Final Fantasy Record Keeper

Key to Another World (異次元の扉 ~繋がる心~) was an event in , as part of the collaboration between Final Fantasy Record Keeper and Kingdom Hearts Union χ. It followed the story of , from the Destiny Islands to Olympus Coliseum. In the event, players could collect Munny from enemies to spend in the Moogle Shop.

Story
Destiny Islands, heart of a peaceful world bathed in warm sunlight. There, Sora, Riku, and Kairi made their plans to set off on a grand adventure. But on the day before they had planned to leave, a darkness fell across the island, and the three friends were separated. As darkness engulfs the island, Sora takes possession of the Keyblade, and he sets out on a true adventure to find his friends. In his travels, Sora visits many worlds, meeting new faces and having life-changing experiences along the way. But to reach the end of his journey, Sora must face Kairi, in her death-like slumber, Riku, who is drawn to the seductive power of darkness, and a mysterious figure with an insatiable lust for the dark.

Characters
Sora and Riku appear in Final Fantasy Record Keeper as playable characters, exclusively obtained from this event.

Sora


Sora is classified as a "Keyblade Master" and has a "Physical Attack" combat role.

Riku


Riku is classified as a "Chosen" and has a "Physical Attack" combat role.

Wardrobe Records
s allow characters to change their appearance. Key to Another World added three Wardrobe Records based on the Kingdom Hearts series.
 * The Black-Robed Keeper Wardrobe Record allowed to dress in a Black coat.
 * The Kingdom Hearts Cloud Wardrobe Record allowed to take on his appearance from Kingdom Hearts.
 * The Kingdom Hearts Leon Wardrobe Record allowed to take on his appearance from Kingdom Hearts.

Equipment
Key to Another World added the new Keyblade weapon class, alongside several weapons and armor from the Kingdom Hearts series.

Soul Breaks
 are powerful attacks obtained from weapons or armor. Key to Another World added several Soul Breaks for Sora and Riku, and one for Cloud.

Legend Materia
 are passive abilities that can be obtained from Legend Spheres or equipment. Key to Another World added several Legend Materia for Sora and Riku, and one for Cloud.