148cm tall, C-cup, completely shaved, and prefers doggystyle—this bullied girl named Koko is bound up and tormented all over her body at will. Subjected to relentless toy play that won't let her stop even after orgasm, she climaxes repeatedly, gradually transforming into an obedient girl overwhelmed by pleasure. Despite her unattractive appearance, her lust is abnormally intense; even as her body convulses, she repeatedly begs for harder and more intense stimulation.