Forgotten Past (An Underswap Frans Fanfic)

Frisk is one of the King and Queen's children, the first human who fell from the surface. And just suddenly disappeared one day.

Little by little, Frisk went insane, it was hard for her. The silence, the unending hours or days of feeling nothing, of seeing nothing but the dark itself. She even sometimes thought she was probably already in hell, but that was not the case.

Because she just need that right human to get summoned.

And it was Chara. The red soul that later on had this increase of determination that which summoned and awakened the dead long lost princess, which to Frisk's horrifying excitement.

During her freedom and journey, will she remember forgotten pasts?