This book tells the story of "fast, easy wives," women throughout history who would sacrifice themselves sexually for the good of their families. Then, we learn the modern day tale of Natsumi, a young woman who lies about a pregnancy to secure a marriage with her boyfriend, Isao. Natsumi convinces herself the lie will result in a bright future and a happy marriage. However, things begin to spin out of her control when a handful of people learn the truth and each react to it in different ways. Can Natsumi ever become Isao's wife and live a normal life? Can she ever leave the lie behind? Or will it follow her forever?