Mankatsu

Rook, a spy who lost his role due to the end of the Cold War between East and West, takes on the task of searching for the whereabouts of Maria, the wife of millionaire Hafner. However, Maria's true identity is a double agent for Italy and a certain military dictatorship. Hafner was searching for Maria in order to get rid of her for betraying her military dictatorship!

A monster who was made invisible by Kyosai, the leader of the Fujin clan, a ninja group, approaches Kyosai to return him to his original body. However, during the battle, Kyosai is killed by someone. Kyosai's daughter, Kyoko, pursues the monster as her parent's enemy, but a terrifying conspiracy lurks behind this incident!