightmares are good too, you goof. "

~flashback~

A small skeleton was next to a tree, crying as all these hateful thoughts and comments filled his mind. Why did HE have to be NIghtmare? Why did everybody hate him? God, he hated it


"Oi, nighty~, why're you crying?" A sweet voice calls out to him making him lift his skull. 

In front of him was Y/n. His best Friend since, well who cares. 

Quickly wiping his tears from his cheekbones, he turned his head away from her. 

He would NOT let her see him like this

He refused.


Too bad she didn't give a shit.

"Its okay to cry, you know. We've known each other for a long time. " The skele-girl states with a pout. "We're best friends, that means when I cry, you give me your shoulder to lean on. And when You cry, I do the same for you.'' 


Of course he knew that but -

A rustle alerted him that she had sat next to him and  a yelp escaped him feeeling a poke in his ribs. 

"Wh-" A flick on the forehead. "Listen, i dunno what those idiots have been saying this time around, but I NEED you to listen to me, okay?" Y/n had a stern yet still motherly tone in her voice that meant she was serious.


With a gulp NIghtmare nods and gives her his full attention, also letting her see how miserable he truly looked. And She felt her soul break a little bit. 

A sigh escapes her teeth as she lifted her left hand to cup his cheek. Using her thumb to wipe away remainging tears. "You. Are not. A. Mistake. You are loved, alright? Nightmares are good sometimes."


This caught his attention as he just stared at her. "H-How can it possibly be good??? "  Y/n closed her sockets before answering. "Although sometimes nightmares can cause tramatic things, its also a reminder for us too. Some monsters, Humans, whatever, a nightmare can help them figure out whats truly important to them. It can help them be wary of something that could potentionally save their lives at some point or another." 


He never knew you thought that way - "I could go on and on. BUt my point is, Nightmares are like reality checks. " Your eyelights had dimmed a bit. "So please, please do your best to ignore them. I promise I'll always be here for you Nighty." 


That was they day he yeeted his pride and cried in your awaiting embrace. 

It was also the day that he started to gain a seed of love for you. Not Level Of ViolEnce. But actual love love.


too bad he didn't realize it sooner...



-timeskip in flashback lmao-


Nightmare was panting despite not having any lungs, he'd spent the whole day looking for you. He asked Dream, who didn't know. He asked the blobs of inks that would occasionally form from the apples, he asked any and everyone if they had seen you. 


None of them had.


He remmbred you once  saying how you were from another au. the "Orginal" and everyone called it, Undertale. 


'wait ' he thought 'i - she has a phone that alphys made. dammit im so dumb " he sighs in relief before quickly calling you up, hoping you'd answer.


But you didn't.


flashabck over~


After that things only got worse for him. One thing led to another and he ate an apple. 

And now he was this....this....THING


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He forgotten about you for a while, until now. 

One of his "companions" , informed him that they were approaching Undertale.

And a grimace appeared on his inky skull.


Little did he know that his decsionon to visit the au, would change e v e r  y t h i n g.




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