The History of Blade of the Immortal
Blade of the Immortal began as a single chapter. Hiroaki Samura's opening story, published in Kodansha's Monthly Afternoon on June 25, 1993, had just won the Grand Prize of the Afternoon Four Seasons Award, the magazine's newcomer prize. Afternoon turned it into a series, and the series refused to end quickly: it ran in the same magazine from December 1993 to December 25, 2012, 207 chapters collected in 30 tankobon volumes.
The story it tells is set in the mid-Tokugawa period and follows Manji, a swordsman who cannot die, hired as bodyguard by Rin Asano, a girl seeking the men who destroyed her family and her father's sword school. Samura has said his largest influence was the classic swordsman figure Tange Sazen, and that his aim was a new style of manga: in his words, do not obsess about the details, just look at the story. Readers did: by February 2017 the manga had five million copies in circulation, and by May 2019 over 7.5 million.