In the deep darkness beneath the neon-lit sea of sleepless Tokyo, a certain organization lurked, lurking in the shadows. It was a group of professional trainers who, due to unavoidable circumstances, abandoned their names and humanity, voluntarily becoming livestock slaves, stimulating and honing the innate masochistic tendencies of these women to the extreme. One woman, Ryoko Katakura, resolutely threw herself into this brutal environment... nasal torture, hard nine-tailed whip, forced enema and defecation, bitch...