Swapfell! Sans x Reader A tsundere's love (Completed)

You're just a young human girl trying to survive. You're friends with the Skeleton brothers from Undertale, Underswap and Underfell. What happens when you meet Viper, the Sans of Swapfell?

WARNING TRIGGERING CONTENT! If you have depression or thoughts of suicide please be catious of reading this for it has mentions of both. If you want I am welcome to listening to problems to an extent.

Disclaimer: the picture is not mine, I just edited it. The credit is in the picture and I want to thank the artist who drew it for giving me the inspiration to write this fan fict. Viper's personality is amazing in their comics!

I'll try to update weekly.