All textures were made by me =D
Here's the basic story of this wallpaper:
Kairi (in the beginning of KH2) is thinking about her memories with Riku and Sora back then in Destiny Island. Those good times seem to have happened long long time ago and their memories are gradually disappearing from Kairi's mind. She doesn't want to forget, but sometimes as they are too painful and impossible to be recreated again, she almost gives up hope.
So... I made their faces look blurry, representing the fading memories. The bubbles are also meant to represent that. Plus, those soft tiles effect. Oh, and I added the words "Blurry faces" and "Static Voices".