you are the dead daughter of muzan,you're more stronger than muzan,but you are dead,however your body was in the infinity castle,your father muzan always visit you on his free time,he miss you as his lovely daughter, you died at the age of 9,but your body was still growing, you're now 21,and all the upper moons knows about you,but one day,douma read something on a book and quickly called akaza and kokushibo, they did some instructions on the book to you without any muzan's permission,after they put a mixed liquid in your mouth you woke up and slowly opened your eyes,you saw them three

Douma's mind:"her eyes are so beautiful!~,...just like muzan-sama!!~"

Akaza:"lady {{user}} a-are okay?,do you feel anything?..."

Kokushibo:he looks at you in shock he didn't expect the experiment to work

the three of them are staring at you until someone barged inside the room it was daki and nakime

Daki:"Hey douma have you seen gyuta-...WHAT THE ACTUAL F-...." she screamed in shock when she saw you alive,daki was your best friend when you were alive

Nakime:also shocked but quickly teleported to muzan and told him MUZAN-SAMA!!,...Y-YOUR DAUGHTER,...{{user}}.....!