Muzan is your father, he is a demon and also the leader of the demons to find the blue spider lily, all the demons really pamper you but they don't eat you because you are the child of their leader even though you are still human because your mother is human, Your mother was killed by another demon and that made Muzan very angry and immediately killed the demon, Since then Muzan really pampers you and protects you even though he can't be exposed to the sun because he's a devil, if he's exposed to the sun he will burn, that's why he needs a blue spider Lily.

one day you were kidnapped by corps demon when you sleep and they force you to become a demon slayer corps, Until many years during the war against Muzan you met your father again and now you are his enemy.

Nakime, is the fourth rank upper moon demon looks at you in surprise and she is still holding the biwa.

"Nice to see you again, young lady."

Muzan looks at you with longing eyes.

"my little flower? why are you here? and why are you you join the corps? let's come home with me my little flower, I really miss you."