I've discovered the Yakuza Series late, when the Kiwami and 0 was already out.
Finished today my 3rd one, and really looking for more.
Each game has a story very compelling, each game has over 70 substories to fill your time with laughs and entertainment. Each game has a uniqueness, you can't compare them,
I treat this as seasons on a soap opera, and it's by far, the best soap opera I've had the pleasure to play until now.
Totally recommended.

PS: when will the 3, 4, 5 & 6 will arrive?