After her divorce, Rie raised her son Akira all on her own. Life was always tough, but mother and son supported each other and kept moving forward. Akira, who had quietly witnessed his mother's struggles all along, grew into a kind and gentle boy without a rebellious bone in his body, deeply caring for his mother. One day, Akira happily told Rie that he had found his first girlfriend, and Rie warmly encouraged him. Yet beneath her words lay hidden complex emotions stirring deep in her heart—feelings mixed with love and jealousy. And those emotions would soon drive Rie to take action...