This story is a sequel to Kingdom of Friendship
Twilight became a princess, the Elements of Harmony were returned to the Harmony Tree, and the Heartless have returned. Now it is up to her to take the Keyblade once more and see what she can do to save, not only Equestria, but a whole different world and bring peace to a third.
Overthrowing a tyrant, killing some heartless, and making new friends. Just another day for Twilight Sparkle.
I recommend reading the first story before this one, and I also think that reading my other story "Guard Bonding". Human tag is for eventual visit to a surprise world for Kingdom Hearts fans. DarkponyD is the one to thank if you like the world once it is visited. He helped me out a lot with that, without him, I might still be stuck there.