Me: hello friends! This is an UnderSwap Yandere Sans X Chara fanfiction. If you don't like death or sad things, or sans being possessive, DON'T READ THIS! If death, sadness, or possessive sans, are things you like then ENJOY!

Disclaimer: I do not own UnderSwap or it's characters.


(Chara's P.O.V.)

I felt the tears start to stream down my face before I finally realized what happened. He was gone.

It started out with a few monsters that died, then more of the ones I knew started to die, and then even my friends started to disappear. I noticed a pattern in the disappearances: I was connected to each of them. Each monster who had died had either known me, talked to me, or even just smiled and waved at me.

At first I thought maybe Frisk had something to do with it, since she now had a physical body because of Undyne's experiments, but when I found her she was dead too. I finally went to talk to Papyrus so he could help me figure out what was going on. After that I went to go watch TV and take my mind of things, but then I felt a hard metal object hit the back of my head, and I blacked out.

I woke up here, in the shed next to Sans and Papyrus's home. Even though it's dark I can still recognize it. I tried to stand up, but something yanked me by my arms back down. I winced in pain as I turned to see that my arms were chained to a wooden post.

"Well, well, it looks like your finally awake," a voice from above me said.

As my eyes adjusted to the darkness I looked up to see Sans standing in front of me. I was about to say something, but then I saw someone lying on the floor. Once my eyes fully adjusted I saw that it was Papyrus, but he wasn't moving.

There was a knife on the floor next to him, and that's when it started to sink in. His body slowly started to turn to dust, and the tears started falling from my face.

I looked down in disbelief. Sweet, innocent, kind, and taco loving Sans was a merciless killer. I could hear the shakiness in my own voice.

"Sans, why?" I asked not turning my gaze away from the floor. I heard him bend down, as he put his hand on my shoulder. His other hand rested on my cheek as he turned my head to face him.

"I did it because I love you, and I didn't want anyone to get in the way. Your mine Chara, and don't ever forget it," he said as a bit of red flashed in his eyes.

I stared at him through my blurred vision, and said, "Sans, I already love you. You didn't need to do this. No one would have gotten in the way."

"How do you know that? What if someone did? I wasn't going to take that chance," he said tears also starting to roll down his face.

"San-"

"I don't want to lose you Chara!"

He wrapped his arms around me, both of us were still crying. I thought about RESETing, but what if I ended up having to go through this again, or worse. I decided against it. Maybe one day Sans will miss everyone, and regret his actions.

Until that day comes, I guess I can just make him happy. After all he's all I have left, because we're the last two standing.


Me: T-T this was sad for me to write, but I have recently really liked the idea of Yanderes so I thought I'd try this. I hope you guys liked it. Thanks for reading.