Machiko Ono

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.

Ryota Nonomiya is a successful businessman driven by money. He learns that his biological son was switched with another child after birth. He must make a life-changing decision and choose his true son or the boy he raised as his own.

Amiko lives in Hiroshima, Japan. She is a little different from other girls. Her family consists of her father, pregnant mother, and an older brother. Her father is nice to other people and her mother teaches calligraphy. Amiko has classmate Ri-kun, whom she likes. Amiko is honest and naive. Her behavior sometimes makes people feel embarrassed.