After retiring from the Zero Division, Aizen came to study

Traveling through the world of Death, but the timeline is a little early.

After years of hard work, Xianye became a true strongman and was promoted to the Zero Division.

However, he did not stay in the Zero Division for too long. For some reasons, he chose to leave the Zero Division and retire.

Returning to the familiar Seireitei, Xianye prepares to enjoy his old age and enjoy his life after retirement.

Until one day, a young man came to him and asked him for advice.

The boy’s name is Aizen Soyousuke.

…

“Soyousuke, do you want to know the truth about this world and see its true face?”