For Aizen,
In addition to the conspiracy that started during the 101 incident,
The battle of wits with Urahara
The grudge against the Masked Legion
Taking care of Ichigo every step of the way
Disdain for Central Room 46
What else do we know?
His elegance, his strength, his wisdom, his scheming, his gentleness, his pride, everything about him, we have no way of knowing.
So, let's go back 170 years before the story happened,
See how Aizen realizes that sentence:
"No one stood in heaven from the beginning."
Aizen is the emperor
And she, Aizen's former captain, lover, and friend
He is the master of the emperor.
Conception:
