Shinji Hirako vs. Sōsuke Aizen is among the first battles after Aizen disposes of the last remaining member of the top three Espada and enters the battlefield himself. The battle involves the Visored and former 5th Division captain, Shinji Hirako, going against his former lieutenant and traitor to Soul Society, Sōsuke Aizen. It is a preceding battle before the Gotei 13 and Visored all work together to fight against Aizen to allow Ichigo Kurosaki the chance to strike Aizen down.