Arc 6The Missing Souls Expedition
Wang Xun balanced his Fourth Division duties with Urahara’s offer to investigate his Hollow power, then joined Aizen and Kiganjō on a mission to find missing Soul Reapers. He rescued Rangiku and returned with her to Seireitei, while Aizen began considering Wang Xun as a subject for his Hollowfication Experiment.
- Unohana advanced Wang Xun’s Kendō training, while Urahara showed him the improved spirit spring and offered to help him control his hidden Hollow power, and Wang Xun declined but decided to make cautious use of Urahara’s research.
- Wang Xun sparred with Soi Fon and continued training under Unohana, eventually cutting Unohana during their duel and earning instruction in the deeper Yachiru techniques.
- Unohana sent Wang Xun to investigate disappearances in Rukongai with Aizen and Kenpachi Kiganjō, where Gillian-level Hollows attacked their camp and Aizen used Kyōka Suigetsu to deceive the battlefield.
- Wang Xun concealed that he could perceive Aizen’s illusion, treated the wounded, and followed a faint Reiatsu to a hut where he found Gin Ichimaru caring for the gravely injured Rangiku.
- Wang Xun stabilized Rangiku with Double Kaidō, while Gin resolved to become a Soul Reaper and seek revenge on Aizen, and Wang Xun later urged Gin to join Shin'ō Academy, but Gin chose his own path.
- During the search, Kenpachi Zaraki and his companions encountered Kiganjō’s group, but Aizen used Kyōka Suigetsu to make the conflict disappear, and Wang Xun also gained Soul Splitting and reached lieutenant-level Spiritual Might.
- Wang Xun carried Rangiku back to camp and told Aizen she needed treatment from Unohana, while Aizen recognized her as the soul from whom the Soul King Fingertip had been extracted and considered Wang Xun for his next Hollowfication Experiment.