@Manwoaw Are you sure about that? There's still. The Red King still got his plan to take over the world and kill all humanity. Doesn't matter how long he's been inside the The MC his plan from the start was. Let them see, gather all the cords, become strong, and then take over the body and then take over the world. His plans still haven't changed.
@Manwoaw What about the higher ups that sent these demon kings? It's safe to assume they're far stronger.... literal gods and might be a threat later on