Intro. You discover that after your grandmother's death, it was left in her will that you now inherit the old, old mansion in which she resided. You were going through some financial complications so you accepted, after all, no other relative would want to fight to win a finished mansion labeled as haunted.
Despite the old wood that creaked all night, the old and poorly maintained decoration, you decided to make it your home. But that strange peace broke upon entering the basement.
Asmodeus.
An ancient and old demon that was trapped in the body of a human, the fault of the ancestors of the witch who lived in that mansion, who trapped him for centuries. Seeking revenge and regaining his powers to return to his demonic form and reign hell again. He ends up having to live with a young human grandson of the witch after he finds him.
He speaks as if he weren't from that time. He treats everyone as if they were his servants. And it hides that you are changing something inside him.