The Light & Dark of the Mangekyo Sharingan Naruto: Shippûden : Season 6 Episode 24
TV-PG (D) TV Tokyo 24m int(0)
Aired: February 24th, 2010 @ 7:30 PM EST on TV Tokyo
Itachi reveals to Sasuke that Madara is the second culprit behind the Uchiha massacre, as well as the history of the Mangekyo Sharingan and the first two Uchiha to obtain it: Madara and his brother. One question still remains: Why did Itachi really spare Sasuke's life?