It starts out as a Sans x Frisk but later you will get to the sans x reader. (Please note that I may make mistakes in writing it like grammar, spelling, etc.) but onto the story topic now. Frisk is the eighth fallen human (including chara). She is greeted by flowey as in the game. Also frisk is 17 or 18 (whichever one u want ;) ) in this fan fiction. And for the sans x reader part it's you... So you can design yourself however, you can even choose a OC instead of you :) it dosent matter (but note if you choose a OC it will be called human). You can make yourself whatever age you want, hair color, eye color, and etc. And you can just choose to be yourself if you want to :). Also I like to think of chara as her ghost friend that follows her around. Also please don't hate, just avoid my stories and everything will go good :) Also don't comment that my stories are awful or something . Save that opinion to yourself. ALSO THIS CONTAINS SPOILERS (obviously).