The Proxy Emiya Shirou Wants to Become Human

The Fourth Holy Grail War in Fuyuki, which should have taken place in 1994, was cut short after Nero, one of the Twenty-Seven Ancestors, killed most of the participants. After saving a boy caught in the crossfire, Kiritsugu Emiya chose to bring Illya home and settle in Fuyuki, waiting for the ritual to begin. But things would not go as he wished. Ten years later, Nero of the Twenty-Seven Ancestors returned and took Kiritsugu Emiya's life. The boy, burning with the desire for revenge, was taken away by the Ancestor of the Sword, who was pursuing Nero. He would come face-to-face with the true nature of the Mystic Side.