Sayaka was raised solely by her father, as her mother had passed away. Because her father worked long hours every day, Sayaka spent a lot of time alone at home. The only thing that kept her from feeling lonely was the idol live show she watched on television. The idol girls' smiles were a source of strength for her, and she became determined to become an idol herself so that she could give that same strength to others. However, it is noted that she was so determined to achieve her dream that she