Hataraku Saibou Black CM
English name: Cells at Work [Black]
Genres: Action
Type: ONA, Episodes: 1
Aired: Jan 4, 2020
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
A special animated commercial first released on Twitter to promote the manga. It was then released on Kodansha's official YouTube channel on January 15.

Set inside an unhealthy body, Hataraku Saibou Black features the anthropomorphized cells of the human immune system as they attempt to keep their ailing world alive.