Monthly Ikki
"Dorohedoro" is written and illustrated by Q Hayashida. The series began in the first ever issue of Shogakukan's "Spirits Zōkan Ikki" (re-branded as "Monthly Ikki" in 2003), released on November 30, 2000. "Monthly Ikki" ceased publication on September 25, 2014, and the series was transferred to "Monthly Ikki"'s magazine replacement "Hibana", starting publication of March 6, 2015. "Hibana" ceased publication after two years, on August 7, 2017, and "Dorohedoro" was transferred to Shogakukan's "Monthly Shōnen Sunday" magazine on November 10, 2017. The manga finished, after 18 years of publication, on September 12, 2018, with its 167th chapter. Shogakukan has compiled the chapters into twenty-three "tankōbon" volumes, released from January 30, 2002 to November 12, 2018. A 14-page special chapter was published 17 months after the series' finale in the March issue of "Monthly Shōnen Sunday" on February 12, 2020.