Yakuza Zombie (実録外伝 ゾンビ極道) 23 years old

Yakuza Zombie opens with an introduction to a mysterious Yakuza graveyard deep in the forest, and a story of the baddest Yakuza of them all, Naruo Ryuuji (shown in cut scenes played by Ozawa Hitoshi). Naruo Ryuuji was a fearless killer who eventually got into heroin and, exactly like Ishimatsu Rikuo in Takashi Miike's Graveyard of Honor, eventually leaps to his death from the top of a prison, claiming he'll be back. I'm assuming this is a reference to real life crazy Yakuza Ishikawa Rikio, whom the original Graveyard of Honor was based on. It's established that the corpse of the fierce Yakuza Ryuuji is buried in the graveyard beneath a marker with the Japanese characters "Jingi" (Honor), and then we are taken to the modern day.

Credits

Yakuza Zombie Cast

Name	Character
Hitoshi Ozawa He was 38, now 61 years old
Hideo Murota He was 63, 64 years old when he died
Sakae Kimura He was 45, now 69 years old

Yakuza Zombie Crew

Name	Department
Hirohisa Sasaki as Director. He was 39 (now 63) years old	Directing