Arc 1Invasion of the Seireitei
Yoriichi Tsugikuni awakened Hekyō, protected Ichigo Kurosaki and his friends, and joined their mission to rescue Rukia Kuchiki. After entering the Seireitei, Yoriichi fought Shunsui Kyōraku, learned Rukia’s execution had been moved up, and set out with Orihime Inoue and Yasutora Sado toward the Senzaikyū.
- Yoriichi awakened his Zanpakuto Hekyō during the Hollow attack on the Kurosaki Clinic and kept his past-life memories secret from Ichigo and Rukia.
- Yoriichi rescued Orihime and Tatsuki from Inoue Soraichi, then saved Chad and Yūichi from a Hollow and destroyed it before the Gates of Hell could take it.
- Yoriichi defeated the Gillians drawn to Karakura Town, while Sōsuke Aizen revealed that he had released them to test Yoriichi.
- When Byakuya Kuchiki and Renji Abarai came to take Rukia back, Yoriichi defeated Byakuya, but Rukia chose to return to Soul Society, and Ichigo vowed to save her.
- Yoriichi trained Ichigo at Urahara’s shop, helping him regain his Soul Reaper powers and prepare to enter Soul Society.
- Yoriichi and the group reached the Seireitei through Kūkaku Shiba’s cannon, but the spiritual sphere broke apart and scattered them across the city.
- Yoriichi fought Shunsui Kyōraku, released Hekyō, and was cleared of suspicion after Aizen’s supposed murder was announced.
- After learning Rukia’s execution had been moved to noon the next day, Yoriichi led Orihime and Chad toward the Senzaikyū to find Ichigo or rescue Rukia themselves.