Yui is a wife who hasn't had sex with her busy husband for a long time. She feels embarrassed about making the first move, and after sending her husband off to work today, she naturally starts to tease her vagina with her fingertips. Just as Yui can't speak and simply hangs her head down. As if anticipating this, her father-in-law skillfully pushes Yui down and gives her a passionate kiss. Despite the sense of guilt she feels towards her husband and the pleasure welling up from her uterus, when his big cock is forced into her mouth, she moves her tongue like a conditioned reflex, savoring his meat stick...