Chapter 9 … Context Shirou we need context
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Returning home, Shirou learns from Taiga that Ayako was found alive without any visible injuries. He then meets up with Gil at the apartment dojo, and he approves of the truce that she 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, Gil 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 Gil to a duel.
Gil doesn't even need to think before destroying the ground below him and assassin before sprinting to the temple and through the front door and throwing Caster away from Shirou. Assassin quickly appears in the temple seeing that Archer had secured Shirou, quickly goes to Casters side. Seeing this I quickly grab Shirou and hold her bridal style before opening multiple gates behind me and shooting them at the ceiling causing a dust cloud to cover the room allowing me to escape back to the house. At the apartment dojo, Shirou asks Gil to teach her the art of swordsmanship, now unwilling to be put in that situation again.
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After a sparring lesson, Gil notices that Shirou was unconsciously using EMYIA's stance. Shirou arrives late to school and is greeted ominously by Shinji. During lunchtime, Rin reluctantly forces Shirou to eat with her at the school rooftop. Rin tells Shirou that the bloodline of mages of the Matō family died off with each generation. She admits that she recently found out that Shinji was a Master, but she relented in attacking him because he lacked experience in magecraft, which now results in another Master present in the school.
Rider suddenly activates a stronger magical barrier around the school, which absorbs the mana of everyone except Shirou and Rin. The two are attacked by skeletal beings called Golems, and Shirou summons Gil via Command Seal. Gil battles the Golems while Shirou and Rin go to the school's first floor to disable the barrier. After dispatching several Golems, Gil faces off against Rider and manages to stab her. Rider is revealed to be an apparition created by Caster, who disappears.
Meanwhile, Shirou and Rin find Shinji and the corpse of the real Rider, which dissolves, causing the barrier to dissipate. Shinji refuses to identify the Servant who killed Rider and flees the school. After Shirou, Gil and Rin assess the situation and deduce that Caster killed Rider, Rin notes Shirou's ability to recognize the conditions of the unconscious students and employees. Shirou replies that she is used to seeing dead bodies, which confuses Rin.
Gil '… Context Shirou we need context'
Soon Saber arrives following the battle, Rin informs her that Rider has been killed by Caster.