Undertale one-shots, imagines and scenarios reader x various Requests open! I have a habit of slipping into Fem reader, but i'm happy to make a gender neutral or male reader one-shot if anyone would like DISCLAIMER: I DO NOT OWN UNDERTALE, any AU's or the lovely art

After Frisk goes missing, Caitlin, Frisk's twin sister goes looking for her in the the last place she saw her. MT Ebott, the mountain of dark legends, she finds a necklace that belonged to Frisk on the ground. Just like Frisk, Caitlin tripped and fell into the Underground. Caitlin finds things she never knew existed.