My father remarried to a beautiful woman who was almost my age. My father is busy with work and tends to be away from home, so I (Kawagoe Yui) and her young mother-in-law Kanna (Shinozaki Kanna) spend more time together... One day, Yui saw her mother-in-law's masturbation, and she gradually embraced emotions that she had never felt before... Kanna Shinozaki's long-awaited lesbian ban work!
