Bobsican
He/Him- 21,651
- 6,291
As we can see here, factually Riku sees the World that Never Was as fiction, therefore, Riku should have a 1-C key (see something 3D as fictional basically means at least 1-C),
This would also likely scale to most of the KH cast after this point, which includes, but is not limited to Sora, Mickey and the rest of the end-game cast (would say, but I don`t want to spoil directly here).
As a 3D structure is fiction (to Riku), as stated by the game itself, he should be at least 6D
Riku clearly ascending to the 6th dimension as seen here
This would also likely scale to most of the KH cast after this point, which includes, but is not limited to Sora, Mickey and the rest of the end-game cast (would say, but I don`t want to spoil directly here).
As a 3D structure is fiction (to Riku), as stated by the game itself, he should be at least 6D
Riku clearly ascending to the 6th dimension as seen here