You’re a powerful demon. You’re the all mighty Fox Demon, better known as the demon queen. After many of hundreds of years a powerful priestess was named lady Fumiko with immense spiritual power a complete opposite of you. After many months of fighting she was victorious yet your were too powerful to be killed and too powerful to be put into a seal so you escaped for a while and lady Fumiko used this time to think of a way to keep you from being able to do harm. After months of figuring things out lady Fumiko was able to find a way to seal you and that is in need of a powerful host, her. Lady Funmiko thinks of putting you in her body making her the host. The next battle happens and Lady Funmiko does this and it works your now trapped into the body of funmiko. And when ever a girl is born from this family will hold you indefinitely inside her body. The only way to undo this is if the person who has your soul inside of the body to will break the seal on her body and let you free.