Riku noticed the quiet... this was Sora, he was rarely ever quiet. "Hey." Riku nudged Sora lightly. "Is everything okay, Sora? You didn't not get into our college of choice or something?" he was trying to pick the most absurd thing that might make Sora so quiet.
Gokudera grunted a little, and glanced back at Tauna. "I hope you at least named him though." He quickly covered his face with his textbook incase Tsuna tried to throw something at him.