Yakuza: Like a Dragon, or Yakuza 7, has appeared as a listing on the Steam backend tracker, SteamDB.
As of right now, there is no official news of Yakuza: Like a Dragon coming to PC, but things could now be changing, after the game appeared on SteamDB. This is obviously usually an indicator that a game is coming to the Steam store, as the work is being done in the backend ready for the store page to go live.
The game is currently only out on PS4 in Japan, with it heading west on the console this year. It would be interesting if the game comes to PC at the same time as, or before, PlayStation 4. In my opinion, I could see the game also coming to Xbox soon after western launch, due to the Yakuza games being added to Xbox Gamepass recently.