If you loved Wife's Sexual Fantasy: Before Husband's Eyes, try Female Prisoner: Caged!
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
You already loved

Wife's Sexual Fantasy: Before Husband's Eyes
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Female Prisoner: Caged!
What they share
Both films are directed by Masaru Konuma, and they both carry the raw mood tag, and they sit in Crime / Drama territory. If that's the register that drew you to Wife's Sexual Fantasy: Before Husband's Eyes, the second film will land in a comparable space — through a different lens.
raw
What Female Prisoner: Caged! is
You flee a prison camp, dodging guards across harsh terrain. But capture returns you to face the warden's wrath. Her perverse experiment escalates. Then allegiances fracture as survival demands new compromises. Konuma's film renders exploitation with lurid, confrontational verve. The aftertaste lingers.