Roxas was the mysterious train of Twilight Town. He was bright and sometimes colorful and when he disappeared you were never really sure where he'd gone.
Roxas was strange and magical and not quite there, never quite there, as if he would explode into pixie dust at any moment.
Roxas made you aware of him, made you acknowledge him, but for some reason you could never remember everything you had thought you'd known about him after he was gone.
Roxas was moving, moving, moving on in every instant, leaving behind not-quite-memories and a pinch of pixie dust in his wake.