Is Trinity Seven: Nanatsu no Taizai to Nana Madoushi hentai?
English title: Trinity Seven OVA
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

OVA · 2015 · 1 episodes · PG-13 - Teens 13 or older
Action, Comedy, Ecchi, Fantasy, Harem, Romance, School, Shounen
Arata is set to be expelled! The only way to save himself is to be taught more about the magic archives from the Trinity Seven themselves.
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