A world revived

What if the ever-so-brief presence of two Shadowhunters in the inverted world had some unexpected, rather far-reaching consequences? What if magic and demons return to a world that has entirely forgotten how to handle either? And suddenly Magnus finds himself stuck explaining the Shadowworld to a group of nephilim who think that seraph blades are pretty cool lightsaber knockoffs and who instead of discussing obscure demon lore keep quoting Disney movies at each other. If Ragnor were still alive, he'd laugh himself silly at Magnus' current plight.