Seimei wanted to check his initial spatial awareness range before developing it further as he studied the Flying Thunder God Technique.
As for the way to check the maximum range of his current spatial awareness…
That was easy.
"Let's go to the forest behind the Hokage Rock."
"I will mark several trees with my Flying Thunder God Mark. Then I will move away from them, ten meters at a time, and check if I can still sense them clearly after moving far away from them."
"The distance at which I began to struggle to sense the mark's spatial coordinate is the range of my current spatial awareness."
Seimei looked at the condensed mark in the parchment on top of his table with anticipation.
However, before he could go out to test his spatial awareness range, he had to do something else.
Seimei moved his gaze away from the parchment and looked at his palms.
"First, I need to imprint the complete sealing formation of my Flying Thunder God Mark on one of the free tenketsu of both of my palms."
"The seal should be able to manifest its condensed version and the expanded version whenever I want, without any delay."
"I will also need to add a concealing runic structure to the main seal to make sure the seal stays invisible to the naked eye before I imprint the Flying Thunder God Mark in my tenketsu. Otherwise, wiping out the current mark, only to add its modified version later, would waste a lot of my time."
"After all, the number of tenketsu in my palm is limited. I also want to engrave a few Fuinjutsu Battle Formations on several tenketsu of my palms later."
"Can't waste them. I don't dare to waste them at all."
Seimei let out a dry chuckle before sighing.
As a Fuinjutsu Grandmaster, he could create seals and runic structures in the thin air using his chakra.
But creating Fuinjutsu seals in the air takes time.
Granted, he could create and use common Fuinjutsu seals under B-rank almost instantly, even without imprinting them.
However, creating and activating B-rank Fuinjutsu Seals takes about 1-3 seconds without imprinting them in his tenketsu.
As for A-rank seals and S-rank seals, they would take even longer to create using only chakra, without imprinting them.
That was why most Seal Masters and Fuinjutsu Grandmasters often imprinted their most used seals and crucial sealing techniques in their tenketsu, especially within the tenketsu of their palms and fists.
To cast complex sealing techniques instantly, the Fuinjutsu experts had two options.
One: Drawing the seal on a special talisman or paper. Later, the ninjas and sealing experts can channel their chakra into the seal to activate the technique.
Two: Imprint the entire sealing technique, including the runic structure, in their tenketsu. To imprint the sealing technique in your tenketsu successfully, you need to draw the correct sealing technique using your own chakra and merge it with your chosen tenketsu or a series of chosen tenketsu.
The more complex the sealing technique, the more tenketsu you would need to completely imprint the seal successfully.
Fortunately, even the most complex A-rank seals and a good portion of S-rank seals only needed one tenketsu to imprint them.
Of course, that was possible entirely because of the superior imprinting techniques described in the Uzumaki Sealing Technique's scrolls.
Without a refined imprinting technique as efficient as the Uzumaki Sealing Technique, even the easiest A-rank seals might need more than one tenketsu to imprint the seal successfully.
What could Seimei even say?
Being in an elite ninja clan with several advanced inheritances, secret techniques, and legacies indeed felt good.
If he were adopted by a civilian family instead, wouldn't he have to grind one mission after another to get access to powerful techniques?
And even then, several legacy techniques would be entirely out of reach unless he became a disciple of a powerful ninja with a deep background or married into a big ninja clan.
Indeed, cheating felt good.
And cheating while becoming a young master of a clan like the Senju clan was even better.
Just when his thoughts were becoming increasingly brazen, Seimei shook his head and refocused on his current job.
"For now, let's focus on adding the concealing runic structure with my Flying Thunder God Mark."
"Focus, Seimei, focus!"
With that, he put a blank parchment on his table, picked up the fountain pen filled with special chakra-infused ink, and began to draw the modified seal for his Flying Thunder God Mark.
In the end, Seimei spent the entire day tweaking his Flying Thunder God Seal before finally imprinting the sealing mark on both of his palms.
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The very next day, Seimei had already stepped into the forest located at the back of the Hokage Rock.
This forest wasn't too dense. But it was still covered in resilient, towering trees.
Under the morning sun, savoring the cool breeze, Seimei looked at the trees around him and grinned.
He had already marked several trees with his Flying Thunder God Mark.
He had already tested the maximum range of his spatial perception and awareness.
And it was actually pretty big.
Seimei could clearly feel all the Flying Thunder God Marks within a radius of twelve kilometers.
The range of spatial awareness of a genius like Senju Tobirama was five hundred meters at best when he first tested it.
But Seimei had completely outmatched him.
Was it the space-time talent perk that comes with a potent Otsutsuki bloodline?
Well, it didn't matter.
Right now, he could only say that he felt amazing.
With enough training and a better understanding of the space and spatial fluctuations, he could enhance the range of his spatial awareness by leaps and bounds pretty fast.
"My spatial awareness is working perfectly."
"Even with all the obstacles, I can sense the exact location of my Flying Thunder God Mark with a radius of twelve kilometers.
"I can already feel it."
"I can now perform the Flying Thunder God Technique—First Step."
That's right.
The Flying Thunder God Technique was divided into several steps or proficiency levels.
The First Step: As long as you can teleport to your stationary Flying Thunder God Marks with ease, it means you have mastered this level. However, if your Flying Thunder God Mark is on the move, you can't attempt the space-time jump accurately. In such cases, the technique may even fail.
The Second Step: You can teleport to the location of a dynamic or non-stationary Flying Thunder God Mark with ease. It is at this stage that this technique becomes a true nightmare for the enemies without talent for spatial perception.
Of course, there were other stages, such as the Flying Thunder God Technique—Guiding Thunder, which you could use once you master the technique well enough.
Now, why was Seimei so sure that he could attempt to use the technique's first step phase without any issue?
[Flying Thunder God Technique LV2 (88 / 500)]
[Techniques Unlocked: Flying Thunder God Technique—First Step]
As soon as his Flying Thunder God Technique reached LV1, he had already unlocked the First Step of the technique.
However, he didn't dare to teleport himself at that time.
So, he kept teleporting inanimate objects to his marked locations to raise his proficiency in this technique.
And since reaching LV2, he could already teleport objects with lesser spatial fluctuations. The teleportation process also felt more effortless, smoother, easier, and consumed fewer units of chakra.
"Although it's pretty good, let's play it safe."
"There is no way I am teleporting myself unless the technique reaches LV3 at the very least."
"After all, that's exactly when you become relatively proficient in the technique, enough to use during combat situations without worrying about the technique backfiring or failing due to nervousness or external pressure."
"LV3 is basically the benchmark for using the technique masterfully during a life-and-death battle."
"Anyway, I have enough chakra. Let's grind the technique to LV3 by the end of the day."
And so, Seimei entered an intense grinding session once more.
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