Undertale Lemons

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.

[[DISCONTINUED]] Make me feel Alive (Underlust!Sans x Female!Reader)

It's been a few years since the monsters had been freed from the underground. You can't say you hated it, though. Sans had been one of the first monsters you befriended (only because of his sexual puns,) and he had introduced you to his group of friends. One of his friends, Grillby, caught your eyes. You had started s...

Ask swapfell sans & underlust sans SECOND BOOK

Read the first one ._.