"This is work (undercover investigation)... please, don't say anything..." The mission assigned to Amami, a career investigator who has just returned from the United States, is an undercover investigation... Amami has just gotten engaged to a fellow investigator, but this is a mission. She is embraced and loved by a man she does not love (a criminal), and even enters into a fake marriage... she accepts the semen of a man she hates inside her body... all of it creampie rape! A cruel mission. The worst, the worst. A pitch black mission with no hope. "An investigation? This is coercion..."