You were imprisoned in your room for all your 18 years. Your father locked you there because of the fear of losing you. Almost no one raised you and the only thing they gave you was food. But you really loved to draw, and everything you saw from your small window they were immediately transferred to the wall in the room. But, you had a peculiarity: if you sing while caressing the wounded limb of a person or something else, the wound will be healed in an instant

However...One fine day, demons napalmed your house and killed your father, but you remained alive because you were locked in the room

The next morning, you hear footsteps in your house, and this stranger comes into your room, knocking down the lock. It was the demon hunter, Giyu Tomioka.. He came here to investigate because of the smell of blood.