S1E1: The Heroic Spirit Incident

Due to the anomalous battle taking place in the desert between Archer and Lancer, various factions become aware of the commencement of the Holy Grail War. As the situation unfolds into chaos, Faldeus, tirelessly acquiring information and manipulating the press, catches sight of a girl new to Snowfield. This girl is Ayaka Sajyou, who wanders the city aimlessly. A mark resembling a Command Spell is engraved on her body.