Each volume is written with historical accuracy, set in the Edo period of feudal Japan, although the characters themselves are fictional.
Although composed largely of unrelated anthology stories, the series follows Yamada Asaemon (also called Yamada Yoshitsugu and nicknamed Kubikiri Asa),2 a young rōnin who assumes the post of sword-tester during the 1700s.3 Asaemon's reputation is fearsome among the populace because he killed both his father and his first love. He performed the former at his father's insistence, as the terminally ill man wanted to test his successor's swordsmanship in an act of seppuku; the latter was his first execution: a criminal who had seduced him as a boy years earlier. He is atypical of portrayals of rōnin in that he has a governmental post, owns a substantial house, and does not normally roam the countryside. He refuses to marry and have a family,4 but in one story, marries and immediately divorces a woman, but tells her that she will always be the wife of his spirit.5
Not long after the series' debut, creators Kazuo Koike and Goseki Kojima depicted Asaemon's fate in their popular series Lone Wolf and Cub.67 Years after the events of Samurai Executioner, Asaemon is ordered by his superiors to kill Ogami Ittō, thrusting him into conflict with the Yagyū clan, who are already at war with Ittō. The two men meet and agree to test their swords on stone-cut Buddhist statues. Ittō thrusts his sword at Asaemon, breaking the latter's sword and resulting in his death. Ittō observes that the statues had iron collars placed on them by the Yagyū, but which rōnin they intended to sabotage is unclear. This story is collected in the fifth trade paperback published by Dark Horse Comics, Black Wind. One reviewer notes that Asaemon looks different in this series, possibly due to Ogami Ittō being designed so similarly to the original Asaemon.8
The character is also portrayed by actor Gō Wakabayashi in the "Headhunter Asaemon" episode of the Lone Wolf and Cub television series.
There are a total of 54 stories. An English translation of the series by Dana Lewis and Marc Miyake was published in the United States by Dark Horse Comics from 2004 to 2006. In the back of each volume is a glossary of Japanese terms not translated into English for lack of an equivalent word.
In 2014, Dark Horse re-released the series, collecting the stories into four larger format "Omnibus" volumes.9
The ten volumes are as follows (in English from Dark Horse Comics):
Mikito Ujiie. Oo Edo shitai ko: Hitokiri Asauemon no jidai [Corpses in Edo: The time of Hitokiri Asauemon]. Tokyo, Japan: Heibon-sha, 1999. ↩
"Review: Samurai Executioner V. 7: The Bamboo Splitter". Dark Horse Comics. Retrieved 9 September 2021. https://www.darkhorse.com/Reviews/305/Samurai-Executioner-v-7-The-Bamboo-Splitter ↩
Koike, Kazuo (2001). Lone Wolf and Cub: Volume 5 – Black Wind. Gōseki Kojima, Dana Lewis (1st ed.). Milwaukie, OR: Dark Horse Comics. p. 159. ISBN 1-56971-502-5. OCLC 45712675. 1-56971-502-5 ↩
"Hellstick" Volume 3: The Hell Stick: "Can a man who lives by killing take a wife and father a child?" ↩
"Gobari Sandosu" Volume 6: Shinko the Kappa. ↩
"Dark Horse Comics presents Samurai Executioner, a manga masterwork from the creators of Lone Wolf and Cub! :: Archived Press Releases". Dark Horse Comics. Retrieved 15 March 2021. https://www.darkhorse.com/Press-Releases/922/Dark-Horse-Comics-presents-Samurai-Executioner-a-manga-masterwork-from-the-creators-of-Lone-Wolf-and-Cub ↩
"Lone Wolf and Cub Volume 5: Black Wind by Kazuo Koike, Goseki Kojima". Penguin Random House Canada. Retrieved 15 March 2021. https://www.penguinrandomhouse.ca/books/242423/lone-wolf-and-cub-volume-5-black-wind-by-kazuo-koike-goseki-kojima/9781621150701 ↩
Martin, Mick (17 August 2011). "Review - Lone Wolf & Cub Vol. 5: Black Wind". Superheroes, etc. Archived from the original on 23 January 2020. Retrieved 27 November 2021. https://web.archive.org/web/20200123192456/http://www.superheroesetc.net/2011/08/review-lone-wolf-cub-vol-5-black-wind.html ↩
"Samurai Executioner Omnibus Volume 1 TPB :: Profile :: Dark Horse Comics". www.darkhorse.com. Retrieved 27 September 2020. https://www.darkhorse.com/Books/24-356/Samurai-Executioner-Omnibus-Volume-1-TPB ↩