The reason the black company warrior doesn't quit is because the convenient body of the accounting officer, Kokoro Ayase, lets him fuck her immediately whenever he gets aroused during overtime.
A certain IT company in a new ward operates as a grueling black company, completely untouched by work-style reforms, yet experiences an odd phenomenon—no employees resign. The reason lies in Kokoro Ayase, a young staff member from the accounting department who supports male employees pushed to their limits by relentless overtime and executive pressure. Though modest in demeanor, Kokoro possesses an incredible big-titted, erotic body that stands out unmistakably. With a personality unable to refuse when asked and weak against persistence, she allows her convenient body to be used as a sexual outlet, serving as the company's de facto sex slave. Acting as a devoted office cumdump, she cures burned-out employees on the verge of quitting through sex, relieving their exhaustion with titty fucks during late-night overtime. Her presence has become an emotional pillar for the workforce. Always wearing a smile, she tells her coworkers, "Take all your work stress and pour it into me—let go and feel refreshed."