Minami Nagareda shocking retirement film! Once a month, Minami goes to look after her son who comes to Tokyo. However, after visiting him so many times, her feelings for her son gradually change to those of a man, and the couple make a vow. There is no way that such a rotten relationship can last long. Thinking of her son's Mirai, Minami decides to step aside. "The truth is, I still love him... I don't want to break up. But..." This is the last time. To cut off her lingering attachment, and to take responsibility as a mother, she goes to see her son...