Board Thread:Naruto Discussions/@comment-24778121-20160205131830/@comment-25632268-20160205162459

Rage gtx wrote: Since you speaking about DLC it means that you will be able to buy them later.

From pre order bonus description, it looks like while Hokage Kakashi costume, Boruto and Sarada are the DLC, The Last characters and costumes are unlockable in the game, the pre order just gives you access to them earlier (so I guess you can use in-game money to unlock them even if you didn't pre ordered or they are unlocked after completing the game).