Mirage.Shirou senses Archer following him on his way home, and they have a brief conversation. However, Shirou is surprised that Archer has no interest in the Holy Grail. Archer explains that Servants are mere tools for their Masters and reveals that he died with no unfulfilled dreams before disappearing. Returning home, Shirou learns from Taiga that Ayako was found alive without any visible injuries. He then meets up with Saber at the apartment dojo, and she approves of the truce that he made with Rin. The next day at the school library, Shirou senses a sigil in one of the bookshelves, which Rin disables. They explore the school grounds and disable other sigils, which they realize were set up for strengthening the magical barrier placed over the school. While preparing to head home, Shirou is confronted by Shinji, who reveals himself as Rider's Master and also the one who set up the magical barrier, also exposing the entire Matō family as a former clan of mages. Shinji tries to convince Shirou to form an alliance, but Shirou turns the offer down with the promise to keep quiet about their conversation. The following night, Shirou wakes up and finds himself restrained at Ryuudou Temple. He is approached by Caster, who admits responsibility for a purported series of gas leaks all over Fuyuki City, enraging Shirou. Meanwhile, Saber senses Shirou's disappearance and heads to Ryuudou Temple, only to be halted by the Servant Assassin, who claims to be the Japanese swordsman Sasaki Kojirō. Then, he challenges Saber to a duel. Caster expresses her intention to remove Shirou's Command Seals and transplant them to her own Master. Before she can do so, Archer intervenes and prepares to engage Caster in battle.