Sora didn't expect Riku to come right out and tell him what was wrong -- Riku had always kept things close to his chest, so to speak, which was one of the few things that annoyed Sora about the silver haired teen. Sora didn't expect people to be as open emotionally as he was, but damn if Riku didn't frustrate him sometimes. Scrubbing a hand through his hair, he was about to ask what was wrong again, but Riku had gotten up and started to walk away.
Well. That was another habit of Riku's that was getting old quickly. With a long-suffering sigh, Sora folded his arms over his chest, weighing his options. He could let Riku walk away, or he could follow. Considering the other boy's mood, he decided with following.
"Hey! Wait up! You said you wouldn't go wandering off on your own anymore!" he reminded, quickening his pace to match that of his friend's. "What got you so worked up?" He asked again, frowning up at Riku.