Sora no Iro, Mizu no Iro (そらのいろ、みずのいろ, lit. Color of the Sky, Color of the Water), also known just as SoraMizu (そらみず ), is a Japanese eroge visual novel game, originally released by Ciel in 25 June 2004, which was adapted into an adult anime, released as an OVA and produced by Himajin, its first episode being published in 28 July 2006, and second episode on 27 June 2008.
Story: The story begins with the introduction of Asa Mizushima (水島朝 Mizushima Asa), a girl who is a transfer student and meets Hajime Saisho (最所弌 Saisho Hajime), the main male protagonist, with love ensuing.
(source: Wikipedia)