RAKB-001 - Kinbaku Anatomy: Asuka Ryuzaki Chapter 1

It's hard to tell from the description or packaging, but the model being tied up is just a hairy man, and the only woman appearing is the rope artist, Asuka Ryuzaki. What exactly was the intent behind this DVD? I assume it's an instructional video on bondage, but focusing solely on tying up men is way too niche. For the first time in a while, I fast-forwarded through the whole thing in 5 minutes. The visuals are quite shocking. Well, I'm giving it a generous rating just for the shock of having seen something I would never choose to watch on my own.