Is Bannou Bunka Neko-Musume DASH! hentai?
English title: All Purpose Cultural Cat Girl Nuku Nuku Dash!
No
Rated R (17+ (violence & profanity)) on MyAnimeList and not tagged as Hentai.

OVA · 1998 · 12 episodes · R - 17+ (violence & profanity)
Action, Comedy, Ecchi, Romance, Sci-Fi
It's in the not too distant future. One day Nuku-Nuku dropped in and began to live with the Natsume family. Having lost her memory, Nuku-Nuku assumed the identity of a beautiful girl named Atsuko Higuchi. She was so beautiful and gentle, and besides, she was such a great cook that Ryunosuke, 14, was all smiles. However, after her arrival in town, a series of mysterious incidents started to happen in Maneki City - Experimental machines running haywire, roaring fighter aircraft flying low, mass destruction in the city. In every case, a mysterious girl was spotted at the scene of the incident. (Source: AnimeNfo)
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