Over the next few days, Qingyu devoted most of his energy to practicing the Spirit Transformation Technique.
With the help of the [Kato's Legacy] trait, the once-obscure theory of separating spiritual energy from physical energy gradually became clear.
Qingyu formed the hand seals for the Spirit Transformation Technique.
He could feel his spiritual energy flowing slowly through his chakra pathways.
The spiritual energy within them was much stronger than before he began training.
Qingyu felt that this ninjutsu could also temper his spiritual energy.
After all, to turn his spiritual energy into a spirit body and move freely across a battlefield, he had to be strong enough himself.
Otherwise, it would have been scattered long ago.
Qingyu had a feeling that, if he wanted to, he could let his soul leave his body and enter the outside world.
But in the end, he did not attempt it.
He opened his eyes and let out a long breath.
More training would be safer.
Qingyu thought to himself.
Trying it rashly would be too risky.
Even though his soul was stronger than an ordinary ninja's, Qingyu did not want to take that risk.
If something went wrong with his body, he could repair it with medical ninjutsu at any time.
But if something went wrong with his soul, he had no technique capable of healing it.
My sensory abilities have improved a little, at least.
Although he had yet to fully master the Spirit Transformation Technique, the benefits of practicing it were already showing.
His sensory abilities had improved further during his training, and his sensory barrier covered a slightly wider area than before.
More importantly, Qingyu had begun to glimpse a new possibility.
The essence of the Spirit Transformation Technique was to separate spiritual energy from the body and form an