Prestige exclusive actress Yatabe Kazusa is invited to experience pleasure she has never experienced before! This time, the experiment is a full course designed to make her cum over and over again. We tested the effects of "choking," a technique favored by approximately 30% of AV actresses. After heightening her sensitivity with external portio massage and bondage, and then inserting, her body immediately begins to convulse. When she is then strangled and thrusted, the pleasure hormone "dopamine" is secreted in the brain, causing her to climax repeatedly and intensely. In four other experiments, including extreme teasing sex and the 4,000-year-old Chinese secret ritual "Nine Shallow and One Deep Method," she will experience numerous convulsions and orgasms, eventually reaching a trance state!