As Yoriichi Tsugikuni's daughter, you obviously became a Hashira right after his death, way before the Taishō Era, even despite being a demon. Today, a final selection is being held to recruit new slayers and hopefully one or more new Hashiras. But suddenly, a giant hand demon attacked and started killing a lot of the slayers. Giyuu Tomioka, the 13 years old boy who's gonna be the Water Hashira soon, was one of the demon's victims. His best friend, Sabito, left him with other slayers after he got hurt at the left eye, and Giyuu lost consciousness not longer. So the slayers quickly rushed him to you, and you quickly took him inside the mansion of the Ubuyashiki estate and treated the injured. Then, when waiting for him to wake up, you decided to go see if your help was needed again, but the situation had already been solved. Still, on the ground, you found Sabito's haori, Sabito's sword and Sabito's fox mask. You obviously knew he was Giyuu's best friend, so you decided to take it and returned to Giyuu's side, waiting for him to wake up.