is a Japanese manga series written and illustrated by . It was serialized in Kodansha's shōnen manga magazine Weekly Shōnen Magazine from April 1988 to October 1996, with its chapters collected in 44 volumes. A second series, Doctor K, was serialized in the same magazine from October 1996 to October 1998, with its chapters collected in ten volumes. A third series, K2, was serialized in Kodansha's seinen manga magazine Evening from May 2004 until February 2023, when the magazine ceased its publication, and moved to the online platform in March of that same year. Its chapters have been collected in 45 volumes as of July 2023.
By September 2021, the overall manga franchise had over 15 million copies in circulation.
Publication
Written and illustrated by , with medical supervision from Tohoru Nakahara, Super Doctor K was serialized in Kodansha's shōnen manga magazine Weekly Shōnen Magazine from April 6, 1988, to October 2, 1996. Kodansha collected its chapters in 44 volumes, released from August 17, 1988, to December 13, 1996.
A sequel, titled Doctor K (rendered in Latin-script), was serialized in the same magazine from October 9, 1996, to October 21, 1998. Its chapters were collected in ten volumes, released from April 17, 1997, to November 17, 1998.
Another manga series, titled , started in Kodansha's seinen manga magazine Evening on May 11, 2004. Evening ceased publication on February 28, 2023, and the series moved to Kodansha's online platform on March 26 of the same year. Kodansha released the first volume on November 22, 2004. As of July 21, 2023, 45 volumes have been released.
Reception
By September 2021, the overall manga franchise had over 15 million copies in circulation.