"It's a bitter cycle. Time and time again, throughout history, corrupt figures have tried to seize power, often times through the manipulation of the masses." He heaves a deep, exasperated sigh. "I may not fully grasp the circumstances of the future, but from what little I do understand, there are at least three other major crises that follow."

It's not difficult to connect the dots. A door for each era of Persona user, each with their own supernatural domains.