Bleach: Season 7, Episode 5
Civil War in Hueco Mondo! Ulquiorra's Death (8 Aug. 2007)
Trouble is brewing in Las Noches, Aizen's palace in the Hollow realm, Hueco Mundo. One of the Arrancars, Patras, rebels against Aizen and tries to steal the Hogyoku.
Writer:Jessica Renslow (translation)