Aura.
It is a type of energy that is generated by the warrior's own body to strengthen itself.
And it is a unique type of energy that would always carry the signature and traces of the user.
It is a very crucial asset for a warrior that is fighting since it enables the fighter to reach higher strengths.
However, for those who have just awakened their aura, controlling it is a lot harder than for those who started their path as a mage.
As the one-star rank knight, a person's aura would only envelope their whole body.
Specifically, strengthening a place is not an option at that time since the aura is just awakened.
With reaching the two-star rank, not only a person's strength of aura would increase, but their control over it would also increase as well.
However, still making complex techniques and using your aura with a lot of paths would be impossible, being still not flexible enough.
