The popular adult comic I Shouldn't Have Gone to the Convention Behind My Wife's Back comes to life with exclusive mature star Ryo Ayumi. Married for five years, Yumiko is often left alone while her husband travels during the holidays. One day she discovers stacks of adult comics in their bedroom and becomes fascinated by the forceful sex depicted in them. While she loses herself in fantasy, her flirtatious neighbor Kazuya notices and pushes her down. Unlike her passionless husband, he overwhelms her with slow, intense foreplay until her body melts. A full cosplay sex episode is also included.