第 3 集: 上條當麻發現茵蒂克絲與必要之惡教會的過去，並遇見一名陌生人。

Kamijou learns more about Index’s history with Necessarius, the Church of Necessary Evil. Later, after a trip to the bathhouse leads to an argument with Index, Kamijou finds himself in the company of a mysterious stranger. (Source: FUNimation)

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