Five years into their marriage, Jizo and Shizuko, who reunited at a school alumni gathering, began an affair. Each time they had sex, Ken became interested in Shizuko's large buttocks, but she stubbornly refused anal sex. One day, their classmate Fujiko found out about the affair. Also sexually frustrated, Fujiko lured Ken away with her prized anal skills... The trio's relationship spiraled into chaos and met a gruesome end on September 9th, the 'Day of Chrysanthemums'.
