One Week Friends, a Japanese manga series written and illustrated Matcha Hazuki, began as a one-shot manga by Matcha Hazuki and was first published in Gangan Joker's September 2011 issue. A full serialization later followed in Square Enix's Gangan Joker from January 21, 2012. After spanning three years, the series came to an end in the February 2015 issue of Gangan Joker which was published in Japan on January 22, 2015. Despite the end of the serialization, a special chapter will later be included in the magazine's May 2015 issue when it is published on April 22, 2015. The chapters was collected into a total of seven tankōbon volumes, the first of which was released on June 22, 2012. The final volume was released on April 22, 2015. During their Sakura-Con 2017 panel, Yen Press announced their license to the manga.
On March 22, 2021, the April 2021 issue of Gangan Joker revealed that a sequel manga titled Sonogo no Isshūkan Friends would begin serialization in the next issue.