Bleach

A mysterious man named Muramasa appears to declare war against the Soul Reapers.

Rukia escapes to the World of the Living; a woman attacks Rukia and Ichigo.

Rukia searches for her brother.

Muramasa sends Sode no Shirayuki away, and Ichigo asks why he wanted the zanpakut to be independent.

Renji searches Byakuya, instead he is attacked by the two humanoid forms of Zabimaru.

Hisagi plans on killing his Zanpakut spirit; Renji continues fighting with Zabimaru.

Ichigo regains his Shikai, so he battles Muramasa.

Ichigo's and Renji's victories prove that a Soul Reaper can reclaim his Zanpakuto by defeating it.

Haineko and Tobiume spot Ichigo, who is in pursuit of Senbonzakura and Byakuya.

The battle of Rangiku and Momo vs. Haineko and Tobiume heats up.

An experiment shows that a manifested Zanpakuto cannot revert to its original state.

The Court Guard Squads are shocked by news of Byakuya.

Renji and Rukia want to know why Byakuya has betrayed the Soul Society.