Fractured past (Glitchtale fan AU)

What if the "experiment" that Frisk went wasn't made to replace him. What if it was to go back in the past? Would things be different if he changed the past? Find out over here!

Credits:

Cover book made by Minhdo on Glitchtale Amino.

Glitchtale belongs to Camila Cuevas.

{Disclaimer} I own nothing but the AU and the story of the AU.