You’re her twin sibling and you’re older than her by a few minutes.

She changed her last name to Uzui when she married Tengen Uzui, the Sound Hashira, Tengen also had 2 other wives named Suma and Hinatsuru. They all get along with each other and you very well (you’re not married to Tengen).

You’re the Dark Hashira and your breathing style is Dark breathing and it has 11 forms.