Bleach

Season 1, Episode 253

Episode Title: Muramasa's True Identity Revealed

Air Date: 2010-01-12

Overview:

6th Division Captain Byakuya Kuchiki defeats Kōga Kuchiki as Muramasa loses control and transforms into a Hollow version of himself. As Ichigo Kurosaki battles Muramasa, several Shinigami and their Zanpakutō Spirits arrive to help.