Da Capo II (〜ダ・カーポII〜, Da Kāpo II; commonly abbreviated as D.C. II) is a Japanese adult visual novel developed by Circus which was first released on May 26, 2006, for Windows computers. It is a part of the ongoing Da Capo series of games by Circus, and is the direct sequel to Circus' previous title Da Capo released in 2002. Da Capo II is described by Circus as a "ticklish school romance adventure (こそばゆい学園恋愛アドベンチャー, Kosobayui Gakuen Renai Adobenchā). A fan disc, Da Capo II: Spring Celebration, was released on April 27, 2007, and features springtime stories set after the endings for each of the six Da Capo II heroines. An all-ages consumer port titled Da Capo II: Plus Situation containing additional scenarios was released for the PlayStation 2 in May 2008. The PlayStation 2 version was later ported to PC, titled Da Capo II: Plus Communication and containing the hentai scenes found in the original release, in December 2008.

Da Capo II takes place 53 years after the events of Da Capo, when Sakura Yoshino, weary of being alone for so long, wished upon a prototype artificial wish-granting magical cherry tree for a son—Yoshiyuki Sakurai. In the first arc, while Yoshiyuki attends Kazami Academy, beneath the school, he awakens Minatsu Amakase, a robot. Yoshiyuki helps her adapt to a life with humans despite robots being nothing more than mere tools. In the second arc, Yoshiyuki begins to harbor feelings for his stepsisters, Otome and Yume, the granddaughters of Jun'ichi and Nemu. However, the cherry tree starts malfunctioning, granting all wishes, regardless of how impure, which is causing numerous incidents to occur in Hatsune. The situation gradually worsens and Otome has to choose whether or not to wither the cherry tree, which would erase Yoshiyuki's existence in the process, so as to save Hatsune.

The game centers on Hatsunejima (初音島) the same island as Da Capo from the original story. Yoshiyuki Sakurai is the protagonist of the game. Sakura and Jun'ichi are the only returning characters, and Nemu is the only other Da Capo character to be mentioned by name. Moe, Mako, Kotori, Miharu, and Yoriko are also mentioned, but indirectly. Yume, Nanaka, Minatsu, and Sakura's themes are remixes of themes from previous Circus games. Yume, Minatsu, and Sakura's are remixes of Nemu, Miharu, and Sakura's from Da Capo, and Nanaka's is a remix of Sayaka's from Suika.