Isao Matsumoto

Screenplay

King of Sha-kin 4

Screenplay

King of Sha-kin 3

Screenplay

King of Sha-kin

Screenplay

Mad Dog

Screenplay

The Fighting King

Screenplay

The Fighting King 2

Screenplay

Dark Society in the East

Screenplay

Nakibokuro

Screenplay

Lonely Hitman

Screenplay

Those Swell Yakuza

Screenplay

Love on a Daily Basis

Screenplay

Crazy Boys

Screenplay

Double Rope Torture

Screenplay

The Shogun's Vault IV: The Gold Mines of Sado

Screenplay

The Blazing Valiant

Screenplay

Nun Story: Frustration in Black

Screenplay

Rope and Skin

Screenplay

The Shogun Assassins

Screenplay

The Okinawa War of Ten Years

Screenplay

Golgo 13: Assignment Kowloon

Screenplay

The Smart Aleck Ten

Screenplay

Legend of Dinosaurs and Monster Birds

Writer

The Killing Machine

Writer

A Cheerful Yakuza

Writer

The Yakuza Code Still Lives

Screenplay

The Racketeer Ishimatsu

Screenplay

Kawachi Rascal Is Spurred On

Screenplay

Female Ninjas: In Bed with the Enemy

Screenplay

Sister Street Fighter: Fifth Level Fist

Writer

Detonation: Violent Riders

Screenplay

Pimp Heaven

Screenplay

The International Gang of Kobe

Screenplay

The Murder Corps

Screenplay

Scoundrel Boss

Screenplay

The Scoundler vs. The Viper Brothers

Screenplay

Reformatory Buddies

Screenplay

The Great Adventures of Kikansha Yaemon D51

Screenplay

Woman Mobsters

Screenplay

Girl Boss: Crazy Ball Game

Writer

The Incident at Takanodai

Writer

The School Deviate Waru

Screenplay

Young Oh ! Oh !

Writer

Gokudo of Kamagasaki

Screenplay

Wandering Ginza Butterfly

Screenplay

Wandering Ginza Butterfly: She-Cat Gambler

Screenplay

Shōwa Gokudōshi

Screenplay

Delinquent Boss: Alley Dog Commando

Screenplay

Delinquent Boss: Devour to the Bone

Screenplay

Delinquent Street

Writer

Kigeki Toruko-buro Osho-sen

Screenplay

The Bad Boss: Wholesale Roundup

Screenplay

Delinquent Boss: Smooth Talking, Good Fighting

Screenplay

Sex Comedy, Quick on the Trigger

Writer

Wolves on Motorcycles

Writer

Wolves of the City: First to Fight

Screenplay

The Sucker's Blunt Dagger

Writer

Kigeki Gyanburu Hisshôhô

Screenplay

Fugitive Scoundrel

Screenplay

Wolves of the City: Checkmate

Screenplay

Wolves of the City, Take Your Chance

Screenplay

Wolves of the City, Money Hunters

Screenplay

Hooligans on Buggies

Screenplay

The Swindlers

Screenplay

The Japan Derby Race

Writer

A Yakuza Goes Home

Writer

Delinquent Boss: Wolves of the City

Screenplay

Daring Girls

Screenplay

Brutal Tales of Chivalry 5: Man With The Karajishi Tattoo

Screenplay

The Yakuza Awaits

Screenplay

Wolves of the City, Operation "Rat"

Screenplay

The Bad Boss 3

Screenplay

Wolf Escort

Screenplay

Yakuza on Foot

Screenplay

Team of Ruffians

Screenplay

Woman Boss: Chivalrous Fight

Screenplay

Return of the Outlaw

Screenplay

Scoundrel

Writer

Enlisted Yakuza

Screenplay

The Bad Boss

Screenplay

The Marked Man

Screenplay

Wild Spirit

Screenplay

The Chivalrous Life

Screenplay

Dissolution Rites

Screenplay

North Sea Chivalry

Screenplay

Contemporary Tales of Chivalry 2

Screenplay

Contemporary Tales of Chivalry: The Lone Wolf

Screenplay

Nerves for Victory

Screenplay

Brutal Tales of Chivalry

Screenplay

Invitation to the Enchanted Town

Screenplay

Ghost of the Pearl Divers

Screenplay

Revenge of the Pearl Queen