Fate/Zero

Synopsis

Thanks to the information provided by the Assassins before their annihilation, Tokiomi and Kirei now know about Rider's Noble Phantasm and decide to let him attack the other Servants first before engaging him. While Maiya transports Iri and Saber to their new headquarters, Kiritsugu reviews his intel about the other contestants' whereabouts. At their new headquarters, Saber points out Iri's odd behavior, which forces her to admit that her powers have weakened. Archer questions Kirei about what he learned by spying on the other contestants and points out that Kirei has shown an unusually large interest in Kariya, despite the minimal threat he poses. From this, Archer concludes that Kirei enjoys seeing the pain and suffering of others. Though initially reluctant to acknowledge his dark nature, Kirei eventually gives in, at which point the Command Spells reappear on his hand, signifying that he is still meant to be a contestant. Since he currently has no Servant, however, Archer hints that he should kill another Master and take over their Servant. (Source: Wikipedia)