Chisato, who had grown bored with married life, complained that she met her husband while working part-time as a university student, and after a long relationship, the romantic feelings had faded, leaving them like mere roommates. One day, she attended a high school reunion and there she reunited with her ex-boyfriend. Their conversation flowed, and recalling nostalgic feelings and the innocent days of her youth, Chisato headed to a hotel with her ex after the reunion. She said the sex with someone other than her husband, after so long, was extremely thrilling, and having committed this mistake, she rediscovered the pleasure of being desired by a man. From then on, Chisato began playing around with men through dating apps and such.