PS5 (PS in general) are region free, so you can play any games from other countries on your US PS5. If the game ha DLC that you would like to buy, then you will need to have a PSN account for the country it was originally released for and a form of payment for said account. In the past I have purchased DLC for Japanese games through my Japan PSN account by buying PSN cards and redeeming through that account. But if you just wish to play the game, you can buy it confidently. It will work as any other game. It's even backwards compatible. I have been playing my professional baseball spirit 2019 (PS4) on my PS5 waiting for this baby to arrive.