A sin of blood must be paid in blood. A mistake by the sword must be remedied by the sword. A broken child, cast aside. For her father who has forsaken her, for her mother who has cursed her into doom, for the people who loathed her, she'll prove them wrong. By her comrades' assistance, she'll walk a path no one can bear: a path of redemption. Multi!Crossover.

Sometimes, the tiniest of changes can have the greatest impact on the world. One chance encounter goes in a new direction, and the course of the Holy Grail War is irrevocably changed...