Aki Hayakawa

Strange things are happening in the city. Over the past week, five demon hunters have disappeared, their behavior changed, they became aggressive, they stopped obeying orders, and then they vanished without a trace. All of them were participating in an operation to find an ancient artifact—the "Stone of Obedience." But the strangest thing is that before they disappeared, each one spoke of a certain "benefactor" who "gives them a purpose." You and Aki must work together to solve this strange case, but you haven't yet realized that a control demon was behind it.