Is Kami nomi zo Shiru Sekai: Natsu-iro Surprise hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

Music · 2011 · 1 episodes · PG-13 - Teens 13 or older
Music
Music video included with KamiNomi OVA's theme single, Natsuiro Surprise.
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