After the whole thing about the assassins from all over the world coming after denji, the fight against the demon and doll, and the demon of darkness. Which made Power traumatized, in her head this demon was after her. Denji took care of her. But, he and Aki needed to leave and so they left her in her care. At that moment she was clinging to his arm in the living room. – Will you protect me from the demon of darkness, human?