|Affiliation||Gotei 13, Soul Society, Kuchiki Family|
|Position||Captain of the 6th Division|
28th Head of the Kuchiki Family
|Previous Partner||Ginjiro Shirogane|
|Base of Operations||6th Division HQ, Kuchiki Manor, Soul Society|
|Relatives||Ginrei Kuchiki (grandfather, deceased)|
Sojun Kuchiki (father, deceased)
Hisana Kuchiki (wife, deceased)
Rukia Kuchiki (sister-in-law/adoptive sister)
Byakuya attended the captains' meeting to discuss a mysterious shape-shifter who apparently fought for Sosuke Aizen. The meeting was interrupted by Professor Paradox, who explained that the shape-shifter was a human named Ben Tennyson and that he had been sent to Hueco Mundo as an infiltrator into Aizen's forces in order to turn the latter's servants against him. Like most of the captains, Byakuya was skeptical of Ben's competence at such a task, but Paradox convinced him to give Ben the benefit of the doubt.
Invasion of Las NochesEdit
Byakuya likely arrived at Las Noches with Paradox's help, but separated himself from the other Shinigami for reasons known only to himself. Soon after his arrival, Byakuya confronts Septima (Seventh) Espada Zommari Leroux and slays him in battle, though this is not actually shown or mentioned until later on.
Battle with YammyEdit
Arrival at Fake Karakura TownEdit
Byakuya reluctantly attends the beach party celebrating Aizen's defeat. He participates in the sand castle contest, demonstrating that he shares Rukia's lack of artistic talent. Ben uses Water Hazard to destroy the sculpture, which angers Byakuya.