That moment in which Hayato's face turns from smiling to completely pissed was still indescribable to Ryuutaro. It happened so fast and looked so odd.
But at the moment Ryuutaro rather focused on Yamamoto. He remembered him from that day in the forest. He remembered a bit too well, especially the fact that he had been ready to let this boy die if it somehow meant he and Hayato could get out alive. Ryuutaro pushed the thought aside.

His facial expression turned into his signature smirk and he opened his fan.
"Fukami Ryuutaro. It's a pleasure to meet you."
And completely opposed to his words, he blatantly ignored the hand offered to him. Not about to touch strangers.