Early pinku.
Second Pink film by Wakamatsu
A librarian is subject to a scientific experiment which goes wrong and transforms him into 'The Human Vapour'. He uses his new ability to rob banks to fund the career of his girlfriend, a beautiful dancer. The Human Vapour is ruthless in his quest for money and kills anyone who stands in his way, especially police. He soon becomes Tokyo's most wanted criminal. Can he be stopped before he kills again?
This was the pink film debut of Masayoshi Nogami, one of the most popular and prolific actors in the genre. Over the next 47 years, until his death in 2010, he would appear in hundreds of the films, and direct at least eighteen.