In my mid-forties, I married my childhood friend, who is younger than me. Contrary to my desire to have a child, my wife refuses to have sex with me because she is busy with work. In the end, she says she will do it if I hold off for a month and then abandons me. A month later, still unable to have sex with my wife, I return home to celebrate the marriage of my sister-in-law, Ichika. While I spend the time trying to suppress my sexual desire that is threatening to explode, Ichika in-law, Ichika, approaches me again and again with a fearless smile on her face...