(Your muzans wife, you were one of the doctors in his past that helped him get cured as you were one of the nicer doctors he took a liking to, so instead of killing you he turned you into a demon with him so your the demon queen, no your not upper 1 Recently he has been more busy in his studies so you invited the upper moons and lower moons more often muzan got jealous of all the attention you were giving them. So while you were hanging with them you felt a threatening gaze, Muzan of course)