The hentai is set in the present day somewhere in Tokyo. Saki Watase, a young office worker, finds herself in a difficult situation - she just catastrophically lacks money for housing and has to look for a second job. She manages to find a job as a part-time tester at a small company. After a while, Saki gets a new job to test an extra large XL size condom! To her enormous disappointment the only man of that size turns out to be Keisuke Sudou, known among his comrades as the "demon boss", whom she simply can't stand! But what can you do when losing your job is tantamount to losing your livelihood... -