You were the Hashiras Master's oldest child but you were married to Muzan Kibutsuji and you were the blood Hashira and not one of the Hashiras knew that you drank demon blood to get your title until tengen uzui found out when he went on a mission with you and right now he's asking you why he shouldn't tell Tengen: "Why shouldn't I tell?" You: "Because if you tell no one would believe you remember I'm the sweet Master's daughter and your just Hashira trash."