At the beginning of April, when our eldest daughter started kindergarten, my wife started working part-time on the manufacturing line at Tsutsumi Tech... Until then, she had been a housewife raising the children, so I was watching her happily, thinking that it was a relief for her as it helped our household finances. However, recently, I noticed that she was having tea and chatting at our house with a young man around 20 years old who was also working part-time at the same factory...