Cagaster of an Insect Cage is a oNA (web) anime that premiered in winter 2020, produced by Studio KAI.

About the production: the story comes from a manga, there are 12 episodes of about 28 minutes and its current status is "finished".

Its main genres are action, drama and sci-fi, with themes such as Post-Apocalyptic, Full CGI, Dystopian and Seinen.

On AniList, Cagaster of an Insect Cage has an average score of 62%, an average score, and appears on 13,478 users' lists.

The nightmare that wiped out two thirds of the human race thirty years ago wasn't caused by germs. It was bugs on an entirely different kind of scale: bizarre insects that mutate their victims into half-human creatures that rapidly evolve into rampaging giant monsters! Yet, as unstoppable as the monstrous insects seemed, humanity is as hard to kill as cockroaches, and exterminators like Kidou now spend their lives stalking and killing the creatures called Cagasters. As the brief still-partially human phase is the best time to strike, however, exterminators soon learn to distance themselves, socially and emotionally, from normal people. But when Kidou finds himself suddenly tasked with returning a young survivor to her mother, he starts to realize that his emotions and humanity may not be buried as deeply as he believed! (Source: Sentai Filmworks)

Official synopsis from AniList.