Clannad (visual novel)

is a Japanese visual novel developed by Key and released on April 28, 2004 for Windows PCs. While both of Key's first two previous works, "Kanon" and "Air", had been released first as adult games and then censored for the younger market, it was released with a rating for all ages. It was later ported to the PlayStation 2, PlayStation Portable, Xbox 360, and PlayStation 3 consoles. An animated film by Toei Animation was released in September 2007, followed by two TV anime series including two original video animation (OVA) episodes by Kyoto Animation produced between 2007 and 2009. 
The story follows the life of Tomoya Okazaki, a high school delinquent who meets anyone at school to solve the problem, including five girls.