Sonoda Mion works in the administrative department of a lingerie manufacturer, driven by strong ambition and constantly striving to prove her abilities. Her hard work pays off when she's finally transferred to the product development division and selected as a member of the team for the "New Lingerie Launch Event." Until now, she endured sexual harassment from clients and senior colleagues, often forced into borderline coercive sexual acts—all in silence, for the sake of promotion. But even greater trials await her. As she pushes through the grueling days of a black company, the humiliation and shame she suffers gradually begin to transform into pleasure...