Sword Gai

is a Japanese manga series written by Toshiki Inoue with original character design by Keita Amemiya and scenario by Wosamu Kine. The first twelve episodes ("Part I") of an anime adaption were released on Netflix worldwide on March 23, 2018.

Plot
A young man becomes host to a legendary infernal sword and, with the fate of humanity now in his arm, wields its demonic power against his enemies.