Konoha, a secluded training ground.
Two cold flashes crossed. A tall figure and a short one—two people, one old and one young—separated and stood where they were.
"A ninja is, at its core, a combination of Chakra and techniques. For someone your age, your Chakra reserves already far exceed what your body can withstand."
Guo Wang held his Ninja Blade at an angle by his side, standing tall in the center of the training ground. Yet Shisui couldn't sense his presence at all. It was as if he were facing nothing but air and a gentle breeze. Awakening the Mangekyo didn't take into account whether your body could endure it. It forcibly brought out your potential, broke your body's limits, and turned you into one of the Shinobi World's top figures in the shortest possible time.
For an adult, that was naturally a good thing.
But for a child like Shisui, who hadn't yet come of age, having his Chakra reserves increase tenfold in such a short time made him feel as if he might burst. Fortunately, he had a strong will, and the battles he'd fought on the battlefield had tempered him. He hadn't let his newfound strength cloud his mind.
"You came into this power far too early. As your teacher, I have only one demand of you: hone the most basic techniques a ninja has."
A ninja's techniques fell into three categories: Taijutsu, Ninjutsu, and Genjutsu.
Kekkei Genkai, clan secret techniques, and even more mysterious and complex Cursed Seals and Sealing Techniques were all developed from these three foundations. Shisui now possessed the Mangekyo, along with two Dojutsu: "Susanoo-no-Mikoto," which combined offense and defense, and "Betsukami," the strongest Genjutsu. He could already be considered a Kage Level expert without any issue.
But he was still far too young. If anyone learned the full details of his two Dojutsu, even an Elite Jonin could take him down with a little planning.
Take Kakashi, Konoha's most famous prodigy, as an example. The war had certainly played a part, but he'd become a Jonin because the Hokage and several Elders had all agreed that his Taijutsu, Ninjutsu, and Genjutsu were up to the mark. He had the potential to become another White Fang.
As they exchanged blows, Shisui's figure abruptly became three. It wasn't the Clone Technique or a Shadow Clone.
"Body Flicker? For someone your age, that's very good."
The three Shisuis attacked from the front, behind, and above. One wielded a Ninja Blade, another formed Hand Seals, and the last came in with a kick.
Guo Wang didn't use Ninjutsu or Genjutsu. He raised his hand and met blade with blade, then shifted aside with a step to dodge the kick, neatly avoiding a fireball as well. In his hands, these simple Taijutsu movements became more refined than Ninjutsu. No matter how Shisui attacked—even when he multiplied himself into five or seven figures—he couldn't break through that absolute defense.
Before he'd cultivated his Primordial Spirit in his previous life, Guo Wang couldn't use the inherited spells and divine abilities, so he'd relied on his martial arts to travel the Dao Realm. His clashes with the Raikage and Tsuchikage had already made this body adept at fighting. After all, Taijutsu was a skill that worked in any world.
The Three-Tomoe Sharingan in Shisui's eyes spun faster than ever. His powerful perception let him see every one of Guo Wang's movements. His Body Flicker, already at its limit, split into eight figures. At the same time, he unleashed Ninjutsu, Genjutsu, Taijutsu, Kenjutsu, and secret techniques with perfect timing. Their exchange was thrilling to watch, and they seemed evenly matched.
"Do you understand now?"
Just as Shisui multiplied himself into nine figures, Guo Wang swept his Ninja Blade across. It cut through the illusion and came to rest against Shisui's neck.
"My Body Flicker Technique can only create eight figures at most. My eyes can see Teacher's movements, but my body can't keep up."
A crack split the fox mask, revealing Shisui's youthful, fair face. The Sharingan in his eyes had vanished, and he was breathing hard.
In just over twenty exchanges, he'd already given everything he had, aside from using the Mangekyo. Even so, he hadn't made Guo Wang break a sweat.
"That's not the point. The Body Flicker isn't about being as fast as possible. If I gave it my all, I wouldn't be slower than Namikaze Minato, but that isn't my fighting style."
As he spoke, Guo Wang suddenly vanished. The cold blade moved from the front of Shisui's neck to the back.
"So fast!"
After copying the Flying Thunder God, the Space-Time attribute had begun to transform within this body. The result was that Guo Wang had become even faster.
"From now on, come to this training ground every night. I'll train you so your body can find its balance with the Sharingan as soon as possible."
Shisui's biggest problem was that his Sharingan possessed Kage Level power, while his body was still only around the average level of a Chunin or Jonin. His eyes could keep up with Guo Wang's Kenjutsu, Taijutsu, and speed, but his body couldn't. All he could do was create Body Flicker doubles and make up for the difference with numbers.
"If this child grows at a steady pace, then by the time he's eighteen, even Hiruzen may not be his match."
Thinking this, Guo Wang glanced toward a large tree on his right. After confirming the presence there was familiar, he said nothing and disappeared.
Huff! Huff! Huff!
Shisui, on the other hand, collapsed to the ground after his teacher left. He braced himself with one hand and removed his cracked mask with the other, setting it aside as he gasped for breath.
"So this is the power of the old generation. Even without Grandfather's Sharingan, Teacher's Kenjutsu, Taijutsu, Ninjutsu, and Sealing Technique are all among the strongest in the Shinobi World."
As a Konoha Ninja who'd seen the power of Vacuum Infinite Sword on the battlefield, Shisui regarded Guo Wang as the strongest Wind Release user. And after Senju Tobirama's death, Guo Wang had become the head of Konoha-Style Kenjutsu. He'd even trained White Fang, a killing machine.
But Shisui had never imagined that Guo Wang's Taijutsu could be this strong. Even the legendary Leaf Dragon God, Chen, couldn't use Taijutsu to suppress a Uchiha with the Three Tomoe. Guo Wang had not only done so, but had made it look effortless, as simple as drawing a sword.
"Who's there!"
Just then, an unfamiliar, hurried breath reached his ears. Tomoe instantly appeared in Shisui's eyes, and he vanished from where he stood, reappearing behind the stranger.
A Root standard-issue Ninja Blade came to rest against the stranger's back, near his heart. If Shisui hadn't seen the Konoha Forehead Protector, the blade would already have pierced his body.
"I-I'm sorry. My son and I couldn't sleep tonight, so we were running laps around the village and ended up here. We weren't deliberately spying on you and your teacher while you trained..."
"What? There were two of them!"
Shisui's eyes widened in shock as a middle-aged man emerged from behind another tree. He wore a scarf and a tight green jumpsuit, and his beard was scruffy. He kept bowing and apologizing, but his presence was almost identical to Guo Wang's—like air, like a gentle breeze.
If Shisui hadn't seen him with his own eyes, he wouldn't have noticed him at all.
Was this another Taijutsu master like his teacher?
"I'm sorry. Please forgive us. If you don't, we'll run three hundred laps around the village to apologize."
The bowl-cut boy beneath the Ninja Blade had tears streaming down his face. He repeatedly knocked his forehead against the ground.
The older man nearby watched the scene and, for some reason, was moved to tears. They streamed down his face.
"It must be my imagination. There's only one master like Teacher."
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