Since my daughter started kindergarten this spring, my wife has been working part-time at a company in the city for about four days a week... Until then, she had been a housewife raising the children, so I was watching her happily, thinking that it was good for her as it helped the household finances. However, recently, it seems that she has been having tea and chatting at our house with a young man around 20 years old who is also working part-time at the same company...