Kids like YOU (Sans x reader)

NO MORE

"N-No! Please... s-stop..." You pleaded as he started to kiss your neck. But just then, he stopped. There was the sound of someone opening the door downstairs. 

"Hello? Papyrus? Sans? Where could they be..." You heard Undyne say.

Sans was looking to the door but then looked you in the eyes with a deadly glare. He got up and quickly tied a handkerchief around your mouth. You tried to speak or scream out, but it was muffled.

"DON'T-" Sans pulled close to you "-Make a sound... I'll be right back"

*Undyne's Prov*

Man, where is everyone? It is so quiet... I think quietly to myself. Then I hear a thud upstairs. "Hello? Papyrus? Sans? Where could they be..." I found myself calling out. Everything is quiet... too quiet.

"Oh, hey Undyne" Sans greeted, springing down the stairs. He seemed a bit off for some reason.

"Hey Sans, how are you? Where are (y/n) and Papyrus?" I asked.

"You actually caught me at a bad time. I was about to hop in the shower before Papyrus and (y/n) get back from the store"

"Oh okay" I chuckled. "Sorry about barging in like this. The door was cracked and I-"

I stopped when I heard a muffled scream from upstairs, then I look at Sans questionativily. "Uh... what was that?"

His expression went blank and he started to sweat and was silent. Something was up; he was getting so nervous. I went past him up the stairs but he grabbed my arm half way up.

"Yo-You can't go up there!!" Sans exclaimed. "What do you mean I can't go up there? What are you hiding??" I yanked my arm back. His expression went cold and dark.

"I can not let you go up there Undyne... or else..." I could see him pull something out from behind his jacket, silvery and blood covered. It was a knife.

"Sans what iS GOING ON?" I interrogated, stepping up the stairs a little. "W-WHY DO YOU HAVE THAT KNIFE?!"

He said nothing, just crept closer. I darted up the stairs and down the hall, he followed.

*(Y/N) Prov*

You had overheard them talking so you squirmed and tried to call out but couldn't. Eventually you fell and Undyne must have heard that because she was now crashing into the room and locking the door behind her.

Sans pounded on the door "UNDYNE!! OPEN THE DOOR" the knob rattled and he banged more "UNDYNE!!!!"

She stood shell shocked then you tried to scream though it was muffled. She turned to you and gasped "AH! (Y/N)!! Oh my gosh what happened?!". She worked quickly untying you and removing the handkerchief "-Undyne!!" you said relieved.

"Why is Sans-?" She started to ask but you interrupted her. "NEVERMIND THAT, PAPYRUS AND ANOTHER HUMAN ARE IN THE OTHER ROOM TIED UP"

Undyne froze. "Another... Human?"

"Yes, his name is-" "-IT'S A HE?" she cut you off.

"IT DOESN'T MATTER!! PLEASE GO UNTIE THEM! I'll take care of Sans..."

Before you knew it, you both were on your feet and she was rushing down the hall. It seemed all too quiet, so you made your way slowly down the stairs. Half way down you spotted Sans on the couch... wiping the blood off of his dagger.

He looked up at you and gave a twisted smile. "(y/n)!" Sans exclaimed.

"Sans...." You said, and he looked at you with that old look. The one he used to give you before all this happened. You knew the look now: Love, Hope, Pleading for acceptance. "Yes (y/n)?"

"How many..." You asked "How many have you killed?"

His hopeful expression faded to a guilty and defending one. "...Chara... Frisk..." He looked you in the eyes from across the room. "...I HAD to kill them! I only kill if I HAVE to! A-And I'll admit it, when it comes to you, I get a little... obsessed.... protective...."

"You HURT Paps... he's your OWN BROTHER!" You said coming closer, to the middle of the room. Tears started to fill your eyes again and you felt your face heat with anger.

"I HAVE TO HAVE YOU (Y/N)! NO ONE ELSE!!" Sans screamed, standing up. "Y-You're the only one who gets me, w-who would understand what I'm doing here!!" He took your hands and gave you a desperate puppy-dogged gaze.

"Sans..." You said, gripping his hands. This was so hard for you, doing this, seeing what he has become. "...I don't understand..."

Sans' eyebrows furrowed in confusion. "W-What?"

"Sans... you're hurting people. People you love-"

"People who tried to take WHAT I LOVE (Y/N)!!" Sans yelled, flinging his arms in the air. By now, Undyne was making her way down the stairs with an unconscious Papyrus in her arms. You turned around and saw.

Awe poor Paps, this must have all been too much for him. "HEY, YOU CAN NOT LEAVE" Sans said. And in an instant, Undyne flew across the room and crashed into the wall upstairs. Papyrus was encased in a blue glow and brought back to his room.

You looked in terror at Sans' face trying to ask him to stop but caught in wordless horror. He was completely consumed by his own determination, his eye lit with a flame, anger and frustration consuming him. He had dropped the knife on the couch when he decided to use these magics.

Undyne was then picked up and Sans brought her down with this power and started firing attacks at her. She was too weak because of the slam to fight efficiently, and she was hesitant because it was Sans. 

"SANS STOP!!" You cried, but it was no use. The spears were flying throughout the room, and so were bones and gaster blasts. This was too much, it was all too much. The silver of the blade glistened, beckoning you.

Sans gasped. The attacks ceased. You had stepped in front of him and plunged the knife into his chest. Till now, you were unsure if he had a heart, but you saw his soul appear before you. It's flicker was like a heartbeat, but it was diming out.

Undyne gasped "...(y/n)..." You pulled the knife out.

Sans' eyes were wide and the color faded back to normal and all the magic that he had created dissolved into nothing. His knees gave out, couldn't stand, and he fell to your arms coughing.

"(y....(y/n)...w-why..? I thought.... you..." Sans spat out with every last breath. Undyne and Paps had come down and were surrounding you and him now as he said these last words.

"Sans... I'm so sorry.... Yo-you couldn't continue to hurt people I care about..." You said. A tear rolled down your cheek as he reached up to hug you. You hugged back... it was the last hug you'd ever have from him again.

"But... it meant I had to hurt the one I cared about the most..." You said regretfully.

"Should we try and heal him?" Papyrus said. "We are all too damaged. Even if we all gave everything to heal him it wouldn't be enough..." Undyne replied sniffling.

"(y/n)......" Sans said weakly running a shaky hand through your hair.

"Yes?" You replied quickly, taking hold of his hand as he gently touched your cheek. He leaned in close...

"I... love you... (y/n)" He said, using the last of his magic to make a small blue ring, placing it in your hand. You whimpered and sniffled. It was beautiful.

"I love you too Sans" You started to sob... because that was the last thing he heard before you saw the light go out in his eyes and his soul turn to dust.

The End.

In the end, Grillby named a seat in the diner after Sans. Papyrus got a girlfriend and eventually became a father and always told his children about their funny uncle and taught them jokes that he used to tell. You and Brail went back to the surface and were mutual friends, having been the only two humans to experience the Underground. You wore the ring all the time, remembering Sans...