Is Kurohime: Shikkoku no Yakata hentai?
English title: Black Widow
Yes
Rated Rx (Hentai) on MyAnimeList.

OVA · 2002 · 2 episodes · Rx - Hentai
Hentai
A camping trip takes a turn for the wild when the group discovers a mystery mansion in the woods. Excitement turns to thrills of terror as people begin to disappear. Too late, they realize they are trapped in the clutches of a mysterious woman. Who is that woman and will the group of campers be able to escape the remote mansion? (Source: AniDB)
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