Arakawa Under the Bridge
The story is about the strange courtship of a successful executive in life called Kou and a mysterious woman called Nino who lives under a bridge. It all begins when Kou almost drowns in a river but is saved by Nino. For saving his life, Kou fulfills Nino's desire to have a boyfriend. Thus, Kou becomes her boyfriend, but has to live with her under the bridge...