~Pharaoh-Yami (https://www.deviantart.com/pharaoh-yami)
Pharaoh Yami's fanfic BeforeTale:
Read BeforeTale on Archiveofourown: http://archiveofourown.org/works/7210085/chapters/16360199
Read BeforeTale on DA: https://pharaoh-yami.deviantart.com/art/BT-Prologue-The-Skeleton-behind-the-Gray-Door-615461441
Summary of story: Set in the True Pacifist Route. After taking Sans to a strange door they saw once, Frisk learns the past of Sans, his brother, ….and their father W.D Gaster.
Author notes: This is my first Undertale fanfiction. I’m a big fan of the idea of Gaster being Sans and Papyrus’s father. Watching playthroughs on YouTube and then playing it myself, I