@
harikanchan
No idea why the game doesn't work on Rogero, I'm on Rebug 4.21 anyway so I can't help you that much other than to say have you tried the usual methods (internal, external, bdmirror etc) ?
I don't even know where to begin to add subtitles etc to JPN games, sorry.
Maybe one of the other guys on 4.30 can help?
Found these via Google (Yakuza 5):
http://kuai.xunlei.com/d/ZYZIRGYVHPUY (BLUE box to download)
http://urlxf.qq.com/?Uz6ZZvq (non-coloured box to download)
See if they work.