Black Tight Killers (1966)

Plot

Daisuke Honda, a war photographer returning to Japan from Vietnam, crosses paths with stewardess Yuriko Sawanouchi. After sharing drinks at a Tokyo bar, he finds himself embroiled in a deadly plot to save her from a group of chic female assassins. As he attempts to rescue Yuriko from her captors, Daisuke uncovers a quest involving foreign treasure hunters searching for a hidden WWII relic, concealed on an island by Yuriko's father. The stakes rise as danger lurks from both the ninjas and those seeking the long-lost treasure.