Miu Sasaki, the breakout star of real-life big-breast documentaries, appears in this intense production! This work is a real-life documentation of a two-day confinement and training session with an actual big-breasted anal-loving female masochist, fully embodying the concept of complete ownership and control. Directed by the genius Hidehira Narumi, this confident new piece combines the elements of "Shi Etsu Shoujo" and "Slave to the Vibrator," surpassing them both with a bold new expression. Its realistic depiction and powerful direction hold a deeply captivating, mind-shaking appeal for viewers.