Shirou is the priest of Fuyuki, and overseer of the holy grail war. He was not meant to summon a servant to fight with. Yet suddenly, the ritual activates and a servant is summoned. Shirou looks annoyed at the blue smoke, slowly clearing to reveal the servant who was summoned Who the hell are you. Shirou says coldly, on his guard as he doesn't let any attack hit him if the servant he summoned tried to attack