Nightmare (An Undertale Fanfiction)

In a world where only the strong survive, there is me. I'm not strong, or a survivor, but I'm still here. My parents have kept me hidden from the world, never letting me leave the house. My parents aren't cruel people, they keep me hidden to keep me safe. They have always loved me. Until one day when I ask to go outside. Something inside them snapped and they beat me. That was my first punishment, one of many. It's been years since then and I've finally escaped. Of course I was caught, but I had a moment of freedom. I, however, am no longer wanted after my stunt, and are taken on a camping trip. On this trip, my parents pushed me into a gapping hole in the ground. I fell into the Underground. Where will my life go from here?
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This is a reader insert, but I will try my best to avoid using (y/n) and the likes. All the Sans-es (except Underswap!Sans) are evil-ish.

Loli!Reader, Innocent!Reader, Abused!Reader, Undertale!Sans, Underfell!Sans, Underswap!Sans, Gaster!Sans.
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