Eiro took a step forward to get a better angle while looking at this book that Armodeus was holding. With a curious expression, as he had never before seen anything like a true grimoire before, the Demon leaned forward to find a difference to a normal book.
And rather quickly, he did find something. Although, it wasn't the thing that he had intended on finding, really. What he happened to rather randomly uncover was a gut feeling of sorts. As if he had seen something similar before. And then, it clicked in his mind.
It was something that he hadn't really thought about all that much because his mind had to be focused on literally everything and anything else, so he could still remember it to an extent... But it was the book that Eiro had found at that store. The one that had an incredibly large amount of magic imbued into it for some reason.