O N E

*you wanna see how humans treat us up here? read the story and you'll probably treat others better than before. yeah, that's right. everyone's rude in someway. not everyone is kind.

A/N: Just because there's a mature content on a story doesn't mean there's gonna be Lemon alright. There's tons of violence here! And if you think there's too much violence, just take a look at the genocide route of Undertale. The violence never ends. Also, cussing will be censored ;)

And don't worry. I know some of you like funny Sans x Reader stories, so I'll try make some funny chapters later on ;3