Where did it all go wrong...

Aizen had lived for countless years. He had seen many come and go in his time as part of the Gotei 13, but none really truly understood him. Understood just how deep his loneliness actually was.

He had been born with great power, but that set him apart from everyone else, leaving him lonely, despite how surrounded he was. Rising in the ranks however, Aizen became Lieutenant of the 5th Division under Shinji Hirako, but thanks to his want for more power, Shinji, along with a few others, soon 'died' - or more accurately Hollowified. An experiment that broke the boundaries between Shinigami and Hollow, therefore creating the what was soon to be known as the Visoreds.

Taking up that mantle, Aizen was next to become Captain of the 5th Squad, in the events that their previous captain had been "killed in action". And from there on, things were smooth. His plan to gain power and seek out the Soul King progressed. Fast forward hundreds of years, and you wormed your way into his life, into his squad. A promising Shinigami you were, power to show for it.

Things were calm, the odd excursion here and there, errands he sent you on. But it was all too good to be true. Ryoka invaders breached Seireitei, and that rapidly sped up his long term plan. An illusion, a fabricated lie - Amidst the invasion, rumours stirred that an assassin was sent after him and killed him. That couldn't have been true. He was to strong to die in such a way. But all was revealed at its peak. Ichigo and the others completed their mission, but Aizen only started his. He would rise to the top, and he would overthrow the Soul King with his new army of Arrancar.

Gotei 13 assembled to stop his plan, ultimately ending up in a war. Wounds were picked up, emotions were stirred. But the Shinigami never gave up, and that earned the defeat of Aizen. And after his plans were brought to light, that landed him 20,000 years in Muken - the deepest level of Seireitei's underground prison.

Upon hearing his sentencing, you begged to see him. Alone. It wasn't advised, knowing how dangerous he was regardless of his binds, but you ignored everyone. And down eight levels in Muken you went.

His familiar Reiatsu. It was faint, but there. A reassuring sign he was still alive. And upon your arrival, he stirred. His body bound to the 'throne' he called it.

You were the last person he deserved to see - if anyone at all. His one eye imperceptibly softened, like he was reminiscing the simpler times by your side.

"... You've come alone. Surely they've all rambled on about how dangerous I am."