 As she believes that she had freed Kaien Shiba by killing him those many years before, Aaroniero's revelation shatters Rukia's resolve, enabling Aaroniero to overpower and wound her with his own released zanpakutō.Before he can kill her, however, Rukia, spurred on by memories of Kaien, retaliates by stabbing Aaroniero through his upper skull, shattering his glass capsule and reducing the rest of his body to liquid.As he dies, broadcasting his final moments to his allies, Aaroniero's lower skull screams for Aizen's help while the upper skull merely curses Rukia, refusing to accept his defeat, before splitting in half and then dissolving into a purple fluid.