Worlds United: The Keyblade Heroines' Quest

Mario and Sonic X Pretty Cure X Kingdom Hearts is a crossover collaboration of Super Mario Bros., Sonic The Hedgehog, Pretty Cure, Disney, Final Fantasy, and The World Ends With You.

plot
the characters of Super Mario Bros., Sonic The Hedgehog, Pretty Cure, Disney, Final Fantasy, and The World Ends With You needs help of 18 international keyblade girls from 18 different countries of the world. they picked Astrid of England, Katie of Mexico, Madeline of Brazil, Flora of Russia, Hilda of Egypt, Elaine of Japan, Tanya of France, Pauline of India, Barbara of Poland, Sadie of Germany, Candace of the United States of America, Wanda of Sweden, Rachel of Jamaica, Roxanne of Ireland, Elizabeth of Italy, Vanessa of Hungary, Oriana of Saudi Arabia, and Gabrielle of China to stop an evil witch from destroying the worlds of Super Mario Bros., Sonic The Hedgehog, Pretty Cure, Disney, Final Fantasy, and The World Ends With You.

the main 18 girls of the globe

 * Astrid of England
 * Katie of Mexico
 * Madeline of Brazil
 * Flora of Russia
 * Hilda of Egypt
 * Elaine of Japan
 * Tanya of France
 * Pauline of India
 * Barbara of Poland
 * Sadie of Germany
 * Candace of The United States of America
 * Wanda of Sweden
 * Rachel of Jamaica
 * Roxanne of Ireland
 * Elizabeth of Italy
 * Vanessa of Hungary
 * Oriana of Saudi Arabia
 * Gabrielle of China

Franchises that are in the crossover collaboration

 * Super Mario Bros.
 * Sonic The Hedgehog
 * Futari Wa PreCure Max Heart
 * Futari Wa PreCure Splash Star
 * Yes! PreCure 5 GoGo
 * Fresh PreCure
 * HeartCatch PreCure
 * Suite PreCure
 * Smile PreCure
 * DokiDoki PreCure
 * Happiness Charge PreCure
 * Go! Princess PreCure
 * Mahou Tsukai PreCure
 * KiraKira PreCure A La Mode
 * Mickey Mouse
 * Alice in Wonderland
 * The Rescuers/The Rescuers Down Under
 * The Great Mouse Detective
 * Dumbo
 * Robin Hood
 * Snow White and The Seven Dwarfs
 * Sleeping Beauty
 * Cinderella
 * Bambi
 * Fantasia
 * Pinocchio
 * Lady and The Tramp
 * Peter Pan
 * The Aristocats
 * The Many Adventures of Winnie The Pooh
 * The Fox and The Hound
 * The Black Cauldron
 * Oliver and Company
 * The Little Mermaid
 * The Lion King
 * Aladdin
 * Tarzan
 * Mulan
 * Beauty and The Beast
 * Pocahontas
 * The Hunchback of Notre Dame
 * Hercules
 * Enchanted
 * The Nightmare Before Christmas
 * Tron
 * Tangled
 * Final Fantasy Series
 * The World Ends With You