Foiltale

"“What happens to Chara’s soul during a True Pacifist Run?”""This is the question that jump-started this AU. Chara slowly takes over in a Genoside run. This implies that they have always there, awoken only by Frisk’s actions and Determination, but we never even learn about them in a pacifist run. Why is that?""Maybe they’re going on a concurrent quest during the pacifist timeline. Maybe they’re aiding Frisk on their adventure. Maybe this is their one chance at redemption and Asriel can teach Chara that Humans and Monsters are both worth fighting for."

Synopsis
Asriel has been given a chance to help Chara redeem themself, saving their soul from an eternal limbo so that they too can pass on. Chara must learn to have H.O.P.E. instead of L.O.VE., [FIGHT]ing Monsters’ inner fears and insecurities all the while Frisk shows them [MERCY] in the physical world. Runs concurrently with Frisk’s True Pacifist Run, but in a mirror-like realm to the original game.

Links
Locations

Terminology

Story Links

Major
Chara

Asriel

Sans

Minor
Toriel

Papyrus

Undyne

Alphys

Mettablook

Asgore

Trivia

 * Flowey doesn't exist in the Foilverse per-say, rather he's only an entity of the canon-verse and Asriel takes his place in the Foilverse. Asriel is aware of Flowey's actions and is both saddened and ashamed of them, but can't do anything to stop him.
 * Chara takes Frisk's place in a similar sense.
 * The AU's creator is undecided, but the Foil versions of the characters could either not see each other as their foil versions, or they can see each others as foils, but that would be the norm for them so they wouldn’t think anything of it anyway.
 * Except for Sans; he’s kind of all-seeing and omnipresent that way.