Capítulo 523: 289 Ranked Fifth Dark Ultimate Form (4000)_2

At the top of the skull are five differently colored gemstones.

All of them are diamond-shaped, each about the size of a pinky fingernail.

Of the five gems, three are very dim. Only the two in front light up, revealing an irresistibly warm and charming color.

Casio examined the exterior carefully and finding nothing else, he then slowly flipped open the pages. Flap… flap...

Blank, blank, and still blank.

All the pages retained their original colors, with no content at all. The pages were as thin as cicada wings, yet surprisingly tough. Casio tugged hard at them, but these thin pages showed no change, which was quite astonishing. However, no matter how miraculous the materials of the book, without any content it would be useless. Was this just a blank notebook?