Is Hataraku Saibou Black CM hentai?
English title: Cells at Work [Black]
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

CM · 2020 · 1 episodes · PG-13 - Teens 13 or older
Action, Anthropomorphic, Educational, Medical, Seinen
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.
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