That's only if he loses the Reiji Maigo, with it he should exist indefinitely unless he uses all his power before the reset. I suspect that is what happened to Johann, in a very sad battle he used all the PoE he had to save Pheles and poof he was gone.

The drama is boring of course, but I make it entertaining for myself by predicting what sappy cliché will happen next. It's nowhere near enough to justify watching but it does help a little. I think 'something' will happen next p but I doubt any of the good guys will realize what's going on until the end of the episode, removing the chance for any action.