Ep. 4: Shirou and Rin confront Shinji after his Servant kills Illya, revealing Gilgamesh's identity.

Shinji’s Servant kills Illyasviel, prompting Shirou and Rin to intervene. Rin threatens Shinji, forcing a retreat before he reveals his Servant is Gilgamesh. While burying Illya, Rin argues Shirou must prioritize himself to avoid breaking, citing Kiritsugu’s rescue as admiration rather than justification for self-sacrifice. She claims wishing for others' happiness is machine-like, but Shirou remains committed to his ideals. The pair evaluates Gilgamesh’s power, deciding Caster remains their priority. Lancer approaches and offers assistance, which they accept. Meanwhile, Archer learns Kuzuki supports Caster’s plan to return to her era via the Holy Grail. Archer confronts the group at the church, engaging Lancer to buy Shirou and Rin time to breach the building. Rin reveals that only one such jewel exists in the world, and Archer had previously returned it to her.

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