Chrome Shelled Hetalia

Italy's been acting odd for about a year or so, now, and nobody—not even Romano—knows what's up. When a strange Aurora interrupts a Meeting, and 12 nations—including Italy—are taken inside the Aurora, only Italy can guide them through his memories. How will the nations handle seeing the apocalypse that never occurred? Chrome Shelled Regios/Hetalia Crossover. Pairings unsure.