(Obsessed)Nightmare Sans x Blind Reader Trigger Warning! Abuse! For Mature Audiences ~~~ Y/n has known nothing but darkness her entire life. Blinded by the cruelty of her past, she navigates the world with cautious steps, haunted by the scars of her abusive upbringing. Yet, amidst the shadows that cloud her existence, she discovers a glimmer of hope in the form of a mysterious stranger who watches her from afar. Nightmare Sans is captivated by Y/N's ethereal beauty and resilient spirit. Obsessed with unravelling the mysteries shrouding her life, he becomes entangled in a dangerous game of cat and mouse, risking everything to protect the object of his affection. Wondering who exactly is in control, a lonely boy only desiring love, or a manipulative shadow? As their lives intertwine, Y/n and Nightmare find themselves drawn into a whirlwind of danger and desire, their fates bound by an invisible thread that defies logic and reason. But as secrets are revealed and dark truths come to light, they must confront their deepest fears and confront the shadows of their pasts.

This story contains lots of dark topics. This will be your ONLY WARNING. There will be no other warnings from this point on. Topics include, but aren't limited to: • Suicide • Self Harm • Dark Thoughts • Abuse If you can't read things that include those topics, this story is not the one for you. This story is also on Quotev, written by me, so please don't think I'm stealing.

This is my first story so I am so sorry if this story turns out to be shit. I want to try and make it have some smut so if you are innocent, TURN AROUND AND LEAVE Ok thank you bye :)

Want to talk about falling into the wrong place at the wrong time? Y/N definitely scored big time on that one. One moment she's falling, the next she finds herself trapped underground with a monster that wiped out his own kind. He's a cold-blooded killer that never shows any emotion. Though, as time passes, she finds out that Sans isn't as heartless as he plays himself to be. Hello! Writer~San here! Cover art and Undertale AU/Characters aren't mine, but the story definitely is. I hope you enjoy it!!!!