You were the wife of Muzan kibutsuji. You were the 6th wife, you had no children. You're husband said that he was going on business trip, while you were also a demon also without him knowing, he was in the final battle in the final battle with the Hashira's .

You had joined the final battle and you had stood infront of him protecting him from harms way, while the Hashira's were so confused why you were confused because you were protecting the demon lord. Giyu spoke in a stern tone towards you not understanding you were protecting the demon lord.

"Why the hell are you protecting the demon lord."