1934, Fuyuki City, Japan.
This was where the Third Holy Grail War took place.
According to the original course of fate, this city would host a fourth and even a fifth Holy Grail War in the future.
But in this world, a change in one part of the process altered that future.
The appearance of a Servant of the eighth Class, Ruler-the Arbiter-disrupted the Holy Grail War's original order, throwing the ritual into chaos and forcing it to end prematurely.
Among the Masters was a Mage from Romania who, even before the Holy Grail War began, had conspired with the German Third Reich, which sought "the occult"-supernatural power.
The terrain collapsed during the Holy Grail War, and the Mage happened to discover the Greater Grail's location.
With the aid of Nazi troops, he defeated Fuyuki's Three Founding Families, weakened after the recently concluded Holy Grail War, along with the Imperial Japanese Army, and seized the Greater Grail.
Afterward, he lured the Mages and troops escorting the Greater Grail to Romania and slaughtered them all, breaking away from the Nazis and hiding the Greater Grail in his clan's castle.
This incident exposed Fuyuki's Holy Grail War system to the entire occult world.
Even though only its outermost workings had been revealed, Mages around the world began imitating it, reconstructing all manner of Subspecies Holy Grail Wars.
With them came a vast number of deaths among the occult world's Mages.
Taking advantage of this, that Mage used political maneuvering to elevate himself from the rank of Brand to an honorary Grand Mage.
This Mage was Darnic Prestone Yggdmillennia, a Second-Rank Lecturer renowned at the Clock Tower for his silver tongue and known as "Eight-Tongued."
After the Third Holy Grail War, Darnic moved the Greater Grail to his clan's castle and continued adjusting