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

PV · 2015 · 1 episodes · PG-13 - Teens 13 or older
Music
Trailer for a fake crossover anime created by Shaft as an April Fools' Day joke, celebrating their 40th anniversary.
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