Cross Game is a romantic comedy sports manga series written and illustrated by Mitsuru Adachi and published by Shogakukan. It was serialized in the shōnen manga magazine Weekly Shōnen Sunday from 11 May 2005 (issue 22/23 2005) through 17 February 2010 (issue 12 2010). The individual chapters have been collected into 17 tankōbon volumes, the first of which was released on 2 September 2005, the last on 16 April 2010. A special edition of volume 17 was also released with a 72-page All Color Works: Cross Game mini art book containing all the full-color pages from the original run in Shōnen Sunday as well as the tankōbon cover images.
The series is about the high school baseball players Ko Kitamura and Aoba Tsukishima and their attempts to fulfill the dream of Aoba's dead sister, Wakaba, of seeing them play in the national championship tournament in Koshien. In 2009, it received the Shogakukan Manga Award for shōnen manga.
The series is divided into multiple parts. Part 1, "The Season of Wakaba", consists solely of volume one, and takes place while the main characters are in elementary school. Part 2, "The Season of Aoba", consists of volumes two through fourteen. It begins four years later with Ko in his third year of junior high school and continues into high school. In Part 2, the chapter numbering begins again from one. In October 2008, the series went on hiatus at the end of Part 2 and was resumed in March 2009 with Part 3, which is untitled, beginning with Ko in the summer of his third year of high school.