Hashirama and Madara looked at Leon with clear curiosity on their faces, their eyes asking silent questions, because they did not fully understand what he meant when he said that the technique was not limited to attacking.
In their minds, this combat technique was associated with destruction. It had never occurred to them that there could be other uses, and this made Leon raise his hand to his forehead, then say:
"You two really are idiots. I told you that developing this technique depends on the way you think."
He then gestured with his hand as he explained:
"Think, you idiots. If it can be used for attacking, then it can also be used for defense as a shield. All you need to do is change the frequency of the waves and adjust their shape."
He then extended his hand in front of him, and in an instant, successive thin waves of chakra began to flow from his palm like water. They gathered and layered over one another, forming a transparent layer until they became a shining blue circular shield.
Hashirama and Madara looked at the scene and felt slightly embarrassed that they had failed to understand their teacher's words at first, but their embarrassment quickly turned into excitement, because new possibilities were beginning to open before them.
Leon then continued:
"And don't think that this is where it ends. This is only the beginning. For example, I can do this."
He bent down toward the ground, placed his hand against it, and closed his eyes:
"By sending thinner and lighter chakra waves, I can sense the entire area through them, every movement, every pulse, and every breath, as if the earth itself had become a part of me. This ability gives you complete awareness of what is happening around you and makes it impossible for any enemy to surprise you."
The expressions of Hashirama and Madara became serious, and they exchanged a quick glance, because both of them understood the importance of a technique like this, especially in ninja wars, which were usually characterized by deception, traps, and ambushes.
A ninja with sensory abilities was considered a valuable resource and a very important element in warfare. In fact, it was sometimes the decisive factor that determined the outcome of a battle, because it prevented surprises, exposed hidden plans, and created opportunities for their team.
Now their teacher had shown them another way to obtain sensory abilities, not through an innate talent, but through an innovative application of a technique they had just learned, which made it even more valuable in their eyes.
He then stood up, walked toward them, placed his hands on their heads, and continued:
"And if you can master healing chakra, you will become capable of healing wounds, relieving pain, and completely removing fatigue from the body instead of focusing only on a single injured area."
The two children felt refreshing waves spreading through their bodies, as if they were diving into pure water that permeated every cell and absorbed all the fatigue that had accumulated from their previous training, as though they had just awakened from a deep sleep.
"Although it won't be as powerful as intensive healing, it has the advantage of being able to distribute healing chakra throughout the entire body."
Leon then stepped backward and continued:
"And don't think that these are the only ways to use this technique. The stronger you become, the more and broader possibilities will open before you. But this is the most I can guide you in. As for the rest, you will have to discover it yourselves and develop it according to your own styles. This technique is merely a seed, and how it grows into a tree depends on you."
At that moment, he heard his father's voice in his ear, telling him to stop there, because giving them any more guidance might affect future events and alter their course in an undesirable way, especially since this technique, despite its apparent simplicity, had almost limitless possibilities.
At his current level of power, Leon could use it to accomplish things that were beyond imagination, such as extinguishing a star and causing it to collapse into a black hole with terrifying gravity.
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