In Yakuza 4 you can see the massive improvement from 3: the story isn't sublime and definitely not my overall favourite of the Yakuza series, but it's still pretty good. Loved the characters and how their fate brings them together. Like Yakuza 3, I really can't love the combat system: even on normal mode it's so frustrating to fight mini-bosses and bosses, especially on the very last one. RGG did a nice job, but it is far from excellent.