''What is the true nature of this always carefree senior that I admire...?'' The protagonist, Ooi Futoshi, follows the married elite saleswoman Hashimoto Yuzuki to learn her sales techniques but ends up witnessing her astonishing side. Seeing Futoshi become rock hard at the sight of her appearance, her semen addict's blood boils and she sets out to milk him dry... Noticing Futoshi's ''talent'', Yuzuki becomes utterly captivated by him...