Leo looks off to the side when Curufin says he hopes he won't eat anyone's soul. He hasn't done anything like that so far, but old habits always die hard. If anything happens to Hope or if he loses control, he'll end up taking souls without an ounce of regret. "We'll see."

The idea that Curufin has had something similar happen to him is an interesting one to Leo. He's shown much more understanding towards the monster than anyone else here. "Has anyone ever told you that you're pretty wise?" Maybe it was just an Elf thing, he certainly didn't know.