Two years after her divorce, Naomi lived alone with her son, Akira. Struggling to support the household on her own, she worried that her busy work schedule left little time for her son, making him feel lonely. Recently, Akira had made a new friend named Satoshi. Naomi hoped that this friend could fill the emotional gap she couldn't. However, Satoshi's appearance would become a turning point that drastically changes the relationship between Naomi and Akira. As the bond between mother and son is shaken and reshaped in unexpected ways, a dramatic story unfolds.