Incredulously at first

"... What?" Sora was the first to articulate what all the boys were thinking. The only two girls on the island were... just going to go around in the buff 24/7? That sounded too good to be true. But it was undeniable that there were two completely naked girls in front of them.

Then Sora managed to process the rest of what Selphie had said. Kairi… was unable to get dressed? Focusing his attention from the girl casually showing off her goods to the one curled up on the ground, he noticed that Kairi herself looked to be on the verge of tears.

Worried, the young hero knelt down next to his childhood friend. "Kairi? Are you okay?"

"What do you think? I'm naked in front of all my oldest friends, and I couldn't even put on clothes if I tried!"

"I'm sorry. Umm... if it makes you feel any better, none of us will look at you any differently because of this. You're you, whether you're wearing clothes or not. Right, Riku?"

The older keyblade master, who had walked up behind Sora while he was talking, nodded his head in agreement. "Right. Nothing will change how your friends see you."