I received an email from a university student who commutes to Tokyo. He said that he has a network of sex friends with married women who are willing to have sex with him easily. I approached this married woman, "Emi-san," and tried to interview her... Her 42-year-old husband has erectile dysfunction, and he has lost confidence in himself because he cannot get an erection for her. To ease her loneliness, she began having sex with college students she met on social media one after another. I interviewed her as she became addicted to sex and enjoyed it.