ATID-663 - A construction site worker, Kuriyama Rio, involuntarily urinated, soaking her work clothes, while suppressing intense dislike for a man to the point of abdominal muscle spasms.

Rio works at a construction site and is a strong-willed female worker in a male-dominated society. However, Rio, who doesn't want to lose to men, and her old-fashioned boss, Ichihara, who believes 'women shouldn't speak to men,' are constantly clashing. As usual, the two clashed at the site today, but Ichihara's long-suppressed desires ignited...