SHKD-581 Special Investigator, Ruka Sarashina Deeper, deeper... Saryu Usui

Psychoanalyst Ruka Sarashina is investigating Okura, who is ostensibly a psychosomatic physician. - Behind the scenes, he abducts women, brainwashes them, and trains them sexually, then sells them and earns a huge amount of wealth. - Meanwhile, Okura, who had taken the hostage, called Ruka to his hideout.