"I promise I'll never love anyone but you for the rest of my life." The promises she believed were all lies. She wanted to build a happy family with the person she loved. Reiko, who had only wished for that, was confronted with a cruel reality. Her husband, who she thought she loved, changed completely after their marriage, took a mistress, and no longer cared about his family. Her husband's stepson was worried about Reiko, who seemed lonely. Before she knew it, he had fallen in love with her not as a stepmother but as a woman in her own right...