Mushikago no Cagaster
English name: Cagaster of an Insect Cage
Genres: Action, Drama, Sci-Fi
Type: ONA, Episodes: 12
Aired: Feb 6, 2020
Studio: Studio Kai
Source: Manga
Rating: R - 17+ (violence & profanity)
Synopsis:
In a near future, an illness called "Cagaster" made ​​its appearance. It turns humans into insects. The story begins 30 years after the onset of the illness, in 2125. It follows the adventures of Kidou, a boy who fights insects.

(Source: MAL News)