章 128: Astonishing New Discoveries and The Twenty Ancient Forbidden Elemental Arts

"This..." Arthur exclaimed, his eyes widening in surprise as he turned to the next page.

To his astonishment, it displayed a detailed illustration of human chest anatomy, complete with labeled body parts.

The drawing showcased the heart on the left side, surrounded by a cluster of elemental cores, exhibiting Rian's impressive knowledge of human anatomy.

It was evident that Rian was a true genius, well-versed in the complexities of human body parts.

"Perhaps it's because he's a killer that he knows so much about the human body," Arthur pondered, his thoughts racing for a moment before nodding in agreement.

"Yes, that must be it!" he exclaimed, his certainty and conviction evident in his voice.

He then turned his attention to the bottom page, which contained an in-depth explanation of the theory Rian had mentioned, and he read it attentively.