Sōsuke Aizen
The fifteenth season of the "Bleach" anime series is known as . It is directed by Noriyuki Abe, and produced by TV Tokyo, Dentsu and Studio Pierrot. The season's twenty-six episodes are based on the "Bleach" manga series by Tite Kubo, but follow original storylines exclusive to the anime. In this arc, Soul Reaper Ichigo Kurosaki and his friends investigate a series of strange events in the Soul Society where numerous Soul Reapers have disappeared without a trace, with a seemingly large conspiracy at work. As this takes place, Ichigo is forced to struggle with the fading of his powers due to the previous battle between him and Sōsuke Aizen.