Kael was a little surprised hearing Rias's question, but not too much. She was an anomaly, as Draven had said. It wasn't surprising for her to sense the changes that flame had brought in him.
Though, even he couldn't understand what those changes were aside from the fact that he could now know some of the secrets of the world—things he shouldn't even be aware of.
He scratched his head with a helpless look on his face and said, "Let's just say that you shouldn't reveal some information so casually."
"It was intentional," Rias spoke with a subtle smile on her face, her violet eyes shimmering under the lamplight. "I sensed that you were special, so I wanted to see how you would react to this information. It isn't something too forbidden or something that would give you corruption, so the danger was very low."