Da Capo (〜ダ・カーポ〜, Da Kāpo; commonly abbreviated as D.C.) is a Japanese adult visual novel developed by Circus's division Circus Northern which was released as a limited edition on June 28, 2002, playable on Windows as a CD-ROM; a DVD-ROM version followed on July 26, 2002. An English release was scheduled for December 25, 2008, and the game was available for a brief time on that date, but the title was pulled until January 20, 2009. Da Capo began as a series of prelude short scenarios in the Suika fandisc Archimedes no Wasuremono, and since the initial release, there have been numerous different versions released for Windows and PlayStation 2 over the years with updated scenarios and characters. The gameplay in Da Capo follows a plot line which offers pre-determined scenarios with courses of interaction, and focuses on the appeal of the seven female main characters.

Da Capo centers around Jun'ichi Asakura, who lives with his adopted sister Nemu on Hatsune, a fictional crescent-shaped island where cherry blossoms bloom all year long, where they attend Kazami Academy (風見学園, Kazami Gakuen) high school. On this island, people have mysterious powers and attributes, sourced by the unwilting magical cherry tree. Jun'ichi can see other people's dreams. One of his friends, Kotori Shirakawa, is an idol at the school who can "read minds". One day, to Jun'ichi's surprise, his cousin Sakura Yoshino comes back from America all of a sudden, who looks exactly the same girl that moved away six years ago, and has not aged one bit. She returned to remind Jun'ichi of their childhood promise.