Gangster Cop (1970)
An undercover cop befriends a yakuza underling who through his contacts helps him infiltrate two rival Yakuza gangs He pits the two rival gangs against each other in hopes that they will cross each other out
Zero Woman: Red Handcuffs (1974)
After a politicians daughter is kidnapped by a ruthless gang, a brutal policewoman is released from jail and sent after them