Is Tenchi Souzou Design-bu: Idea 13 hentai?
English title: Heaven's Design Team: Idea 13
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

Special · 2021 · 1 episodes · PG-13 - Teens 13 or older
Comedy, Educational, Fantasy, Gag Humor, Mythology, Seinen, Workplace
Hatching an original idea is not always easy for the Heaven's Design Team. With a meticulous client such as God, even the most confident of its members may doubt their ability to create a perfect creature that satisfies his demands. The whole team is then put to the test when God requests a single animal possessing five particular qualities. This strange animal may be one of the design team's biggest jobs yet! [Written by MAL Rewrite]
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