[Hara Shigeyuki] Extra Virgin Mama (Web Comic Toutetsu Vol. 46)

A frustrated older housewife, neglected by her husband for three years and stunned to overhear his young lover plotting to spend the night, seizes the moment by seducing his buddy instead. The encounter escalates from a teasing lap-dance in lacy lingerie and stockings to a frantic, filmed romp, leaving her breathless, dripping, and apologizing to "Sana" in guilt-ridden ecstasy. As her son unwittingly returns home to discover the mess, the scene closes with her husband blissfully unaware in the shower, never suspecting what just unfolded under his own roof.