They've already done a live action adaptation of the original game back in 2006. It was a bit.... odd, and definitely not the way you'd wanna experience the yakuza 1 story for the first time, but it is an entertaining enough shitshow of a time for people that just want more yakuza.
(Also the entire thing is on YouTube but don't tell Sega that)
@negglartz on that place Elongated Musksticles ruined
https://x.com/neggoartz/status/1833956375367659551