Official Shogunate executioner Ogami Itto has been framed for disloyalty to the Shogunate by the Yagyu clan, against whom he now is waging a one-man war, along with his infant son, Daigoro.

Ogami Itto volunteers to be tortured by Yakuza in order to save a prostitute and is hired by their leader to kill an evil chamberlain.

Ogami Itto is hired to kill a tattooed female assassin and battles Retsudo, head of the Yagyu clan, and his son Gunbei.

A Shogun who grew paranoid as he became senile sent his ninjas to kill his samurai. They failed but did kill the samurai’s wife. The samurai swore to avenge the death of his wife and roams the countryside with his toddler son in search of vengeance.

Fearless Edo-period police inspector Hanzo Itami, nicknamed The Razor, has developed his own unique way of extracting information for his inquiries. His first adventure sees him investigating his superior officer's mistress, whom he suspects of having ties with a reputed criminal on the loose.

Ogami Itto battles a group of female ninja in the employ of the Yagyu clan and must eliminate a traitor who plans to sell his clan's secrets to the Shogunate.

Deep in the mountains of feudal Japan, a group of children endure cruel and unorthodox training in order to become the Shogunate's most secret and deadly weapons - the Demon Spies! Their true identities are hidden - even from each other. Behind their demon masks, they are educated in the deadly arts of infiltration, espionage, assassination - and seduction! If they survive to become strong enough to kill their teachers, they will become - the Demon Spies! Sent on a suicide mission to uncover a deadly conspiracy, five inexperienced Demon Spies must infiltrate a powerful fief, discover the location of its secret arsenal, and destroy it. But Lord Shogen, the Demon Hunter, plans to brutally interrogate, ingeniously torture, and cruelly execute - the Demon Spies!

A Ronin with a death wish reluctantly joins the Clan of the Forgotten Eight, a nasty crew of ronin who are wrapped up in a clan war over local prostitution.

When trickster demons give him the power to seduce any woman he wants, a high school pervert accidentally puts his family, the girl of his dreams, and his very soul on the line.

Against the backdrop of the Edo treasury devaluing currency and driving many into poverty, Hanzo Itami enforces the law without regard to status. He shows inadequate respect to the treasurer, who wants him dead.