Undertale Sans x !Dying reader!

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This was it. It was your time. The darkness spread around as your power started to seep all around you. You have never needed to use this much power in your life, but this was one occasion that was necessary. The devil was back. Not the kind little kid you knew, oh no. It was the blood thirsty monster that wanted to kill everything. Yes, the underground is full of monsters but they are kind and soft-hearted. This one, is pure evil. It had already killed Toriel, Pap, Alphys, Undyne, and all the rest of  Undertale. Except for you, Sans, and the King that is all that remained. You were like Sans in a way, and you could go through time lines. Well not exactly  through, but you could remember everything that's ever happened. This monster was called Chara, and this is what you called the genocide route. The other route that could happen, and has never happened, is called the pacifist route. Every child that has ever tried to free the monsters has died. The king, known as Asgore, was not a fan of children for unknown reasons, and began to kill the children to break the barrier. Now you see why. You wouldn't let this devil through. You refused. I will die first. I will fight until the last of my power. Where the hell is that devil anyways? You currently stood in the hallway before the Judgment Hall, where Sans currently was. You knew he always went there after Pap, his brother, died. The skeleton brother was your best friend, so every time his brother, Papyrus, died right before your eyes, it brought more anger and sadness to your soul. Your soul was black. It was an unknown color among all the others, like red, orange, or purple, but it was your soul nonetheless.  There was nothing that could stop you, and you were ready. The last thing you needed was Sans to die. Especially with all the trouble this little bastard/bitch (it's a they)  has caused. You were ready to fight, even if your magical energy was running out. Yes, that's right. Running out. Ever since the boarder was between the human and monster realms, your magical energy has been slowly depleting your life force. So in non-technical terms, you're dying. Slowly, painfully, dying. The more magic you use, the more your life force depletes even more. This is why you needed to stop them now. Little pattering footsteps could be heard as you shut your eyes. You sighed, unwillingly, and tilted your head to look at the ceiling.

"So kid. Come back to kill again I see. I wish you were different, but you turned out just like all the humans up above ground. Get ready, 'cause you're going to die tonight, and there is no resetting. Not with me, at least. When you're dead, you die forever. No more mercy, no more fighting, and no more resetting. I'm done with people like you. I hope you like the taste of death. Goodnight. Forever." You say with venom in your voice as you sharply turned around.

You set off your first attack, and it was quickly dodged. Scowling, you growled and released yet another. Their soul danced around your attacks, and they smirked at you as you glared at them. Biting your lip, you could feel yourself slowly dying. People right about now are saying, 'why don't you go through another timeline?' Well the catch is, if you die from magic loss you die forever. Plain and simple. If you die with magic energy still left, you can go through another timeline and start again. So, no magic, no living. You see? Now look what's happening to you. You're slowly dying from magic loss. Which means your slowly dying for good. You quickly clutched your soul, and it started to flicker from gray to black. This means that you are low on energy. No. I'm not giving up. I'm not going through this again! I'm sorry Sans. I love you. Screaming, your energy got built up so much that a giant attack was waged against them. Chara looked in shock, but had no where to turn. You could hear their screams as the magic pierced them, like the knife they pierced into everyone else. Watching them try to hit the save button, you laughed, and saw them fall to the ground finally dead. Laughing harder, you felt a wave of relief hit you as you fell to your knees. Bending you head to the ground, you could hear the patter of feet come near you. You slowly stopped laughing when you realized something else. Your energy was so low it couldn't be replenished. You couldn't eat, drink, or even hit the save button. You were dying faster than you thought. Closing your eyes tightly, a rush of pain hit you like lightning. Whimpering, you couldn't move. Starting to freak out, black spots filled your vision as a silhouette was above you. Quickly, you noticed this creatures style of clothing, and the black spots cleared to find Sans bending down to your height.

"H-Hey Sans. What's up?"

"Y/n. Are you okay?"

"Sans? What are you talking about." You laughed lightly, but grasped your shirt out of pain.

"Fighting Chara was a stupid move. What were you thinking?" Sans said, for once in his life serious.

"It's called rushing Sans. You don't think." You laughed again but stopped to notice how close Sans was to you.

"You're hurt, aren't you?" Sans said quietly.

"Wha? No! I-I...I-I'm not....hurt..." Your speech started to slow as you realized how heavy your eyelids were. A wave of pain shot through you again, and you screeched in pain.

"Y/n! What's going on?!" Sans asked with panic in his voice.

"Nothing's..........wrong....Sans....."

You started to stand back up, but then you fell causing you to lay on your back.

"hehehe. Looks like I'm Lying on the job huh?" You giggled slowly, as you started to cough up blood.

"Y-Y/n.....what's wrong with you? Why are you acting like this?" Sans said, tears in his eye sockets.

"I'm ...........sorry....I-I didn't....I didn't want to scare you......" You paused to cough up more blood, "I'm dying Sans......I used up...too...much...magic..." Blood trickled down your chin as Sans tears started to leak on your cheeks.

"No. No...NO! You can't die on me Y/n! You promised that we would stay together! Forever! You can't just abandon me! I don't have anyone. Not Pap, or Undyne, or anyone! It would just be you and m-"

"Shhh. It'll...be....alright..." you slowly smiled and your hand held his cheek bone "I'll...always be...with you....no matter...what.." 

"Not if your dying! Please y/n! Don't leave! Don't go! I love you too much! Please!" Sans tears have now mixed with your own tears and a sob escaped your lips.

"I..love.....you...........t-too.......be.....strong...........................Sans............................"



"Y/n?"





"Y/n??"






"Y/N!!!"




"I'll never forget you....y/n."

{Reset? →Yes  No}


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Hey Lions!

First of all, sorry for the long wait! Second, sorry that this oneshot is so depressing ;__; I had no ideas and this is the first thing that came to mind. I'm sorry if the fighting part is crappy, I really don't know how to write those. I'm also sorry if this oneshot wasn't as sad for your liking, or it was TOO sad for your liking...or maybe you cried...IDK! Next oneshot will be happier I swear...or maybe it'll be a request??? I'm taking requests so please insert now!! :) Read the description of this oneshot book to know how to request...or ask me! Well hope you enjoyed it, or not....Until next time!

Your Proud Lioness,

Maddythelittlelion

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