Chihira Mochida

The distant future, 5012. The sudden aerial invasion of Earth by ＜Aliens＞ and their creations ＜Machine Lifeforms＞ led mankind to the brink of extinction. The surviving number of humans who took refuge on the moon to organize a counterattack using ＜android＞ soldiers to recapture Earth. However, the war reaches a stalemate as the ＜Machine Lifeforms＞ continue to multiply infinitely. In turn, humanity deploys anew unit of android soldiers as an ultimate weapon: ＜YoRHa＞ Newly dispatched to Earth ＜2B＞ joins ＜9S＞, the analyst currently stationed there, where amid their mission, they encounter a myriad of mysterious phenomena... This is the story of these lifeless ＜androids＞ and their endless fight for the sake of mankind.

Five years after a mystifying disaster decimates cities across the globe, Seria Morino receives an invitation to join Alice in Theater, a small stage troupe that takes it upon themselves to brighten the world through their performances.

The story begins with the peaceful daily life of schoolgirls—which suddenly breaks down when former schoolmates become zombies. The story follows the actions taken by the girls left behind on the school roof.