Blade of the Immortal (Muugen no Juunin) is set in 18th-century Japan and tells the story of a girl named Asano Rin, and her badass bodyguard Manji. Manji is immortal thanks to an infestation of kessen-chu, sacred worms that pervade his system and knit together any injuries he sustains. He can die only by beheading or by coming into contact with a particularly rare poison. His goal in the series is to remove the curse of his immortality, which will happen if he kills 1000 evil men in reparation for the 100 innocents he killed as an outlaw.Two years prior to the beginning of the story, Rin's father (a swordsmanship teacher) was murdered and her mother was brutally raped in front of her eyes by the members of the Itto-ryu — a renegade sword school led by Anotsu Kagehisa. Rin vowed to track Anotsu down and kill him in revenge, and so she hired Manji to help her fulfil her quest. The series follows Rin and Manji as they travel through feudal Japan, fighting members of the Ittou-ryu and other enemies, and meeting comrades with questionable morality of their own.A Samurai epic with vividly realistic art and well-crafted characters, Blade of the Immortal by Hiroaki Samura also explores many thoughtful issues relating to death, immortality, revenge, forgiveness, and redemption.Bee Train studio along with Production I.G produced an anime adaptation which saw a US release from Media Blasters.