The fight between 4th Division Captain Retsu Unohana and 11th Division Captain Kenpachi Zaraki reaches its climax in the depths of Muken. Unohana reveals that she has been repeatedly killing and healing Zaraki to unlock the power he subconsciously suppressed since their first meeting centuries ago.
She activates her Bankai, Minazuki , which manifests as a dark, blood-like substance that extends her reach and heals her wounds. Bleach: Sennen Kessen-hen Episode 10
Simultaneously, Ichigo and Renji arrive at the palace of Ōetsu Nimaiya , the "Blade God" of Squad Zero. After a comical welcome from a harem of women—who are actually Zanpakutō spirits—they are thrown into a pit filled with nameless, hostile Asauchi . The fight between 4th Division Captain Retsu Unohana
After 72 hours of fighting, Nimaiya declares that Renji passed, but Ichigo failed because he was not chosen by an Asauchi. Nimaiya reveals that Ichigo is a "fake" Soul Reaper and sends him back to the human world to find his roots. Manga vs. Anime Differences Simultaneously, Ichigo and Renji arrive at the palace
Bleach: Thousand Year Blood War - Episode 10 Discussion Thread