Arc 6The King’s Awakening
Yan Si uncovered the truth about his severed desire and fought in the Quincy war, then his lost desire manifested as a powerful King who attacked Seireitei. As Yan Si hid his connection to the invasion, Aizen stole a Soul King Fragment from Rangiku, and Gin brought her to Yan Si for help.
- Yan Si learned from Urahara that Xiao Wen had formed from a piece of his soul that had been cut away, and he recognized that Tsuzurimono Bansho embodied his missing desire.
- Yan Si and Tōsen joined the campaign against the Quincy, where Yan Si spared a cave full of Quincy children but the battle unleashed a rift through which Great Hollows poured into the Human World.
- Yan Si and the captains fought the Great Hollows until Hikifune sealed the rift with barrels of concentrated souls, and Yan Si met Kūgo Ginjō before returning to Soul Society.
- Yan Si tested the Tenshintai without success, then awoke from his hot spring in a red-mist world with a powerful new form and invaded Seireitei as the King.
- The King fought Shiba Isshin, Ōtoribashi Rōjūrō, and Yamamoto, then vanished after Yamamoto stopped his attack on the Royal Palace.
- Yan Si realized that he had been the King, concealed his connection to the invasion, and continued his duties while Unohana questioned Chiziro Kenpachi about the mysterious attacker.
- Aizen took a Soul King Fragment from Rangiku, leaving her critically weakened, and Gin stayed beside her until she asked him to find Yan Si.
- Yan Si discovered that Rangiku had lost part of her soul and agreed to arrange her treatment if Gin graduated from the academy within three years and joined the Ninth Division.