Bleach Episode 61: Aizen Stands! Horrible Ambitions
Episode 61 of 366 of Bleach, aired December 13, 2005, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Unohana Retsu, Captain of the 4th division, and her vice captain Kotetsu Isane tell the others in the Soul Society what they had just learned about Aizen. Upon hearing the message, Ichigo realizes that Aizen wants to kill Rukia. Can he save her?