When Riku heard someone speaking behind him he turned and perked a brow at the girl. He didn't plan on hurting her or anything, he wasn't like that. But instead he simply set the keyblade away just as easily as he had called it forth in the first place, crossed his arms, and leaned back against the stack of crates to watch her. It wasn't that he was trying to hide the keyblade or anything. Why should he be ashamed of something that he was chosen to wield?
But it was easy enough to tell that she wasn't used to that sort of thing. Especially as she stood there with those wide eyes and a hand clamped over her mouth. "You're probably going to want to get used to seeing weird things around here," he said simply. He wasn't trying to be an ass or anything, that just came naturally. But hell, that actually came out pretty nice. For Riku, at least. Sora was always getting onto him for being a jerk to people, but being a jerk was in his nature.
At least he was a jerk that genuinely tried to do the right thing, even if his way of getting to the right thing was sometimes questionable.