In the center of the volcano crater-like terrain stood a pillar with a sealing array drawn on it. In the middle was an eye-like activation switch. A trace of diluted purple Chakra flowed from this switch toward the sky.
It would pass through various equipment in the towers, distributing chakra to where it was needed.
Rather than a seal, it was more like a device for using the Dragon Vein.
'Even the energy required to run thousands of towers needs to be diluted to this extent before use. The power contained in the Dragon Vein is truly immense.'
The Dragon Vein's power was undeniable. Even from a distance, one could sense the might contained within the magma-like Chakra, akin to a volcano before eruption.
And its condensed state was something only Tailed Beasts could match.
But although Tailed Beasts are aggregates of Chakra, their bodies were physical entities created by the Sage of Six Paths using Yin-Yang Release Techniques, completely different from the Dragon Vein's purely powerful and condensed state.
The Dragon Vein was far stronger than Tailed Beasts.
But this was just sensory perception. After specific calculations, one would find the Dragon Vein's power far stronger than imagined.
The Dragon Vein itself was condensed into a liquid state like magma. Yet the Chakra supplied to run Roran city was diluted to a gaseous state… thin as a thread, transparent as smoke.
That such a small amount of Chakra was enough to run such an advanced metropolis highlighted the Dragon Vein's power.
'It's said the Dragon Vein's Chakra is infinite, but it can't be infinitely large. Otherwise, a part of infinity would still be infinity, making dilution impossible.' Ryuji took out a straw, drew a segment from the diluted Dragon Vein Chakra, and injected it into the circular device on his chest.
This circular device was the energy core of his exoskeleton armor, capable of storing and detecting Chakra.
As Chakra was injected, eight signal lights on the circular device lit up, each a different color.
'It also contains Natural Energy... Is it Senjutsu Chakra?'
Seeing this, Ryuji slightly frowned.
These eight signal lights represented the eight Chakra Natures: besides the common Yin, Yang, Wind, Fire, Lightning, Earth, Water, there was also the Senjutsu Nature incorporating Natural Energy.
All eight lights being on indicated the Dragon Vein Chakra possessed these eight natures.
However...
'Possessing Natural Energy doesn't necessarily mean it's Senjutsu Chakra. It could also represent naturally born Chakra, like the Ten-Tails itself, a form of Natural Energy.'
Ryuji recalled the movie. Mukade's puppets had many Dragon Vein Chakra Cannons, directly using Dragon Vein Chakra as energy attacks.
Many people had endured such attacks.
If it were Senjutsu Chakra, even if these people didn't die, their bodies would mutate.
Ryuji had researched Senjutsu Chakra and knew how to refine it, so he understood how strongly Senjutsu Chakra affected life… no, all things.
Whether elemental attributes, steel weapons, or flesh and blood, as long as Senjutsu Chakra was applied, they would receive far greater enhancement than with ordinary chakra.
But precisely because of this, it was hard to control.
Even those proficient in Sage Arts would undergo some physical changes, let alone ordinary people.
Being hit by pure Senjutsu Chakra would definitely turn one into a monster.
'Specific details require analysis by the Observation Device. But it can be confirmed it's not Senjutsu Chakra, or at least not purely Senjutsu Chakra. It also doesn't possess time-travel power... So, Naruto and the others' time-travel was due to the seal.'
The Dragon Vein seal was originally passed down through generations of Roran's queens.
But due to Mukade, the Dragon Vein eventually went out of control. The Fourth Hokage added another layer of seal over the original.
Although the exact seal was unknown, the key was a kunai used by the Fourth Hokage for his Flying Thunder God Technique.
That was a Space-Time Ninjutsu.
Although the Fourth Hokage couldn't use it to time-travel, the Dragon Vein with infinite Chakra might be different.
"Hey, what exactly do you want me to do?"
The girl's voice interrupted Ryuji's thoughts.
He looked up at the dissatisfied Queen of Roran, showing a faint smile. "You want to attract guards by sealing the Dragon Vein, right?"
"N-no, I don't."
The Queen of Roran was still an inexperienced girl, not good at lying.
Her stammering tone and flushed face betrayed her true thoughts.
But Ryuji didn't mind. He smiled and said, "Although there are many things I'd like to discuss with you, if time-travel is caused by the seal, then as long as I don't change the objective, it might trigger time correction."
"Of course, it might also cause world division, developing a parallel timeline."
"But personally, I dislike trouble. Better to wait until the time comes, to avoid having to explain everything again later."
"Huh? What do you mean?" Sara was confused.
"I mean, please seal it."
"Huh?"
"What 'huh'? Hurry up and seal it!"
"But didn't you say sealing would attract guards?"
"Stop nagging. Just do it quickly."
"Oh, oh!"
The queen hurriedly nodded, then went to the center of the seal.
There was a round box opened about one-third. Dragon Vein Chakra was being diluted and projected from this box.
At the four corners of the array were four female statues, each emitting faint purple light shining on the round box.
Sara half-knelt before the round box, placing her hands on it.
Without her doing anything, the light from the four statues faded. Inside the round box, a purple sphere lit up.
This sphere rotated inside, like an eyeball observing Sara, then slowly closed.
Click!
The round box closed. The sealing array beneath their feet also vanished. Dragon Vein chakra supply was cut off.
Ryuji stood aside, carefully observing the sealing array's operation, not missing a single detail.
Then, body swap.
Using the Sea of Consciousness, Ryuji could communicate with any of his puppets over long distances, even swap bodies.
But this technique had a range limit, about 350 kilometers.
However,
On the way to Roran, Ryuji had placed a Scarab puppet every three hundred kilometers. Using these Scarab puppets as signal relay stations, he achieved ultra-long-distance mental transmission.
Ryuji now swapped bodies with Aka, immediately heading to the underground workshop to input the sealing array and its closed state into the Observation Device, activating the analysis function.
As long as he could analyze the principles, he could deduce how to use the seal through simulation, even create better seals.
Then, he could control the Dragon Vein.
However, with only the sealing array and its closed state, without knowing any principles, the analysis process might take a while.
But it didn't matter. There were still unresolved matters in Roran. Here, Aka could watch over things.
But the moment Ryuji swapped back, a whistling sound of air came from above.