The Possessed Villainess Wreaks Havoc

A demon from the underworld possessing a human?! Bella, the demon and monarch of the underworld, is possessed by the villainess Isabella Dunkeld, hated by her family and pointed at by everyone as a villainess. 'How did I end up in this body?' She has no memory of making a contract with the human Isabella, and when she came to, she was trapped in Isabella's body with all her powers sealed. She decides to act like a 'human' for the time being, but.. *"So how many people have I killed with these hands? Hundreds? Thousands?" "Huh.. You didn't kill a single person?" "You're calling me a villainess when you didn't kill a single person?"* The demon Bella really finds humans difficult.. (Source: Kakaopage, translated)