A story of a certain mother. A single mother, Chisato Shoda, and her son Yasuhiro live together. Half a year has passed since the divorce. Since the divorce, there have been no more ups and downs caused by her husband's excessive indulgence in pleasure and his overly free-spirited nature. However, for a son who is entering puberty, the change in family environment was quite a shock, leading him to become a recluse. And when Chisato looks back at her son's current situation, she realizes that as he grew older, she had fewer opportunities to indulge him…
