Between 1968 and 1969, Nikkatsu put out six films in the Outlaw Gangster series: VIP, VIP 
2, Heartless, Goro the Assassin, Black Dagger, and in the opening months of 1969, Kill! A great deal of credit must go to Arrow for resurrecting this more-or-less forgotten series after a showing at an Italian film festival in the mid-2000s. I’ve lamented before that there’s very little English language information on the series, from sketchy IMDB entries to a barren Wikipedia page, even when investigated in Japanese. To be launched from almost complete obscurity to a premium Blu-ray collection loaded with extras from Japanese film scholars is impressive.
Kino 893 