Movies: Kōji Iwamoto

A samurai answers a village's request for protection after he falls on hard times. The town needs protection from bandits, so the samurai gathers six others to help him teach the people how to defend themselves, and the villagers provide the soldiers...

Shipwreck survivors found on the presumably uninhabited Infant Island leads to a scientific expedition that discovers a surviving native population along with the Shobijin, tiny twin fairy priestesses of the island's mythical deity called Mothra. Aft...

A floating amorphous life-form descends from the atmosphere to consume carbon in the form of diamonds....

Japan, 1860. The men of the Mito clan, victims of the Ansei purge, anxiously prowl around the Sakurada Gate of Edo Castle with the intention of assassinating Naosuke Ii of Hikone, tairō of the Tokugawa shogunate and responsible for their misfortune....

The Americans are swiftly closing on Okinawa, an island just south of the Japanese mainland. The Imperial command sends top generals and several army divisions to defend it at all costs. The mission quickly degenerates as vital resources and troops a...

After their lord is tricked into committing ritual suicide, forty-seven samurai warriors await the chance to avenge their master and reclaim their honor....

Nuclear tests create a radioactive man who can turn people into slime....

When Sergeant Okubo's brother is murdered at a Japanese outpost in Northern China during the Second World War, Okubo poses as a war correspondent and seeks out his brother's killer....

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In this patriotic WW II drama, the Japanese army demonstrates its courage and willingness to do anything to win as they endeavor to sneak into Communist China to bring back the flag of a defeated enemy regiment....

Ryuta and Mineo Komatsu are brothers, both yakuza (gangsters). Mineo, although complicit in crime, even murder, wants out of the gangster life, hoping to become a successful singer instead. Ryuta loves his brother, but Mineo's possible defection pres...

Young Guy (Kayama) competes in an electric guitar competition and plays American-style football. Released alongside Invasion of Astro Monster....

After being mistaken for an Interpol agent, a man who was just supposed to go on vacation gets mixed up in a war between two gangs intent on winning the favor of a notorious arms dealer....

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Men are being murdered by a psycho called "The Telegian," who uses a matter-transmitting device to locate his victims....

Japanese police detective Saburo Fujioka is suspected of corruption, demoted, and sent to the city of Kojin. Kojin is the scene of fierce fighting between rival gangs. Fujioka is assigned to investigate the death of the wife of gangster Tetsuo Maruya...

Towards the end of World War II, five men are tasked with freeing the son of a general from Chinese captivity....

An early Okamoto yakuza film, though it's not in the Underworld series (along with The Last Gunfight and The Big Boss) despite being alternatively known as "Death of the Boss." While Okamoto did not write this film and took on the project because he ...

This Japanese action-adventure is set in the 17th century when all forms of swordplay were banned. One fighter, an excellent swordsman believes the law is unfair. His brother keeps his opinions about the law to himself. The swordsman vents his frustr...

A young country boy leaves his village for Tokyo, where he begins to work as a stock trader. First part (of four) of the film adaptation of Bunroku Shishi's novel, Oban....