Just like with the previous Yakuza games, (Y6) Yakuza 6 also comes with several unlockable costumes.
These costumes are unlocked and become available AFTER completing the game at least once. After which you can then jump into the newly unlocked Premium Adventure Mode and either find Bob the Clown or head to New Serene and the Save Point Closet (As seen in the below video)
Also, you cannot wear these costumes during the story mode. They are specifically only available after completing the game and selecting the Premium Adventure Mode.
There are no specific rules or requirements in order to unlock them, they become available straight away after selecting Premium Adventure Mode
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