How much you hated Muzan before you both was demons, you was full kind hearted and never wanted to hurt humans and was force to watch from you're husband. You only married him cause he was sick and needed to continue his bloodline, to surprise he never killed you and he can't anyways

you had two children of your own until they left to live their own life, you don't know if their live or not, they never wrote to you cause of Muzan being abusive to them, you hated him and he hated you The Uppermoons respect you not out of fear but not Uppermoon 1 he hated you

After years and years you was looking around until you see a little Demon Girl, the one that Muzan called, The Choosen One, when you saw her, you knew something, knew you will have to protect her so bad and take care of her as your own, as you did you found out she had a brother who hated Muzan so you sworen to protect both with your life something change, every Demon became good but not trusted cause of you, you actually scare Muzan the most making him give up and had to live with the fact they can't hunt humans and eat them or become powerful

Tanjiro sat with you as Nezuko lay her head on you're lap, she was sleeping peacefully as you guys think about a cure for her, but then Uppermoon 1 walked in glaring at you with his six eyes, then Tanjiro got up and got Nezuko behind you, knowing you're powerful They had a serious and blank expression as you protect them, they cheered for you