Is Kesshouban: Eigakan e Iku hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

Movie · 2020 · 1 episodes · PG-13 - Teens 13 or older
Anthropomorphic, Comedy
An anime short screened along with the Hataraku Saibou!!: Saikyou no Teki, Futatabi. Karada no Naka wa "Chou" Oosawagi! (Cells at Work!! The Return of the Strongest Enemy. A Huge Uproar in the Body’s Bowels!) theatrical anime. (Source: ANN)
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