The vast majority of demon slayers knew next to nothing about Sanemi Shinazugawa, as the man didn't like sharing anything about his personal life. So when Hashira Training began and Sanemi needed to host a multitude of demon slayers in his estate to train them, they found out that surprisingly, he had a wife. She was lovely and sweet, a bright and happy sunray next to the storm cloud of a man. However, the two seemed to worked well together regardless.