"I remember that White Hair seemed to say you had to recite an incantation, then inject mana or something into it."
The incantation was easy enough, but mana...
Wu Biao, who had been naturally incompatible with all kinds of energy since birth, could not possibly possess mana in his true body.
Moreover, magi in this world could not simply find a book of magecraft and learn it. They needed something called "Magic Circuits" in order to become magi.
Mana in this world was divided into the Great Source, which filled the world, and the Lesser Source, which was generated within living bodies.
And between the Great Source and Lesser Source, needless to say, the Great Source was superior.
The mana produced by a human's Lesser Source and the mana of the Great Source that filled the world were on entirely different levels of power.
No matter what kind of magecraft it was, magecraft using the Great Source could easily surpass magecraft cast by an individual.
Because of this, outstanding magi were skilled at drawing mana from the world.
Much like a filter, a magus used their own body as a conversion circuit, drawing mana from the outside world and turning it into mana that humans could use. That conversion circuit was known as a Magic Circuit.
"I've got it!"
Wu Biao slapped his palm. Just because his body could not store mana did not mean he could not get his hands on some.
Brute force!
This was absolutely what he was best at. Why bother drawing it in? He could just use his physical strength to forcibly grab the mana and control it.
After all...
A nostalgic smile spread across Wu Biao's face. "Come to think of it, it feels like I haven't seen Master Kannonji-dan in a long time."