Yoko Minegishi, 50 years old. Her husband left home three years ago, and now she lives alone with her son. Trying to forget the hardships of daily life, she recently started taking dance lessons. She thought her heart had finally begun to feel a little lighter. One day, her son came home looking dejected and depressed. Filled with maternal concern, she hugged him tightly. Then her son whispered, "After all, the only one I can truly lean on is you, Mom," and began touching her body...