Prologue: The Start.

Science!Sans made a reverse personality potion, they used it on Error,

Such a big mistake.

What will happen to the multiverse if the merciful destroyer changes?

Can they reverse the reverse potion and realize their mistake just in time before the multiverse fully collapse?

(Fgod concept belongs to harrish6, I do not own undertale nor the characters featured in this story.)
(I drew the cover- what an improvement aY-)

Date Published: August 23, 2021
Date Ended: Jan 1, 2022