| Season Number: | 4 |
| Bgcolour: |
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| Num Episodes: | 28 |
| Network: | TV Tokyo |
| Episode List: | List of Bleach episodes |
The fourth season of the Bleach anime series was directed by Noriyuki Abe and produced by Studio Pierrot. Like the rest of the series, the season follows the adventures of Ichigo Kurosaki and company, but instead of adapting content from Tite Kubo's Bleach manga series, it features an original, self-contained filler story arc. The twenty-eight episodes form the, which focuses on the introduction of the Bount, a race of humans that consume human souls to extend their lives, and their conflicts with Ichigo Kurosaki and his allies.
The season aired from January to August 2006 on TV Tokyo. The English adaptation of the season aired on Cartoon Network's Adult Swim in the United States from May to December 2008. Seven DVD compilations, each containing four episodes of the season, were released by Aniplex between May 24 to December 20, 2006. Viz Media released the season on seventeen DVDs from May 12 to November 17, 2009. Each of them contain four episodes in both English and Japanese languages. Two DVD box sets collecting the entire season were released on November 3, 2009, and February 16, 2010. Manga Entertainment released the season in three DVDs for the United Kingdom from October 26, 2009, to June 7, 2010, while a box set was released on August 9, 2010.
The episodes use five pieces of theme music: two opening themes and three ending themes. The opening theme for the first eleven episodes is by High and Mighty Color; the rest of the episodes use "Tonight, Tonight, Tonight" by Beat Crusaders. The first ending theme is by SunSet Swish, switching at episode 75 to "Hanabi" by Ikimonogakari and switching at episode 87 to "Movin!!" by Takacha.
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