Certain outfits for Majima are locked as Dart rewards in Like A Dragon: Pirate Yakuza In Hawaii, and you can only get them by finishing specific challenges in the mini-game.
To unlock the best Dragon Kart, you have to beat the most difficult opponents in Like A Dragon: Pirate Yakuza In Hawaii.
As you're trying to track down all the clothing items in Like a Dragon: Pirate Yakuza in Hawaii, you might see that some are listed in the customisation screen as being available from Darts, four in ...