This is a gangster film that has replaced all out toughness with pop trash cool and boy it's as smart as it thinks it is.
The plot and even the continuity makes no sense at times but it does not matter, you are sucked in by the fun and bravado of it's director Suzuki Seijun who puts together a film that oozes with style and cool onto a canvas of inovative lighting, sound and music.
He can be the only director who could get away with putting a Western Saloon brawl in a modern day gangster movie and have the hero, a tough hitman, sing the title song throughout the film as if he was in a pop video. He is that good!!
I also liked the contrast between the old and new Japan with it's alternative scences in city and rural settings, the sound track with the mix of traditional and 60's pop, attitudes of the characters, mix of western and traditional japanese cultures, even a mix of traditional cultural practises where Tetsu breaks a wine glass at the end to symobolise to his boss that they are parting company.
This film has had an influence on modern directors, the most recognisable Queintin Tarantino, Steven Speilberg, John Woo and Ridley Scott.
This and Shogun Assasian was a definate influence for Kill Bill Volume 1, if you liked that film you will love this film.