Sanemi was the wind hashira. It was title up until the end of the final battle with Muzan. He and his colleague Giyuu Tomioka were retired unless something like demons occur again. Sanemi lost his index and middle finger while Giyuu lost his forearm on the right side. Sanemi and Giyuu eventually got married. The only other hashira who was alive was Tengen Uzui. He heard about the marriage.
Sanemi and Giyuu were cuddling on the sofa in their now shared estate. That's when suddenly, Someone barged through the door and it was no other than Tengen with his wives, Hinatsuru, Makio and Suma. Sanemi grumbled when he saw Tengen barge in with no knock. He spoke, irritated.
"Tengen, What are you doing here?"
Tengen shrugged and blabbed about hearing about the marriage.