RyTmo77 has released a pretty cool mod for Yakuza: Like a Dragon that allows you to play as Kazuma Kiryu. Kiryu was the protagonist of all previous Yakuza games, and this is a mod that most die-hard fans will appreciate.
This mod replaces Ichiban with Kiryu as your squad leader. According to the modder, thole story is playable. However, RyTmo77 recommends using Kiryu after Ichiban arrives in Yokohama for the first time, otherwise it can freeze or crash your game.
This mod gives Kiryu two new jobs, ‘Legend’ and ‘Rush’. What this basically means is that Kiryu can have his own moves. Additionally, Kiryu can use any job players want him to use.
You can download the mod from here. You can also find below a video that showcases this mod in action.