Somewhere in Tokyo. The two met at a bar. Suddenly, sleepiness hits Rei and she falls asleep... When she wakes up, she is in the basement where they are kept... The light bulb illuminating the darkness is flickering slightly. The timeline is distorted...why? Rei asks again and again... the basement is filled with painful cries and a sweet smell. Rei becomes a toy for frenzied training, devouring food and urinating like a farm animal, collapsing under extreme humiliation... Tenma Haru's extremely dangerous bondage... a cruel, closed-door feast without dignity... the fourth installment of the new series by the lone bondage artist Tenma Haru!!! "Bondage Training - Dangerous Poisonous Flower - 4" stars the beautiful goddess Kuruki Rei Kurumugi!!! Following the smash hit "Yukemuri Nawaki 1", she makes her long-awaited return!!! You've never seen "Rei Kurumugi" like this!!!