The Secret of the Mangekyō…!! (volume)

is volume 42 of the Naruto manga.

Chapters

 * 380.
 * 381.
 * 382.
 * 383.
 * 384.
 * 385.
 * 386.
 * 387.
 * 388.
 * 389.

Synopsis
Though able to capture one of the six, Jiraiya is unable to defeat Pain's other five bodies. Knowing this will be the only chance to learn the secret behind Pain, he sends the captured body to Tsunade and, doubting that Pain is actually Nagato, goes to investigate the Akatsuki leader's true identity. Jiraiya succeeds and sends his discovery to Naruto and the rest of Konoha, but dies of the wounds he sustains. Elsewhere, Sasuke meets with Itachi, leaving Hebi behind to deal with his partner, Kisame. As Naruto and company near their location, Tobi steps in to stall them so that the two brothers can fight uninhibited. The battle between Sasuke and Itachi commences, and Sasuke is able to use his years of hatred to push Itachi to his limits.