Idealism's End (The Answer).As Shirou, Saber and Lancer arrive at Illya's villa, they are met by Archer, who explains that Rin's pendant was the catalyst used for his summoning. While Lancer runs off to retrieve Rin from Shinji, Saber demands to know why Archer is so intent on killing Shirou. Archer fulfilled his aspiring ideals to becoming hero of justice, but he became disillusioned by it and chose to become a Servant so he could rectify it. Saber is forced to reveal her true identity as King Arthur, who hoped to use the Holy Grail to undo her decision to become the king of Britain, as she believes it was her rule that eventually resulted in the country's destruction. Although Saber remarks she is different from Archer in terms of living up to their ideals, Archer elaborates that he was dissatisfied when he was a Guardian, being forced to take lives in order to save many more. He concludes that his ideals were shallow and that it was impossible to save everyone as he envisioned. Archer then reveals his true identity as Shirou's future self from an alternate universe, the Counter-Guardian Heroic Spirit Emiya. Meanwhile, Shinji tries to molest Rin, only for Lancer to arrive and incapacitate him. Kirei suddenly appears and unveils himself to be Lancer's Master. He further discloses that he killed Rin's father in the previous Holy Grail War, and therefore was the Master with dark intentions. Kirei orders Lancer to kill Rin, intending to use her body as a vessel for the Holy Grail. When Lancer refuses, Kirei uses one of his many Command Seals and orders Lancer to commit suicide. Back at the main entrance, Archer tosses Shirou one of his swords and orders him to kill himself with it. However, Shirou declines, proclaiming that he will do all he can to avoid becoming Archer. As a result, Shirou and Archer prepare to engage each other in battle.