Forgotten friend (nightmare!sans x reader)

(Y/n) a old friend of nightmare and yes i know what your going to say is no nightmare sans never had a friend .Well you would be wrong (Y/n) was one of nightmares only friends the one that would alway come and see him and not his brother dream and don't get me wrong she didn't dislike dream. But she thought that nig...

Nightmare sans x female reader

Y/n lives a normal boring life with her parents, wake up, go to school, go home, eat, go to bed, repeat. That's it. Well, that is, until an injured small skeleton appears in her room.