Arc 4The Hōgyoku War
Xuanxin tried to stop Aizen’s plans while protecting Rukia and confronting the dangers spreading between Soul Society and the World of the Living. After Aizen escaped to Hueco Mundo with the Hōgyoku, Xuanxin prepared an expedition there and summoned Ichigo and his friends to Soul Society.
- Yamamoto appointed Xuanxin to lead the 11th and Second Divisions and the Stealth Force, while Gin Ichimaru secretly told him that Kaname Tōsen had stabbed Captain Muguruma.
- Kenpachi Zaraki challenged Shihoin Genshin for the 11th Division captaincy, lost, and later took the position after Genshin invited him to grow stronger.
- Xuanxin helped Byakuya save Hisana and met Rukia, then learned of her execution sentence and began preparing for conflict as Ichigo and his friends entered Soul Society.
- Yoruichi revealed that Urahara had hidden an imitation Hōgyoku in Rukia, while Xuanxin suspected Aizen and took temporary command of the Gotei 13 with Shunsui.
- Aizen revealed himself during Rukia’s execution, but Xuanxin and his allies failed to stop him from escaping with the Hōgyoku after he defeated them and summoned Hollows across Seireitei.
- Xuanxin established a base in the World of the Living, where Kūgo Ginjō appeared with a Hōgyoku and Yammy later attacked, and Aizen ultimately escaped through the Garganta with the Hōgyoku.
- Xuanxin returned to Soul Society and proposed an early counterattack on Hueco Mundo, then summoned Ichigo and his friends after Kurotsuchi’s experiment delayed the expedition.