Mizuki Yayoi, a female investigator, is betrayed by her comrades, raped by men from an enemy organization, and even has her throat tortured! Tortured on a wooden horse! Mizuki is kidnapped and imprisoned, causing mental upheaval! In the end, she is completely brainwashed and has lewd sex in front of her former boss! This is the best work in the "Brainwashing" series, overflowing with the charm of Mizuki Yayoi like never before!!!