The Skeleton's Grin (Sans x reader)

It's been 5 years since monsters emerged from Mt. Ebott. They integrated into society rather quickly, but they still have people who disagree against the Governments decision to give them rights. Personally, you think monsters have better morals and attitudes than humans do. And who new that all you had to do to gain new friends was to get stabbed in the leg?
When your insane brother escapes prison unexpectedly, you never have been happier to have friends who care about you.
However, one monsters smile keeps you filled with hope and determination along with something you denied yourself of years ago...