No matter how simple a spell is, the person cannot use it if he isn't compatible.
"But that doesn't apply to me obviously, I'm just built different." I said, continuing the story.
Well, that isn't exactly how the individual unique ability came to existence, it has it's own properties and not even their family members or descendants can use.
Well we discussed about the Heirloom Magic that can be passed on generation to generation, but for common folks that weren't high ranking nobles to learn magic was only one way.
A contract with the devil... Is what they say, but it's probably bullshit and maybe some nice noble just helped them out and each of them just kind of evolved in using magic.
But one unbelievable thing that did happen is a contract.
A contract with the Zodiac emperor with a common man that was living in poverty before this.
This age of magic completely revolutionised the entire course of history as people were in shock.