If you loved Flower and Snake 4: White Uniform Rope Slave, try Angel Guts: Red Vertigo
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

Flower and Snake 4: White Uniform Rope Slave
→
Try this next

Angel Guts: Red Vertigo
What they share
Theyboth carry the sexy mood tag, and they sit in Drama / Horror / Thriller territory. If that's the register that drew you to Flower and Snake 4: White Uniform Rope Slave, the second film will land in a comparable space — through a different lens.
sexy
What Angel Guts: Red Vertigo is
Wet pavement in Shinjuku, winter midnight, the scream cut short by metal. A nurse flees a bare apartment, only to be lifted into a stranger’s car and locked inside. A neon-soaked nightmare that Kubrick could have storyboarded if he’d done yakuza porn.