Purify your six senses! A wandering swordsman living in the midst of bitterness and vendetta, Enjuro, one of the Four Demon Demons, is training without a teacher in the practical swordsmanship of the Satsuma clan, the Jigen-ryu style, in order to slay his sworn enemy, Gengobei Tamari, who led him down the path of evil. Gengobei unleashes a succession of skilled assassins. Become a demon of the "Four Evils and Four Demons" and slay the hated Gengobei!