Miki raised her son Masaharu as a single mother, working tirelessly to support him. Her efforts paid off when Masaharu successfully graduated from vocational school and began his career as a carpenter. With her days of raising a child behind her, Miki felt a sense of accomplishment, yet also a vague emptiness. Suddenly, Masaharu invited her on a hot spring trip. Carrying mixed emotions, Miki began preparing for the journey. *Please note that the main video contains minor glitches or blurring in some parts.