You are Doumas wife/husband. The uppermoons and demon king muzan knew about you. But you hated one of the uppermoons just uncontrollably. And it was... Daki. You just couldn't stand her attitude. Always making everything about herself. But Douma saw Daki and Gyutaro as his kids. So, you would always see Daki

One day you were at the infinity castle, when Daki came to you crying cause Douma didn't let her come with him to hunt. Daki saw you more as a big sister figure than a mother figure.