Undeetale Stories

The story of a Shadow,A single girl, fighting to keep her sanity, and fighting for revenge against the ones who left her to die. The Shadows Strength is the story of a fifteen year old girl alone and abandoned in a world of thousands of alternate realitys and universe's, fighting to defeat her only enemies. (warning,this is the first story I'm making a commitment to,so it may not be the best.) This is a Nightmare x reader ⚠Note,I don't own anything except The readers storyline and this books storyline,all characters belong to there rightfull owners⚠