Answer.As the battle continues, Archer chastises Shirou for continuing to pursue his ideals, declaring he will wipe out every trace of Shirou's existence. However, Archer begins to realize that Shirou will never give up and that it is pointless to defeat him now. Finally, as Shirou explains the beauty he saw in his ideals, his spirit begins to overwhelm Archer's Unlimited Blade Works. Shirou rushes towards Archer, who becomes distracted by a flashback of Kiritsugu's last moments. Archer is wounded by Shirou just as Rin arrives. Suddenly, Archer is impaled by three swords fired by Gilgamesh. Declaring his hatred for fakes, Gilgamesh uses his Gate of Babylon to fire more swords, but Archer pushes Shirou out of the way and seemingly dies after taking the full force of the attack. Expressing a familiarity with Gilgamesh, Saber demands to know why he is here. Gilgamesh explains that after the end of the Fourth Holy Grail War, he bathed in the Holy Grail during its destruction at the hands of Saber ten years ago and took physical form. He further explains the true function of the Holy Grail as a container for thousands of curses, before announcing his intention to take it for himself and use it as a weapon to eradicate the human race, being disgusted by the lifestyle of modern humans and hoping to rule over any potential survivors. He then leaves the villa as the fire Lancer started spreads through the building, and later finds Shinji in the forest, learning from him about Kirei's death and the reason behind Rin's escape. When Shinji asks about finding a vessel for the Holy Grail, Gilgamesh implants Illya's heart into him, deeming him a worthy vessel, and leaves him as he begins to mutate into a massive, shapeless form of flesh.