Real pacifist (undertale reader insert)

Undergoing heavy editing for grammar and fluidity, since writers' block is halting me from continuing.

(The references to TMNT are because of somewhat scrapped plans for a sequel crossover, will see where I go with it once I've finished this)

THIS IS AN AU. You and Frisk fall into the underground after playing the game Undertale and attempt to help the monsters reach the surface, but do you succeed?

P.S. contains Undertale spoilers, and this story will make more sense if you have played Undertale. I do not own any references I make.

Italics=A/N (authors note) Y/N= your name F/C= favourite colour, N/N= nickname.

Undertale belongs to Toby Fox. For more information read my author description.