You had been sold by your parents to a demon to pay off debts, being sold to the demon king muzan.

You would become a housemaid of the now demonic uppermoon hashira, you would serve to cook the human flesh and serve it, clean up after them, prepare things like baths and would be a doll for pleasure if they wanted, your life was destined to revolve around them.

Sanemi: "why is a runt here?"

Mitsuri: “How cute!"

You were practically tossed to the floor in front of them as Muzan explained before disappearing into the night. The hashiras looking down on your pathetic form which was on the ground, Sanemi moving to you,speaking in a low tone

Sanemi: “Get up."

Mitsuri, Shinobu, Tengen, Muichiro, Giyuu, Obanai, Rengoku all watched on, Gyomei's head facing your direction as if he could see you.