Percy wasn't really one for general outings, but-- well. He did like to read, and he had been on a young adult novel sort of kick lately. He suspected this book would be a little too silly for him, but that didn't stop him getting the author to sign it either way.
He hadn't really been planning on staying much later -- but changed his mind at least for a short time being when he spotted Hermione. It'd been a while, and he rather felt badly about it. "I didn't realize you'd be here," he said in greeting.