The aura Rishi wanted to learn was sword aura, a type of weapon-based aura that enhances the damage of sword skills.
Each person's aura was different from others, as it was a manifestation of his spiritual power, emotions, and life force transformed into energy and brought to the world physically by extreme mental focus.
Extreme mental focus was the most important thing for using Aura, and while it was very difficult for others, for Rishi it was not that hard due to his broken passive skill. After going through all the theories, he found a step-by-step way to manifest his aura.
1.) Identify spiritual power, Life Force, and emotions.
2.) Imagine an aura and try to bring it to the physical world with extreme focus.
3.) Control it and transfer it to his sword.
While this looked easy on paper, only Rishi knew how complex it was once he started looking for spiritual power.