“Also, it seems monsters aren’t monsters because they have mana crystals inside them. That’s kind of a surprise.”
Like Shea had said, it wasn’t mana crystals that turned regular animals into monsters. In fact, it was the other way around. Once a creature had absorbed enough mana to turn into a monster, the mana solidified into a mana crystal.
Basically, when mana gathered together outside of a living body it turned into a Divinity Stone, but when it gathered within a living creature it became a mana crystal. However, mana crystallized easier inside a living creature, so mana crystals had a far smaller capacity than Divinity Stones. Of course, various factors like the creature’s temperament, the environment it lived in, and so on all influenced the capacity of its mana crystal once it turned into a monster.
The reason mana crystals didn’t form inside humans and demons was that the two races had crafted a formal system for using magic. They usually expended mana regularly, and if they accidentally stored too much within their bodies, there were ways to cure that so mana crystals wouldn’t form. In other words, technology and civilization kept sentient races from producing mana crystals inside them. That being said, it was possible that people who didn’t usemagic for decades could still form mana crystals inside themselves.
