Is Chuumon no Ooi Ryouriten (1991) hentai?
No
Rated G (All Ages) on MyAnimeList and not tagged as Hentai.

Movie · 1 episodes · G - All Ages
Award Winning, Horror, Supernatural
A short film based on a story by Japanese writer Kenji Miyazawa. Two young British hunters get lost in the woods and discover a strange restaurant. Are the hunters about to discover how it feels to be the hunted? (Source: ANN)
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