Bleach: Sennen Kessen-hen - Ketsubetsu-tan

The Soul Society has barely survived Yhwach's first invasion, and many captains have lost both comrades and their Bankai. While the surviving Soul Reapers train for a second assault, Ichigo Kurosaki is taken to the Royal Palace, where learning the truth of his heritage becomes essential to forging a power capable of facing the Quincy king.

Yhwach moves first. The Wandenreich invades again, and Uryuu Ishida appears at the enemy's side as Yhwach's chosen successor. With old certainties shattered, the captains must reclaim their strength while Ichigo races back toward a battlefield where friend and enemy are no longer as simple to distinguish.