During Tokugawa Ieyasu's epic battle of Sekigahara, two samurai face off outside of history. In the heat of the duel between Kyoshiro and Demon Eyes Kyo, a shooting star slams into the plains, shattering the ground and engulfing both of them. Four years later, the bounty hunter Yuya finds the good natured Kyoshiro, now a traveling medicine man. Hidden deep inside Kyoshiro is the soul of his old opponent, the merciless samurai Kyo.

Feudal lord Kanzen Inukai is entrusted with the protection of an ancient sword from the shogun, which is stolen by the samurai Kazamatsuri. Kanzen's young son, Heishiro, insists on retrieving the sword himself to protect the family name and honor. Heishiro's two friends, Shintaro and Tadasuke, accompany him, ostensibly to assist him, but in reality to compete for the glory that will go to the one who defeats Kazamatsuri.

It is the beginning of the industrial revolution, and feudal Japan is in turmoil. The ruling Shogun are wielding their abusive powers to instill fear and dominance over their oppressed subjects. A group of Samurai have banded together, and, with the development of new weapons and new technology, they have both the will and the hardware to stand up and fight. Ichimatsu is one of these fighters.

An elite group of specially trained fighters in feudal Japan, the Samurai Guns forge ahead in their relentless struggle against the sinister forces of the Shogun. With their expertly crafted firearms and explosives, these brave warriors are badly outnumbered but still they have no choice but to infiltrate heavily fortified enemy installations to rescue fallen comrades.

As Ichimatsu battles the demons within his soul, the fight for justice against the Shogunate continues. Lord Kozan's new position has increased his power, and thus the Anti-Samurai Gun Unit has become even more deadly. They have garnered even bigger and badder weaponry - and their counter-intelligence has moved them dangerously one step ahead of our freedom fighters. And that spells trouble.

Ichimatsu's past is as dark as his future. Not only has it come to light that a member of the Shogunate may have been responsible for his sister's brutal rape and murder, but now it appears other disturbing relics of Ichi's past are here to haunt him once again. Old friends and old enemies confront Ichimatsu and force him to question both his mental stability and his loyalty to the Samurai Gun.

It is the beginning of the industrial revolution, and feudal Japan is in turmoil. A group of Samurai have banded together, and, with the development of new weapons and new technology, they have both the will and the hardware to stand up and fight. Ichimatsu is one of these fighters. By day, he works incognito at a local tavern; in the evenings, he frequents the brothels; and by the dark of night, he doles out some big-time, gun-barrel justice! He is here to help. He is Samurai Gun!

It is the beginning of the industrial revolution, and feudal Japan is in turmoil. The ruling shogun are wielding their abusive powers to instill fear and dominance over their oppressed subjects. Beatings, imprisonment, rape and even murder are the adopted tactics chosen to maintain their reign. The bloodshed must end.

Following his father's forced seppuku, Bunshiro and his mother are left with nothing but a meager income and the shame of his father's alleged treason. After years of dedicating himself to swordsmanship, and trying to forget the memory of his childhood love, Fuku, he becomes a crop inspector for the fief and finds himself ensnared by the same devious retainers that cost his father his life.

In an alternate fuedal Japan, mad scientist Kyoraku creates a female ninja mechanical doll. Equipped with 11 types of built-in weapons, she is infused with the souls of eleven of her fallen sisters and she uses their combined power to take down anyone who stands in the way. The ninja doll will not die even if she is slashed by a sword or shot by a gun; she is virtually indestructible on her quest to save humanity.

Toshiro Mifune stars as Isaburo, an aging swordsman living a quiet life until his clan lord orders that his son marry the lord's mistress, who has recently displeased the ruler. Reluctantly, father and son take in the woman, and, to the family's surprise, the young couple fall in love. But the lord soon reverses his decision and demands the mistress's return.

37,000 peasants perished in the Shimabara Revolt; among them, the leader of the uprising, Shiro Amakusa. More than a decade later, Amakusa rises from the dead! He resurrects an army of living dead master swordsmen by way of an occult art called "Makai Tensho" (demonic transmigration). But, standing in their way is the legendary Samurai Jubei Yagyu!