A childish grin spread across Luke's face. "It tickles, huh? Shouldn't have told me that!" He reached out with both hands and tickled the other's wings, smiling mischevously as he did so.

But he stopped after a second and squinted, looking at the back of Guy's neck. He tilted his head slightly, moving his hand up to touch the skin. "Hey, what is that?" It was black, Guy's skin had some sort of markings on it. He knew that had never been there before. It looked like a series of tiny vertical lines. He brushed his thumb over them.