"Thank you," he told her, taking the tome in hand and skimming the pages. Sure enough this was about runes, crests, and magic symbols and how to craft them, but what it was showing was way too advanced for his skillset. After all, the book showed signs and drawings that more represented three-dimensional air arts in the first few pages, and here he was still stuck drawing two-D with a surface to place it upon. "Its either nothing at all, or the advanced art it seems," he muttered to himself with a quick sigh before closing it once more. Not only that, but the pricetag was way out of his range. He'd have to take a job or two even think about affording it, and who knew how long this tome would last on the shelves.
Still, he knew how to defend himself with his weapons, so taking on such practices would be only a staple to what he knew, so he was fine not rushing out to get the coin for it, thus leading him to return it to the shelf.
However, the burst of energy that came from the black tome forced himself to turn about, drawing out his fan as he moved in close before it found itself to be slammed shut, stilling the air once more. He had no idea what kind of being was sealed inside that book, but his instincts always told him to be defensive about them. Never know what catches came with them.
Still, it seemed the gnome was used to this sort of thing, laughing it off as he handled the tome casually into the back. by then, the blonde mistress was ready to leave as she placed a few books onto the counter, ready to leave. Taking a glimpse on the cover, Douken couldn't help but think out loud, "Alchemic enchantments? Never heard of such a study like that. I mean, when I think alchemy, I think of creating, not imbuing."