Kaji's good looks and charm have made him popular with everyone at his office. However, beneath the surface, he secretly looks down on others and judges them by a scoring system! If only he could find the perfect bottom who could live up to his standards. One day, Kaji finds himself on an overnight business trip with his bland colleague, Fukami. Unimpressed by the plain-looking Fukami, Kaji vows that even if they were the last two people on a deserted island, he would never consider sleeping with him! At least, that's what he thought... until he glimpsed Fukami coming out of the shower and realized his irresistibly cute and erotic side!

Fujimoto Shouji, a widowed single father who aspires to be a picture book author, encounters Takasaki Minami, a singing idol on the children's educational show O-nee-san to Uta-ou! (Let's Sing Along With Our Songstress!), outside work. As a television idol for children, Minami is lonely in her private life and is not allowed to fall in love. Any scandals are absolutely prohibited. Thus begins an adult love story with a songstress.