Seijun Suzuki?
I was just wondering if any fans of this film could answer this question: Does Seijun Suzuki (director of classic Yakuza films Tokyo Drifter and Branded to Kill) have a cameo in this movie. I thought the old guy (with shoulder-length hair) who gets killed in a large shootout in the first 30 minutes looks eerily similar to him.
Could it be? It isn't listed on IMDb, but they've made mistakes before...and based on quantity Fudoh's IMDb credits don't seem complete to me (I'm almost certain the character is unlisted).