Yandere One Shots

Yandere!Classic X Reader

Sans P.O.V

I saw Y/N talking with Papyrus non-stop and it was making me really mad. The one person they should have a right to talk to is me and only me. I can't stand it, ever since she fell underground all my thoughts have been on her. When she talked to anybody else it made me jealous and angry. They had beautiful H/C hair and gorgeous E/C eyes. I feel my soul pounding and the only thing going through my mind is murder. Anybody who talks to Y/N will die, I don't care who it is. They...Will...DIE!!!!

Your P.O.V

I was talking to Pappy about pasta recipes to get his mind off of what happened earlier. He ease dropped on Undynes conversation and found out Undyne was never going to let him join because he was too soft. He was hurt and he was like an uncle to me.I asked him to try out the pasta recipes I wrote down. I was a cook on the surface so I know a lot about recipes especially on pasta and stuff. He ran out of the house so excited. It made me so happy to see him smile again.
" THANKS HUMAN " He literally yelled. I don't know why he calls me human but it was so adorable so I didn't mind. I looked at Sans and his left eye was glowing and it only glowed when he was really angry. What could of made him so angry that his eye would flare up like that. It wasn't a normal flare either it was more, uh flarey than usual. I walked over to him snapping him back to reality.

" You alright sans ", I asked worringly. We locked eyes for a moment but in that moment I sensed a really dark aura around him and I knew something bad was going to happen.

" Yup, I'm alright kiddo, never better, anyway where did Papyrus go " He asked. I looked at him with caution that dark aura was getting stronger. I shrugged. Lie was written all over that shrug. " Don't lie to me kiddo, I don't like that and you know it ", He growled. I knew there and then something was going on he had never gotten angry like that before. He looked at me and repeated the same question.

" I don't know Sans, honest and besides he's a grown adult, he doesn't need you to babysit him. Besides I don't want you to bother him because right now he is having a hard time. I love pappy but he needs space right now and you seem in a bad mood right now. ", I replied with annoyance. He eye flared up again but when I looked in his eye, all I sensed was a horrible aura of....Insanity. He knows I was lying but I didn't want him bugging him right now. He created a gaster blaster at me. " Where is he ", He said with no emotion. I was shaking too badly to answer. I looked at Sans. He had this horrible grin on his face and his left eye was flickering from blue to red. " What has gotten into you ", I yelled on the verge of tears because I was so scared.

" You keep talking to others and I don't like it ", Sans snapped. He was acting weird. I couldn't understand it. I sensed a lot of emotions but not one was good.

" I talk to other people because they're my they're my friends and I love my friends more than anything. ", I said raising my voice a little. He snapped. He created a bunch of bones and surrounded me like a cage. I was horrified. What was his problem.
" SANS LET ME OUT NOW ", I yelled. He just sat there with a nasty grin. What was happening to my friend. Why was he acting like this. Something was wrong. " Sans this isn't funny, let me out right now ", I said strictly. He just....laughed like a psychopath. He walked up to the bone cage. He looked at me with a grin and his eye it wasn't blue. It was red and filled with blood lust. I was shaking beyond belief. He seemed to enjoy it. What was wrong with him. A million questions raced through my mind. He suddenly broke the silence.

" You belong to me kiddo, Your not allowed to talk to anybody but me ", He said strictly with a nasty grin on his face. It became offical he has lost his mind.

" I don't belong to YOU Sans, I will talk to whoever I wish and you have no say in it ", I stated. His grin turned into a frown. He snapped his fingers and the bone cage and gaster blasters disappeared. I got up and started to walk to the door.