The Final Decision.In an attempt to make Shirou selfishly happy, Rin decides to take him out on a date into town, accompanied by Saber, but Rin teases Shirou the whole time to his chagrin. Shirou turns the tables by making Rin confess that she spent the night with him out of concern, and ultimately he is not satisfied. While returning home, the three find themselves inside a magical barrier, and they are ambushed by Caster and several water Golems. Caster reveals that she has Taiga in captivity, threatening Shirou to hand over his magical circuits to her. When Shirou refuses, Caster tells him that she knows about the fire that he survived ten years ago, then claims her knowledge of a method to summon the Holy Grail without any further fighting, which can only be accomplished by Saber's mana. Shirou allows Caster to take his Command Seals in order to rescue Taiga, but an ambivalent Saber engages Caster in battle. However, Shirou uses a Command Seal to stop Saber, allowing Caster to stab Saber's heart with her dagger-like Noble Phantasm, Rule Breaker. This takes Shirou's remaining Command Seals and gives Caster control over Saber. After releasing Taiga, Caster forces Saber to kill Rin, but Shirou is injured while taking the blow. Saber then resists against Caster's magic long enough for Shirou, Rin and Taiga to escape with assistance from Archer. Regaining consciousness at Rin's house, Shirou finds a red jewel pendant, the same one that Rin used to revive him after he was first stabbed by Lancer. Meanwhile, Caster arrives at the church and demands Kirei to tell her the location of the Lesser Grail, the vessel for the Holy Grail. She attacks him with Golems when he refuses to disclose the information. Shirou finds Rin at the top of a skyscraper. Rin tells Shirou that there is no longer a reason for him to be involved in the Holy Grail War without Saber as his Servant. As Rin leaves with Archer, she warns Shirou to stay out of the Holy Grail War from now on, otherwise he will die.