{Taken from the book 'History of Species Civilization'}
The classification of Mana species is not based on appearance or body shape. Nor is it based on how the organs of the body or the culture they have. The classification of mana species is only based on how they approach mana.
In the previous chapter, we discussed how humans get closer to mana. The concept of turning mana flow into a constellation has been used by humans for centuries. Although the first record found regarding this refers to the era of The Mana Gods, it is possible that different mana usage existed before that time.
Even though it has a different way, in essence, the way of the elf species gets closer to mana is almost the same as humans. Namely by changing the mana flow in their bodies into constellations or what they are more familiar with, The Roots.