Akio Kanzaki’s job as head of human resources is wearing his nerves thinner and thinner. To make matters worse, he’s on the brink of divorce with his wife, and his relationship with his college-student daughter isn’t exactly smooth sailing. One day, he decides to drop in to Tokyo’s old-timey district to visit his mother Fukue. However, things seem a little off. His mother used to be always working with an apron on, but now she’s covered in stylish clothes, looking livelier than ever, and even in love! Akio becomes perplexed, feeling out of place in his own mother’s home, but after encountering kind, warm—and almost nosey—neighbors and a side of his mother he’d never seen before, Akio gradually starts to discover something he had lost sight of.
The story takes place during a summer of continuous sunshine when water supply restrictions are issued in the city. Shunsaku Iwakiri works for the city's water department and his job is to visit homes and stores that are behind on their bills and either collect the money or shut off the water supply (water suspension enforcement). Shunsaku is separated from his wife and children, and his heart grows thirsty as he spends his days visiting poor households and being abhorred. One day, during a water shutoff, Shunsaku meets two young sisters who have been neglected. He sees them as his own children and offers them a helping hand.
M, a mystery writer, has a girlfriend of five years named F, who disappeared on Halloween night. When a woman comes and claims to be her sister, M begins the search for his girlfriend. Along the way, the people he meets describe a woman very unlike the F he knew.
In 1964, Momoko came by herself to Tokyo from her hometown. She met Shūzō and married him. They raised two children together, but Shūzō suddenly passes away. Momoko is dumbfounded by being alone again. She begins to go to the library and borrows books. This changes her life.
Kankurō Kudō (宮藤 官九郎 Kudō Kankurō, born 19 July 1970) is a Japanese screenwriter, dramatist, director, actor and member of the theater company Otona Keikaku. He won the 'Best Screenplay' award at the 2002 Japanese Academy Awards for Go, which explores problems faced by people of Korean-heritage living in Japan. He acted in the hugely popular tear-jerker, Crying Out Love, In the Center of the World, and is also guitarist in the Japanese Comedy Rock Band Group Tamashii. Description above from the Wikipedia article Kankurō Kudō, licensed under CC-BY-SA, full list of contributors on Wikipedia