Sui-Feng, Surrounding the Zanpakuto

Ichigo reports his findings of Muramasa's abilities to Ukitake, Kyouraku and Retsu Unohana. In order to find out about Muramasa's effects on zanpakutou, Ichigo and Ikkaku Madarame patrol the Seireitei to seek out the entities. Meanwhile, someone breaks into a compound and knocks out the Soul Reapers guarding the area. Marechiyo Oomaeda stumbles on the unconscious guards and investigate, only to encounter his zanpakutou spirit, Gegetsuburi, and Ikkaku's zanpakutou spirit, Houzukimaru. Oomaeda and Gegetsuburi are just about to fight when Ichigo and Ikkaku interrupt. Oomaeda is knocked out of the fight, leaving Ichigo to battle Gegetsuburi, while Ikkaku fights Houzukimaru. Ichigo defeats Gegetsuburi but Ikkaku is wounded by Houzukimaru's bankai. Just as he attempts to continue the battle, Ukitake, Kyouraku and Soi Fon arrive to surround Houzukimaru, but he uses his bankai to get away. However, they manage to obtain Gegetsuburi. Ichigo goes after Houzukimaru, but the entity escapes when Senbonzakura's petals block Ichigo's route. Ichigo discovers that the attack was from Byakuya, who disappears.