But then, another headache arose: how could he cultivate mana points in reality?
In the World of Sky, many professions, monsters, and creatures possessed mana points, which were broadly classified into two types: innate and acquired.
There were many creatures naturally endowed with magic power, such as magical anomalies, demons, elves, mana floaters, dragons...
Some humans also possessed innate mana.
As for those who cultivated it later in life, there were quite a few as well; theoretically, any intelligent being could learn and train to obtain the power of magic, and it was usually not very difficult. Even lower beings like murlocs and kobolds could learn a few simple spells like Ice Lance or Fireball Technique if they tried hard enough.