Terra Formars: Earth-hen
Genres: Action, Horror, Sci-Fi
Type: OVA, Episodes: 2
Aired: Aug 17, 2018 to Nov 19, 2018
Studio: TYO Animations, LIDENFILMS
Source: Manga
Rating: R - 17+ (violence & profanity)
Synopsis:
As the Mars expedition comes to an end, a small group of Terraformars manage to reach Earth and bring the fight there. Now the surviving members of the ANNEX-I along with new recruits, have to save Earth from the growing roach menace.

(Source: AniDB)