Bleach, Volume 69 (Bleach #623-632)

With the death of Reio at the hands of the Quincy King Yhwach, the world starts to crumble. Soul Reaper Captain General Kyoraku enlists Aizen to help in the war against the Quincies, but is relying on a traitor a wise move? And as Ichigo heads toward Yhwach, he runs into an unexpected figure!