Bleach the Movie: Fade to Black.

A strange disturbance in the World of the Living sends Ichigo and Kon to the Soul Society, where the Seireitei has been devastated by an explosion of reishi and Rukia is missing. Stranger still, none of the Soul Reapers remember Ichigo, and they think he’s the one responsible for the destruction. Now on the run, Ichigo is forced into a lonely battle in order to find Rukia and stop the real culprits!