MATURE CONTENT. SMUT WARNING. DO NOT READ IF YOU AIN'T INTERESTED ? SMUT CAN HAPPEN IF REQUESTED ? Au's WILL Be Included too! ? message author down in the comments or privately if you want to stay anonymous ?

Okay I am so sorry I didn't say this earlier. Most of the lemons here are not written by me. If you saw them from another website, don't hesitate to tell me and I will (as soon as possible) credit the author. If I know who it is I will definitely give credit. Sorry for that, tho.

This is my first story ever so sorry if it is bad ¯\_(ツ)_/.

*UPDATE: All ranges of Undertale smut/lemons (mostly lemons by this point) No longer one shot. Contains multiple one-shots, and occasionally two-shots. Male readers can request a character x male reader :) Underfell Sans x Female Reader. Smut or a Lemon *shrugs* might be a one shot (if no one wants more I guess)