The title says it all: "One Summer"

This wallpaper is dedicated to Sora and Riku, who have been best friends ever since their childhood (as seen from their larger image in the right). They have a photograph of their older version on the left side, which symbolizes the continuation of their friendship....sharing one sky and one destiny in this one summer that they have in the image.

"I don't need a weapon. My friends are my power."

(Located at the bottom of the photograph of the older Sora & Riku.)

That is one of Sora's quotes of wisdom. Riku is one of his friends that provides him a source of power...through friendship.

The photograph of Sora and Riku are overlayed on top of a grunge, having it as their background. As for the image of the young Sora and Riku (which I did not draw/make...so courtesy to the original artist), I have enlarged and extended its left side, as well as softened the image itself.