Description：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.
Description：A powerful creature claims that within a year, Earth will be destroyed by him, but he offers mankind a chance by becoming a homeroom teacher where he teaches his students about how to kill him. An assassination classroom begins.
Description：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.
