13x6Clash! Hisagi vs. Kazeshin Episode Summary Aired: Tuesday September 1, 2009
Kyoraku and Ukitake discuss the possibility that defeating the zanpakutō spirits will destroy the zanpakutō themselves. Renji continues fighting with Zabimaru, who taunts him for his weakness. Hisagi fights with Kazeshini, and, disgusted by his desire to take life, plans on killing him even if he loses his zanpakutō. Ichigo's inner hollow fights with Muramasa inside his mind until Muramasa uses his powers to restrain him. Ichigo then steps up to fight, stating that the hollow is a part of him, too. Ichigo manages to force Muramasa outside of his mind and continues the fight with him there. When Zabimaru threatens to kill Rukia, Renji regains his resolve, and manages to activate Zabimaru's shikai.