Arakawa Under the Bridge Arakawa Under the Bridge Set in Arakawa, Tokyo, the series tells the story of Kou Ichinomiya, a man who has accomplished everything by himself. Ever since he was little, his father has taught him one rule: to never be indebted to another person. One day by accident, he falls into the Arakawa River and almost drowns. A girl by the name of Nino rescues him and, in return, he owes her his life. Unable to accept the fact that he is indebted to her, he asks her about a way for him to repay her. In the end, she tells
Arakawa River (Fukushima) ineffective, and the river continued to periodically flood, culminating in a large-scale flood on August 5th, 1986. In 2004 the Arakawa River's flood control system was completely overhauled, and 13 new check dams were built along the main river and numerous other dams built on its tributaries. In 2008 the Agency for Cultural Affairs designated the Arakawa First Check Dam as a Registered Tangible Cultural Property. In 2007 the Arakawa River tied with six other rivers for having the best quality river water in country based on biochemical oxygen demand tests conducted by the Ministry of Land, Infrastructure, Transport and