Opening the door to a world’s heart causes its walls to crumble.
These fragments are seen as shooting stars.
This explains why these “gummi blocks” can travel freely to other worlds.
I know the catalyst of this collapse — the appearance of the Heartless. However, it will take time search out the worlds’ doors and to retrieve each heart.
Furthermore, the doors can be locked using a Keyblade, making the heart forever unattainable. I must take action before the wielder of the key appears in this world.
If the princesses and the Keyblade are connected, they should resonate.
I’ve chosen a girl. I don’t know if she holds the princesses’ powers, but I will find out. She may lead me to the key bearer.
I shall set her free and observe.
