Note to the writers; whenever you throw a whole bunch of random stuff into the first episode, then either the second needs to level off and play it straight, or start providing explanations in order to untangle the first episode. Throwing in even more random crap and covering it with fanservice will make folks think you don’t have much of a plan after all.
The world will have been destroyed in 719 days.
Mmmmm, okay. But now I’m certain that Misao, the ghost, knows what’s going on. I’m getting vibes that this might have a “save the world by resetting it” schtick going on, like in Magikano.