Uchiha Kirin discovered that when combined with the runes on the Karasuki charger, the barriers he constructed produced strange effects on space-time:
In some barriers, time was accelerated, and objects thrown inside would quickly rot and decay.
In others, time flowed more slowly. Objects dropped into them would fall at an extremely sluggish pace—nearly to the point of being motionless.
Even the speed of thought was noticeably slowed for his Limbo Clones that entered these barriers!
Additionally, a few rare barriers exhibited even more unique properties.
For example, within one such barrier, the motion of all objects inside had been cleverly set into a loop—repeating over and over, resetting to their exact state at the moment the barrier had first been established.
However, this barrier could not transmit energy outward from within. Doing so would consume the barrier's own stability, potentially destroying its ability to reset its internal state.
Fortunately, Uchiha Kirin found a method to maintain such barriers over the long term:
He used Magnet Release.
He crafted several chakra black rods and inscribed sealing runes onto them. Then, using Magnet Release, he continuously recharged the black rods to maintain real-time control over the barrier.
As long as his own energy remained stable, the barrier wouldn't weaken over time.
From this, Uchiha Kirin went on to design a highly lethal type of barrier.
Not only could it be deployed silently and instantly around an enemy using magnetic fields...
But it could also manipulate the flow of time in different areas of the barrier—accelerating his own time while slowing his enemy's—giving him a massive advantage in battle.
In extremely confined areas, the timeflow differences could be made so extreme that it could directly tear the enemy apart!
Thus, Uchiha Kirin successfully improved his own sealing techniques, reaching a near-unrivaled mastery in this field.
He could now use magnetic fields to lay down invisible seals and barriers.
Even more, he could imbue Magnet Release into his chakra chains and black rods to drastically enhance and grant flexible control over barriers.
This was sealing jutsu that could truly be used in combat.
He named it: Mystic Magnetic Seal.
When combined with his six Limbo Clones, even without using powerful amplification methods like the Eight Gates, he could reshape the magnetic environment and instantly deploy barriers and seals...
Allowing him to defeat opponents far stronger than himself.
Though such opponents hadn't yet appeared, the fact that Karasuki was a divine tool created by the Ōtsutsuki Clan implied that there must be even more terrifying figures hidden within their ranks.
Besides, Uchiha Kirin's ultimate goal was to transcend this world.
He wouldn't pass up any opportunity to strengthen himself.
...
Having mastered the Mystic Magnetic Seal, Uchiha Kirin decided to delve deeper into the Dragon Vein—the very force that had brought him into this world—in an attempt to seize control of its time-based rules.
One of his Limbo Clones activated its golden vertical pupil capable of perceiving rules. After an extensive search, it finally located the vague presence of the time rule.
Then, he activated his magnetic field. Behind him, nine Truth-Seeking Orbs flew out and transformed into thousands of black rods. Golden chakra chains from the Uzumaki Clan extended from every part of his body.
The magnetic field around the time rule shifted violently, instantly forming a massive barrier.
However, after several attempts, he found that this rule's power was as slippery as an eel.
It could pass freely through the barrier he had constructed.
At times, it would seem to enter his body—but that was merely an illusion caused by warped timeflow.
"Looks like my understanding of space-time is still lacking. And this new sealing technique isn't perfected yet either."
With that realization, his Limbo Clone retrieved Urashiki's Rinnegan for further study.
Though Kirin already possessed a similar time-reversal divine art, personally dissecting a Rinnegan still brought massive gains.
During this process, he frequently consulted Karasuki about questions related to time.
While Karasuki was merely a sentient construct and didn't understand its own internal principles, it could still project portions of its inner structure for Uchiha Kirin to observe and record.
By using sealing and barrier techniques to analyze and replicate these unique mechanisms, Kirin's understanding of space-time rose rapidly.
...
Meanwhile, his main body—located in the future—also began taking action.
Though the evolution of the inner world within his body was still ongoing, his physical condition had stabilized. He now resided in the area of strongest gravitational pull inside a star.
As his comprehension of space-time deepened, he began to sense the tremendous effects gravity could have on time and space.
So, he deployed two more Limbo Clones.
They shifted their positions relative to the star, trying to detect the subtle differences in timeflow.
With repeated training, his sensitivity to space-time improved drastically. In fact, his main body and Limbo Clones, stationed at different distances from the star...
Were already experiencing the subtle baptism of differing timeflow.
As his Breathing Art of the Sage Path continued to strengthen, these differences became more pronounced. But since the star wasn't a black hole, its gravitational pull wasn't strong enough to trigger massive insights.
"It's gravity, huh... Then what if I used gravitational pull from the Rinnegan? Could that influence space-time?"
After some testing, Uchiha Kirin found that—even when a Limbo Clone fully activated its Rinnegan—at most, it could emit gravitational ripples strong enough to affect a gaseous giant.
But even so, it did have a faint impact on space-time!
...
Back in the past, the Limbo Clone made another attempt.
This time, he didn't just use the improved Mystic Magnetic Seal to lock down the time rule—he also activated his Rinne Sharingan, unleashing gravitational forces hundreds of times stronger than the Rinnegan's.
And this time, it worked.
The time rule was caught. It couldn't escape.
The Mystic Magnetic Seal shrank in size, transforming into countless chains that bound the rule of time.
But just as he was about to absorb the power...
He was frozen in place by the rule itself.
Even though he had mastered space and gravitational powers, combined with magnetic field control, barriers, and divine time-based arts...
Even though he could move within stopped time...
He still couldn't match the speed at which the time rule escaped.
He lost it—again.
...
Time after time, Uchiha Kirin would try to capture the time rule whenever he felt a clear breakthrough in his strength, sealing techniques, or understanding of space-time.
But the rule of time seemed to possess a will of its own—slippery and cunning.
At the most crucial moment, it would always unleash some bizarre divine technique, freezing Kirin in place and slipping away.
Fortunately, each time he broke free of that strange temporal force...
It granted him new insights into time itself.
He eventually learned divine arts akin to time stop, time acceleration, and Time Blade.
At last, Uchiha Kirin's understanding of space and time reached an entirely new level.
He seemed to discover a way to completely separate himself from the timeline—to break free of dimensional constraints...
And forge a path entirely his own.
This, he realized, was the only way to truly capture the rule of time.
Otherwise, as a being bound to the third dimension, unless he possessed an incomprehensibly vast power like that of a black hole...
He would never be able to truly touch the essence of time.
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