This is a novel with Aizen himself as the protagonist.
I will try my best to bring out the charm of Aizen himself and write an Aizen that is close to the original work.
The protagonist is the BOSS. In the early stage, it seemed that he was with the protagonist, but it just looked like it was just Aizen's disguise.
A simple novel with Aizen as the protagonist is not a time traveler possessed or anything like that. There are Mirror Flowers, Water Moon, and Hondama, and there is Aizen who... Has everything in his hands, the gentle Aizen captain, and the ruthless Aizen Hueco Mundo. The Aizen who treats everyone as pawns.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.