It is 1956, and Japan has officially declared the “post-war” period over. In the decade or so that will follow, the country will grow to be the second largest economy in the world. But what was the driving force behind this economic miracle? This drama depicts the intense drama and battles played out among Japan’s leading bureaucrats in the Ministry of International Trade and Industry, focusing on Shingo Kazakoshi, the man dubbed “Mr. MITI” who selflessly and utterly devoted himself to his country’s industrial development.

Set in an old prestigious ryotei (Japanese-style restaurant) in a small town in the center of Tokyo, a young itamae (cook for Japanese dishes) struggles his life, love and work while the long-lasted ryotei and the beloved old town face the change to survive the time. This heartwarming drama shows the intimate relationship of the community that has been lost nowadays, asks what the most important things in your life is, and tells how difficult it is to make a decision. The story is told in the form of a letter from him to his unknown father with lots of humor and love.

To solve the country's low birthrate problem, the Japanese government set up Otona Kōkō (Adult High School). Adults over 30 with no sexual experience are forcibly enrolled into Otona Kōkō by the government. Eito Arakawa is a 30-year-old single man. He graduated from a prestigious university and works at a bank. He has received recognition for his work there. He is also physically attractive, but he has never had sex. One day, he receives an entrance guide to Otona Kōkō.