On a weekend, Shin taro, a salaryman living in a residential neighborhood in Tokyo, was striving to balance work and family life. His wife had grown up in the countryside, and her mother was scheduled to visit from her hometown this weekend. Eagerly anticipating his mother-in-law's arrival, she had traveled far by train to see how her daughter and son-in-law were living. That day, the doorbell rang, and as he rushed to answer, he was instantly captivated by the sight of her entering the house. Her appearance and demeanor made his heart race with excitement.