What made this power system the most popular wasn't even related to the "core" thing.
Rather, it was about the fact that this power system could include, or adapt to, anything.
It's to the point that, if one wanted, it could be as straightforward as they liked… or as complex as they could possibly imagine.
If someone just wanted to become a pure warrior, focusing on brute strength and destructive power, they could.
If they wanted to wield flames with explosive techniques, or manipulate others with illusions and hypnosis, or even tap into things like time, space, or gravity…
This power system could do it.
As long as it fell under the attribute they trained in, or attributes, since some techniques could have multiple ones… then, it's possible.
That was the point.
One just needed to choose an attribute or a bunch of them early on and stick to it.
Because once someone set off on a path, changing their mind later meant starting over from zero.