Kitakawa Pro presents a dominatrix-themed adult film featuring a big ass. Keiichi had long been captivated by the artworks of painter Namio Harukawa, harboring a deep desire to surrender his body to the beautiful, alluring curves of a woman's large buttocks. Into his life steps Naomi, the elegant daughter of a company president. Her voluptuous rear surpasses even his wildest fantasies, and he begins sending her love letters every day. Finally, gathering all his courage, Keiichi decides to meet Naomi in person.