【Violently Trembling Pussy】The emergency patient brought to the hospital where Mary works was her boyfriend, Shunsuke. However, a difficult surgery is necessary to save him. Although her image is bad, she decides to ask the doctor with super-first-class skills. The doctor proposes a bet to Mary as a substitute for performing the surgery. If she wins the bet, he will perform the surgery. It seems that the bet is a clinical trial of medical devices and drugs imported from overseas...