[@Sadu]

I don't think the Royal Authorities have to be the same amount as the Princesses of Light, especially since we already have exceptions for Kings with no connection to the Princesses of Light. I think the criteria being honorable leaders of light who have the ability to influence others works well.

I agree that the Royal Authority is the ability to/give permission to open Kingdom Hearts. That's the perfect set up for why Xehanort needs 13 Members in the Organization. Gives a legitimate reason for the number.

Just change the other half of the Royal Authority to the Seven Guardians of Light. Seven Guardians who protect the Princesses of Light. So Beast is Belle's Guardian. Fairy Godmother is Cinderella/Lucian's but Lucian may also be his own because of the keyblade. Everything else still works with the Villains representing Sin. The Guardians can even represent the 7 Virtues.

1. Prince Lucian
2. Alice
3. Anastasia
4. Princess Kida
5. Belle
6. Princess Jasmine
7. Terk (?)

The seventh is really up to y'all. I was just suggesting something to add to the plot of Tarzan's world. But I only care about Anastasia.