Arc 6The Road to Aizen
Wu Biao faced Unohana Retsu, then carried out Hell’s work in Slope Town and helped Takeuchi Aya awaken. As Aizen’s decisive battle approached, Ichigo accepted both sides of his power, while Wu Biao prepared to risk the Kotsutotsu to grow strong enough to face Aizen.
- Wu Biao battled Unohana Retsu, who admitted defeat after he was knocked unconscious, then returned with him to the 4th Division.
- During his recovery, Wu Biao kept provoking Unohana and clashed with Hitsugaya Tōshirō and Hinamori Momo before Ichigo brought him back to the Human World.
- Wu Biao traveled to Slope Town and abandoned Takeuchi Sosuke to Kumakura Takashi, whose bullying and threats were tied to Sosuke’s guilt over Aya’s condition.
- Wu Biao returned to Aya’s hospital room to take her soul, but Sosuke fought to protect her, and Wu Biao revived Aya before burning away Kumakura Takashi.
- Wu Biao rescued Yayoi from a sinkhole and destroyed a golden barrier around an invisible sphere, allowing a ghostly figure to escape.
- Wu Biao reunited with the Kurosaki family as the Royal Guard arrived and announced that Aizen Sosuke’s decisive battle would begin in three days.
- Ichigo refused to abandon either White Ichigo or Old Man Zangetsu and chose to keep his current Zanpakuto.
- Wu Biao decided to enter the Kotsutotsu despite the danger of fatal temporal dislocation, and Urahara Kisuke agreed to help him prepare.