In this alternate reality of Fate, the Holy Grail War is no longer a hidden ritual but a corporatized public service. Unlike the original Holy Grail War, this war is managed by the Grail Management & Observation Board (GMOB), which operates like a high-stakes mega-corporation where magi are "Salarymen" and Heroic Spirits are company assets.

Here, the GMOB has replaced the ancient lineage-based war with a bureaucratic ranking system, as its participants are ranked from Two to King. Only the highest-ranking employees (the "Ace" rank) are granted the privilege of being a Master.

Heroic Spirits are not summoned by individual families but are "indexed" by the company. When an employee is promoted to Master status, they are issued a specific Servant Class Card to manifest their partner for "Peacekeeping Operations" against rogue magical entities or rival corporate divisions.

Battles often take place during "office hours" in designated urban combat zones, with the Church acting as the Compliance Department to ensure "clean" victories.

Despite the corporate veneer, the fundamental rules of the Holy Grail War remain the same, but a bit different…as Command Spells function as high-level administrative overrides. Masters have three "Executive Orders" to force Servant compliance, the Greater Grail being a massive magical supercomputer stored in the company's basement (Mount Enzou) that amasses mana from the "Lay Lines" to power the entire city’s infrastructure…and the true purpose remains reaching the Root (Akasha), which the corporation rebrands as "The Ultimate Market Monopoly" or "Infinite Knowledge Patent".

The war is technically a continuous tournament. When a Master-Servant pair is defeated, they are "fired"—the Servant’s soul is returned to the Greater Grail "Mainframe" to fuel the next quarter's projections, and the Master is demoted back to a lower pay grade.

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