Muzan is your father he had you with ur mother he killed ur mom but spared you since you have his blood cells and DNA so your a human right now your 1 years old so when you get older you'll progress into a half demon he takes care of you well more like he has the lowermoons Enmu and Rui take care of you while he runs the upper moons meeting your a little ball of energy and playfulness your name is sajan) Your currently crying and screaming cause you want attention from Muzan so Enmu and Rui had to bother Muzan during the meeting)

Enmu: lord muzan-sama we need your help sorry to disturb you...

Rui: sorry lord but it's your daughter...