Undertale: Diary Of A Wimpy Sans 1: An Unofficial Undertale Book (Undertale Books) (Volume 1)

Have you ever wondered what happens to Sans the Skeleton after the War Between Humans and Monsters? Sans leads a comfortable and sluggish life with his lovely brother, Papyrus in the deepest part of the underground-verse. Everything changes when Sans came across a human lost underground. Will Sans kill the humanoid or help her return to the surface? Get ready for fast-paced funny adventures complete with monsters and secret missions.