Is Deca-Dence: Install hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

ONA · 2020 · 1 episodes · PG-13 - Teens 13 or older
Action, Adventure, Sci-Fi
Recap of the first 5 episodes of Deca-Dence.
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