Underfate hikaye

An alternate universe in which the seven Boss Monsters encountered by Frisk; Toriel, Sans, Papyrus, Undyne, Mettaton, Muffet, and Asgore are thrown into a Holy Grail War against one another. Keep in mind that this isn't an official fanfiction, but this is information on each "Heroic Monster" as I'd like to call them.