Bleach: Sennen Kessen-hen - Kashin-tan

Yhwach reaches the Royal Palace after breaking Squad Zero's defenses and manipulates Ichigo Kurosaki into delivering the blow that brings down the Soul King. With the king's death, the Three Worlds begin collapsing, distortions spreading through the Soul Society, the human world, and Hueco Mundo as the Wandenreich transforms the palace into Wahr Welt.

The Thirteen Court Guard Squads gather what strength remains and advance on the palace beside allies who would once have been unthinkable. The Quincy elite wait inside Wahr Welt, turning every encounter into a battle for survival. Ichigo, meanwhile, learns the truth behind Uryu's intentions and finds a renewed reason to fight beside him rather than against him. With Yhwach surpassing even the limits of The Almighty, the final struggle becomes a race to save the worlds before the boundaries holding existence together disappear.