Nightmare sans x Reader Rewrite

In a time where Monster kind is fighting against Monster kind in a war, there lived peaceful alternative universes oblivious to the challenges of light versus dark sourounding them. One of the peaceful universes is a branch off of the classic Undertale universe. A timeline split, where a human child named Frisk stayed in the Underground with the monsters; instead of freeing them. Despite monsters not coming to the surface, the surface was about to be a battle field for monsters of a different universe. From every universe, the Bad guys; take one specimen as a token of their chaos. The token of this battle field, will be one of many to show the Star Sanses they can't save everyone. When presented to the King, as a personal helper. The token; will shine brighter than any. With the determination to escape she, The Token; will do whatever it takes.

This is a rewrite of my old book I never finished, so I hope all who have read that book will journey over here to read this one, I am thrilled to give you hopefully a better story with more detail and less cringe. If you can't already tell this is a Nightmare sans x reader Rewrite as the title entails.