A salaryman named Takihara was caught masturbating by his cleaning lady, Yui Inamori, after pulling an all-nighter at work. She was practically invisible within their company due to her plain appearance, but when he saw how voluptuous she really was underneath her uniform, he couldn't help himself and pounced on her... Despite her unassuming looks, Yui turned out to be quite horny and eagerly accepted his advances, even allowing him to creampie her right there on the job!

しがないサラリーマンの滝本は徹夜の残業明けに朝勃ちを清掃員の唯井さんに見られてしまう。社内では空気のような存在の唯井さんだったが、作業着越しに見えるたわわなカラダに興奮した滝本は思わず襲い掛かり…。地味なルックスとは裏腹に欲求不満ですぐ中出しさせてくれて、しかも名器な清掃員さんと就業中にハメまくる！