The Holy Shirou War

7 Legendary Heroes from across Space and Time are summoned to compete for the most sought after holy relic in the world, the Holy Grail capable of granting wishes. At least, that was how it was supposed to be. Instead, 6 different versions of the Emiya Shirou across different universes and realities are summoned as a result of a glitch in the system. (Also featuring Lancer!)