Yuuto 

Yuuto found the Hokage's speech on chakra being like a muscle rather interesting - it didn't deviate much from his own philosophy, that Chakra was like a form of inner strength that had to be cultivated, but surprisingly Ria's statement was the one that caught his attention the most; the one about becoming with the wind. He was a wind user himself, what with his Kusanagi having an affinity with the wind, but he had never thought about flexibility - when he had trained, he had always went for precision and swiftness. 

Another thing he was observing was the people themselves as well as their lessons. From what he saw, the Hokage... didn't seem like the warmonger that people made him out to be. Perhaps it was exaggeration? Propaganda? I would have to wait and see.