Gunjō (羣青,
lit. "Ultramarine") is a Japanese
manga series written and illustrated by
Ching Nakamura [
ja]. It was serialized in
Kodansha's Monthly Morning Two from June 2007 to June 2009, before being canceled, and the manga continued its publication in
Shogakukan's Monthly Ikki from February 2010 to January 2012. Shogakukan collected its chapters in three tankōbon volumes. A live-action film adaptation produced by
Netflix, titled Ride or Die, premiered worldwide in April 2021.
Gunjō, written and illustrated by
Ching Nakamura [
ja], debuted in
Kodansha's
seinen manga magazine Monthly Morning Two [
ja] on June 26, 2007.[3] The manga was canceled after 13 installments on June 22, 2009.[4][5] Nakamura first planned to resume the manga as dōjinshi;[6][5] however, her plans changed after discussing with
Shogakukan's Monthly Ikki's staff.[7][5] The manga resumed publication in Monthly Ikki on February 25, 2010,[5][8] and finished on January 25, 2012.[9] Shogakukan collected its chapters in three tankōbon volumes, released from February 25, 2010,[10] to May 30, 2012.[11]
In October 2020, it was announced that
Netflix was developing a live-action film adaptation of the manga, titled Ride or Die (彼女, Kanojo, "Her"), which premiered simultaneously worldwide on April 15, 2021.[13][14][15] The film stars
Kiko Mizuhara and Honami Sato. The film was directed by
Ryūichi Hiroki, Nami Sakkawa wrote the scripts and
Haruomi Hosono performed the theme song.[13][2]