Under the stimulation of the Lightning Style Chakra Mode, the opponent's nerve reaction capability may have already reached an inhuman level.
"Let's call it a day, Kakashi, you're already exhausted now."
About half an hour later, Kakashi's stamina gradually couldn't hold up, panting heavily, his legs standing and his arms holding the knife were trembling slightly.
It was evident that his overall energy and spirit had declined to a level unsuitable for continued training.
Kakashi didn't force himself, and sat directly on the ground, gasping for air.
"Your growth these days is impressive; at this rate, you can soon progress to the next stage of White Fang swordsmanship training."
Hakushi said this.
"But I still can't touch your body."
Kakashi forced himself a little.
"Don't rush things like that, every human body has its limit. For you, now is the stage for building a foundation, not the time to crave powerful strength. Only a solid foundation can elevate your potential."
"Is that so?"
Kakashi glanced at the White Fang Short Knife in his hand.
"Moreover, your swordsmanship has reached the limit acceptable at your age for now. Continuing to break through isn't necessary; your body can't support it. Next, you'll need to learn the nature transformation of chakra. What is your chakra attribute?"
Hakushi asked.
"Lightning and Earth."
"Dual attributes, huh? And one of them is the highly piercing Lightning Style. Perhaps you might be more suited to swordsmanship than Sakumo-sensei."
In the escape techniques, Lightning Style is the fastest type and is most suitable for pairing with Taijutsu.
"Let's not bother with Earth Style for now. Next, I'll teach you the technique to master the nature transformation of Lightning Attribute Chakra, to perfectly combine it with your Taijutsu and swordsmanship. This way, you'll face no bottlenecks on your path to becoming a Jonin. You'll also get closer to your target."
Saying this, Hakushi glanced at Kakashi.
Kakashi bowed his head and instinctively tightened his grip on the White Fang Short Knife.
"Indeed, getting one step closer to that 'target'..."
◎
After parting with Kakashi, Hakushi headed back to the Uchiha Clan Land.
Then proceeded towards the underground lab.
Kakashi's training is temporarily not a concern. The most important task now is to rescue the Uzumaki Clan remnants held in the Hidden Grass Village and bring them back to the Land of Demons.
"It's been a month already, they should be coming out soon..."
Hakushi muttered to himself as he walked down the steps.
In a corner of the underground lab, there were two large standing glass cylinder devices for cultivating his 'clones'.
This time, he created two clones.
Due to the complexity of installing the Immortal Technique system, and their bodies' requirement to harness the strong Immortal Technique, the time taken to create these clones was much longer than the creation cycles of Earth General and Shadow Dancer.
Although Earth General and Shadow Dancer have also been upgraded with the Immortal Technique system and had performance breakthroughs, in their initial forms, the newly born clones this time undoubtedly have superior performance.
"It's a pity I don't know the legendary Yin-Yang Style that could create everything, or it would have been done faster..."
Though he incorporated Yin and Yang Attribute Chakra while creating the clones, respectively using Yin Style and Yang Style, Hakushi understood this was not the application of Yin-Yang Style.
Because Yin Style and Yang Style are separate entities, whereas Yin-Yang Style is a comprehensive term, capable of creating form out of nothing, and giving life force and soul.
Due to not being able to achieve the creation level of the Yin-Yang Style, Hakushi used other means to complement it.
Using Natural Energy as life energy, and his soul fragments as the soul of the clones.
Yin Style and Yang Style were mainly utilized to mold materials, forming vessels that could accommodate the Natural Energy and his soul fragments.
However, Hakushi has not heard of anyone in the current Ninja Realm who can use the Yin-Yang Style; it might have already been lost.
He learned of this secret technique from scant mentions in the Uchiha's records.
Not dwelling further on the Yin-Yang Style, Hakushi approached the two cultivation devices, peering through the glass at the clone creations inside.
The shadow within him began to bulge into an entity, as if sensing something terrifying was about to emerge.
When about to form the entity of Shadow Blade, Hakushi spoke to the Shadow Dancer inside his shadow: "Don't worry, they are your sister and brother."
Upon hearing this, Shadow Dancer inside the shadow halted, withdrawing the forming entity of Shadow Blade back into the shadow without a sound.
Seeing Shadow Dancer calm down, Hakushi was relieved.
Turning back to the cultivation devices, he saw the two clones inside with embodied forms opening their eyes.
One of the clones gave off a vibe like a cold, mechanical entity, running according to pre-set programs.
Invisible waves emanated from those inorganic eyes, raising a gentle breeze inside the lab, flipping the pages on a nearby desk.
Boom.
Both glass devices fractured simultaneously.
The fluid saturated with Natural Energy splashed everywhere, leaving the floor wet.
Hakushi already stepped back a few steps the moment the glass devices shattered, to avoid getting splattered by the liquid.
He watched ahead as two figures, one larger and one smaller, jumped out from the shattered cultivation devices.
One figure stood firmly on the ground drenched with liquid, but on closer inspection, her feet did not touch the ground; there was a hovering gap, indicating she was actually floating.
She had long black hair cascading down smoothly and delicately.
Her elongated body, with perfect proportions, donned a traditional witch's attire, white above and red below.
The hands exposed from the white sleeves were as white as jade, naturally hanging down.
With a face as beautiful as a crafted artwork, she appeared to be around sixteen years old, seeming older than the Shadow Dancer.
In her eyes, concentric rings expanded outward.
The exterior of the pupils were cyan, merging with an inner deep purple, holding a mesmerizing power.
Despite breathing, she left an impression akin to a lifeless cold corpse, or perhaps an emotionless machine.
On her slender shoulder clad in white fabric quietly perched a four-legged creature, somewhat resembling both a cat and a beast.
This four-legged creature was entirely black, had a spiral horn on its head, with azure blue eyes. On its jet-black skin flickered blue electric light, making its presence hard to ignore.
The creature laid quietly on the witch girl's shoulder, forming a complete entity with her.
Hakushi first glanced over the four-legged creature on the witch's shoulder, then shifted his gaze to the witch girl, with a satisfied smile on his face.
"Welcome to your birth, Raidenmaru and... Amano-Onna. Although it's inconvenient, I have a mission and I hope you two can take a trip. You two have no objections, right?"