During the Sengoku period, the Ii family governs the Totomi region. Due to many past wars, there are no more male successors left to become a lord. Naotora Ii (Kou Shibasaki), the only daughter of the lord, now becomes a lord. She faces a difficult period. The constant love from her fiance, whom she became engaged with at a young age, helps her to keep moving forward.
Uno Meiko is the daughter of parents who run a western style restaurant in Tokyo. She marries and moves to Osaka with her husband. Meiko experiences cultural differences between Tokyo and Osaka, as she lives as a mother and wife in Osaka.
The story revolves around the 38-year-old Usa Shijimi (Watanabe), who is a high school classical literature teacher. Her students are mean to her, but they don’t realize that she has another identity. Outside school, she lies about her age to be active as the super popular 17-year-old idol Watanabe Mayu, whom the students adore.