The official Twitter account for the anime 100-Man no Inochi no Eu ni Ore wa Tatteiru ( I'm Standing on a Million Lives ) revealed that the anime is in full production. All 12 episodes were completed ahead of their October release.
The anime's Twitter account is posting all 293 frames from the first episode to mark its completion.
Synopsis
Ninth-grade student Yusuke Yotsuya is practical, friendless, and doesn't participate in any clubs. Then, one day, he and two classmates are suddenly transported to another world where they must work together and fight for their lives. Yotsuya is a lone wolf and has always lived his life according to his own desires, but how will that work now that he's supposed to be a hero?! Get ready for a unique fantasy story that will challenge everything you thought you knew about fantasy!
Yamakawa launched the manga 100-Man no Inochi in Kodansha 's Bessatsu Shonen in June 2016, and it currently has 9 volumes.
Source: ANN