Questions We Still Need Answers to After Beating Kingdom Hearts 3
What’s in the Black Box?
Handed down to Luxu along with the Master of Masters’ Keyblade, the Black Box’s contents are known to no one else except him.
Many have tried to find it and discover its contents, including the Thirteen Darknesses as well as Maleficent and Pete, but by the end of Kingdom Hearts 3, Luxu is still the only one who knows its true purpose and what is contained within it.
Leading up to 3’s release, many were sure its contents would be revealed. After all, the Box has thirteen locks on it, and given Xehanort’s possession of the No Name Keyblade, most thought he would open it to further his own ends.
With that not having occurred though, it’s become a toss up on when fans will get to figure out what is inside the Black Box.
Given that it remains closed after the Keyblade War, it’s likely that it won’t be opened during the events of Union χ[Cross]. That leaves its contents’ reveal to be seen in an entirely new entry, though no one knows when that might see the light of day.