Six years ago, Reiko was raped at a neighborhood park, and ever since that incident, she became deeply obsessed with masochistic training. However, unable to reveal her desires to anyone, she continued fulfilling her duties as a wife, living an ordinary life. Over time, conversations with her busy husband grew scarce, and their intimate life nearly disappeared. After six years of pent-up sexual desire, Reiko's urges finally exploded, driving her to seek out domination once again. In a dim, moldy sex room, she is tormented by unfamiliar men, her underwear drenched in a flood of cum.