Yamamoto, a salaryman who is not good at his job, is always immersed in fantasies about his boss, Yumi, who is a busty woman without a bra. At that time, his colleague Wakamatsu gets a good performance, and Yumi rewards him by having lewd sex with him in the office at night! Besides that, she also forces herself on her boss, showing off her braless body! Yamamoto, who witnessed it all, is impressed by Yumi, who is a carnivorous type and attacks men...