Seeing Danzo's energetic appearance, Sarutobi Hiruzen almost laughed out loud.
"Compete, compete harder!"
He cleared his throat and decided to add another bucket of oil to Danzo's fire.
"Danzo, your idea of building a reservoir dam is excellent."
Sarutobi Hiruzen first gave his full affirmation.
Then, his tone shifted, and a mysterious smile appeared on his face.
"But, it has more than just this one function."
"Hm?"
"Hiruzen, what do you mean?"
Uchiha Kagami and Akimichi Torifu also looked over curiously.
Sarutobi Hiruzen did not answer directly. He just picked up his sake cup, took a leisurely sip, and then said slowly in a seductive tone, "Danzo, have you ever thought about it?"
"Water falling from a height produces a huge impact force, right?"
"Yes," Danzo nodded subconsciously.
"Then what if we create a special device that allows this huge impact force to continuously strike it?"
A light that Danzo had never seen before, as if he could see through the origin of the world, shone in Sarutobi Hiruzen's eyes.
"Do you think it would produce a brand-new energy, like Lightning Release, that can be stored, guided, and even... light up the entire Konoha?"
Brand-new... energy?
Light up... the entire Konoha?
Danzo, Uchiha Kagami, and Akimichi Torifu were all completely stunned.
A new world they had never imagined, full of infinite possibilities, seemed to be slowly unveiling itself before them.
————————
Early the next morning, Hokage's Office.
After dealing with a few documents, Sarutobi Hiruzen pressed the summons bell on his desk.
"Lord Hokage," an Anbu appeared silently in the center of the office.
"Summon Orochimaru to see me."
"Yes."
In less than ten minutes, Orochimaru, dressed in white and with a pale complexion, appeared at the office door.
He pushed up the non-prescription glasses on his nose, his eyes carrying their usual inquisitive look.
"Sensei, you sent for me."
"Mm, sit down."
Sarutobi Hiruzen pointed to the chair opposite him, signaling him to sit.
Orochimaru sat down as instructed, his back straight.
Ever since being completely won over by Sarutobi Hiruzen's "ABO blood group system" theory last time, his reverence for this teacher had penetrated deep into his bones.
In his view, Sarutobi Hiruzen was no longer a simple ninja, but a researcher at the forefront of the world.
"Orochimaru, how do you understand the word 'energy'?"
Sarutobi Hiruzen didn't beat around the bush and directly threw out a seemingly simple but highly philosophical question.
Energy?
Orochimaru was stunned for a moment, then fell into deep thought.
"From the perspective of ninjutsu, energy is chakra."
He analyzed calmly, "Chakra, formed by the combination of physical energy and spiritual energy, is the basis for releasing all ninjutsu. By changing the nature and form of chakra, we can transform it into various forms of destructive power such as Fire, Water, Lightning, Wind, and Earth. Therefore, energy is a force that can be transformed and utilized."
"Well said."
Sarutobi Hiruzen nodded approvingly.
As expected of Orochimaru, he was quick on the uptake.
"Then, Orochimaru, have you ever thought..."
A guiding light shone in Sarutobi Hiruzen's eyes. "Besides chakra, is there another, more fundamental, more universal form of energy in this world?"
"Another form of energy?"
Orochimaru's breathing slowed down.
His truth-seeking brain began to work at high speed.
In nature, lightning can produce light and heat, water currents can move boulders, wind can lift houses... These all seem to contain some kind of power.
But most of this power cannot be directly utilized.
"Sensei means..."
Orochimaru's voice carried some doubt.
"That's right."
Sarutobi Hiruzen looked at him and said slowly, "I recently came up with an interesting hypothesis."
"This hypothesis is that all movement in nature, such as the impact of water flow, the blowing of wind, is essentially a release of energy. And this energy, under specific conditions, can be transformed, stored, and even... guided."
"It's like..."
Sarutobi Hiruzen picked up the teacup on the table and drew a circle in the air. "We release a Water Release jutsu to strike a continuously rotating giant scroll. This scroll rotates at high speed due to the impact of the water flow. Then, can the power generated by its rotation also be turned into another form of energy?"
"Like... electricity?"
Boom!
These words were like a thunderclap exploding in Orochimaru's mind.
Water... impact... rotation... transformation...?!
Right, just like the tiny lightning generated by friction...
A huge sense of excitement instantly welled up in his heart.
Seeing Orochimaru's energized appearance, Sarutobi Hiruzen knew the fish had taken the bait.
He took out a sketch he had drawn overnight from his drawer and pushed it in front of Orochimaru.
On the sketch was a highly complex device.
The central axis of a wheel was connected to a strange cylinder made of countless metal coils and magnets, looking like a giant sealing scroll.
The other end of the cylinder was connected to two thick metal wires that extended into the distance.
"This is..."
Orochimaru picked up the sketch as if holding a peerless treasure. His fingers gently stroked the drawing; every line, every symbol fascinated him.
"I call this the conceptual drawing of the Energy Transformation Jutsu."
"That wheel impacted by the water flow, I call it a water turbine. The cylinder behind it, composed of coils and magnets, is the core. I call it a generator. And the energy it produces, I call... electricity."
"Electricity?"
Orochimaru chewed on this unfamiliar word repeatedly, his eyes filled with fanaticism.
"That's right, electricity."
Sarutobi Hiruzen nodded. "It's like Lightning Release chakra. It can emit light, generate heat, and be used to do many things."
"Sensei... this..."
Orochimaru looked at Sarutobi Hiruzen, the admiration in his eyes reaching its peak.
If the previous blood type system had only given him a glimpse of the tip of the iceberg of science.
Then, this Energy Transformation Jutsu before him directly revealed the mysteries of nature to him.
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