"Byakuya, I've been locked up for so long, and you're still such an adorable tsundere~"
"You're a cripple sitting in a chair. Behave yourself and stop making trouble for everyone."
A reasonable inference, a bold assumption: the story starts before the Hogyoku appears. Isn't this pairing in the Arctic Circle? Fine, I'll make my own content.
Aizen x Kuchiki Byakuya, no role reversal, Byakuya is adored by everyone, melodrama galore, logic out the window. Historical accuracy fans, this isn't for you. Written for my own amusement. Read it or don't.
First, make sure you've heard the song "Coins": two sides, black and white, demon and angel, all decided in a single thought.
Theme: Making my own content for a rare pairing.
I once chased Lanbai in Tieba, and it was a cold CP.