Is Crayon Shin-chan Movie 07: Bakuhatsu! Onsen Wakuwaku Daikessen hentai?
No
Rated G (All Ages) on MyAnimeList and not tagged as Hentai.

Movie · 1999 · 1 episodes · G - All Ages
Comedy, Ecchi, School, Seinen
The Nohara family and "Onsen G-Men", the secret government agency maintaining all the hot springs in Japan, fight against "Yuzame", a bath-hating terrorist organization plotting to wipe out all the hot springs in Japan. (Source: Manabu Tsuribe)
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