He has about two, maybe three seconds to consider how poorly that just went. On the one hand, the fae are certainly backing off. Well. One, anyway, and aside from likely causing him mild burns, it's probably good he was holding Yuuya on the opposite side the whole time. As it is, Frost is still there, having backed away from...

The book-! "Sh-shoot-!" He shouts, releasing Yuuya and turning to look at the puddle. "Mngh...And she claimed to have already gotten what she needed from that..."

So...that doesn't bode well, if it was important enough to fight over. That said- Frost is still there, and perhaps easier to chat with. So, he addresses Frost.

"You," he starts, narrowing his eyes. "What was the purpose of the book Nightshade has now destroyed?" Does he expect a straight answer, no, is he going to try anyways, yes.