: To save Masaki, Isshin Shiba (the 10th Division Captain) agreed to be bound to her soul using a special Gigai. This required him to permanently sacrifice his Shinigami powers to act as a counterweight to the Hollow essence within her.
: As an "Echt" (pure-blood) Quincy, Masaki possessed powerful defensive abilities ( Blut Vene ) that would have easily defeated Grand Fisher. 12 : Everything But The Rain June Truth
: On that specific day, Yhwach (the Father of the Quincy) performed the "Auswählen" (Holy Selection). He forcibly stripped "impure" Quincy of their powers to restore his own strength. : To save Masaki, Isshin Shiba (the 10th
Following her battle with the Hollow known as "White," Masaki suffered from "Hollowfication," a process that threatened to destroy her soul. : On that specific day, Yhwach (the Father
Isshin reveals to Ichigo that Masaki should not have died during the encounter with the Hollow .
: Because she was infected by a Hollow, Yhwach deemed Masaki impure. Losing her powers mid-battle left her defenseless, leading to her death while protecting Ichigo. 3. Identity Revelations for Ichigo