Impossible to Attack? The Sealed Genryusai!

After defeating his oncoming opponents, Aizen stabs Yamamoto who then creates pillars of flames to trap him, which will kill not only Aizen, but everyone else in the process. However, Wonderweiss appears and extinguishes Yamamoto's flames, revealing himself to have the ability to nullify Ryuujin Jakka. Yamamoto and Wonderweiss engage in unarmed combat, in which the former shatters the latter's body to pieces using hand-to-hand techniques. As Yamamoto stands before Aizen again, Wonderweiss unleashes the flames sealed in his body as he dies. Yamamoto uses his body to minimize the damage the explosion causes. Aizen approaches the immobile Yamamoto and prepares to finish him off, but Yamamoto uses his body as a catalyst for his Ittou Kasou, the forbidden kidou spell of sacrifice, and catches Aizen in the ensuing explosion. As Aizen manages to get away relatively unscathed, Ichigo attacks him.