It's been almost three years since I got married to my wife, Mio. Mio had been a full-time housewife, but with our wedding anniversary approaching and the boredom of everyday life, she said she wanted to work part-time. Wanting to fulfill her feelings, I remembered that the factory where my friend works was looking for part-time workers, so I introduced her to the workplace. After that, my wife was hired by the factory without any problems, and we were supposed to have a happy wedding anniversary. At the time, I couldn't imagine what would happen if a woman was thrown into a man's world...