The great tale of Fr- I mean Oliver (Not continueing)

How? Why? nothing makes sense, I meet a SKELETON THAT TALKS and now I'm in the Underground?

Puns ( Sans x reader )

Warning! There is a chance that there will be spoilers for the pacifist run of undertale. I recommend finishing that before reading this. There won't be any spoilers for the no mercy run, so don't worry about that! Also, don't worry about anything NSFW/lemon if that's not what you're into-there won't be any of that he...