Fate/strange Fake

A new Holy Grail War begins to take shape in Snowfield, Nevada, drawing mages from around the world to summon Heroic Spirits and fight for a wish. Almost immediately, the ritual displays irregularities that should not exist: a missing class, impossible summons, and an entire city prepared in advance as a battlefield.

The apparent war is itself a counterfeit built from information stolen from the Fuyuki ritual. Beneath it, another set of seven Servants begins forming a genuine Grail War, including a Saber who saves the life of Ayaka Sajou and appears to claim her as his Master. With every participant hiding motives of their own, the fake and true wars start overlapping until even the boundary between the deception and the real conflict becomes dangerously unclear.