Although Boruto had casually complained, this training ground was anything but simple.
Even in the future, it matched the facilities of a top-tier academy. But since this used to be Boruto's home, his family's private training field had been upgraded many times, eventually becoming one of the greatest training grounds in the entire Ninja World.
The comment had only been a habitual complaint.
The ground here had been transformed using Earth Release: Earth-to-Steel, making the surface as durable as reinforced metal. Gravity modifiers, chakra barriers, elemental conduits—this place contained every type of training support a shinobi could imagine.
Dodging attacks would trigger the barrier, and the barrier itself could withstand Super Kage–level ninjutsu.
Some parts had even been constructed by Naruto personally.
Boruto and the Raikage stepped forward, each adopting their stance.
Boruto had always been curious about battling the older generation—especially a man like the Raikage, who in the future held great prestige and ultimately died in a mutual kill against a member of the Ōtsutsuki Clan.
Facing such a senior, Boruto's expression grew respectful.
He inhaled deeply and said, "I'm ready."
The Raikage grinned and nodded. "I'm ready too."
Lightning chakra crackled around his body as he added, "Be careful. My attacks aren't weak."
In the span of a breath, the Raikage's chakra erupted. Lightning surged across his body, his hair rising from the static as he entered full battle state. Over the past two years, his strength had skyrocketed—he had already stepped into the Super Kage level.
Boruto shifted into his opening stance.
Then, with a blinding flash of blue—
the Raikage disappeared.
He reappeared in front of Boruto, fist already driving forward.
Boruto pivoted, seized the Raikage's arm, and threw him cleanly over his shoulder.
Boom!!!
The Raikage smashed into the steel ground with enough force to shake the entire arena.
He stood up slowly, twisting his neck with a pair of loud cracks.
Staring at Boruto's young face, he exhaled.
"…Good kid. I really underestimated you."
Then he lifted his arm.
"Lightning Release: Lariat!"
Lightning sharpened along his palm like a blade as he charged directly at Boruto.
Boruto let out a quiet chuckle. A Rasengan formed in his hand—but instead of rushing forward, he threw it like a projectile.
Sasuke, watching from the sidelines, smirked.
"Looks like Boruto truly inherited your techniques, Naruto. He's even surpassed you—he can throw the Rasengan freely."
Naruto shrugged lightly. "Times change. So do ninjutsu."
But then Naruto noticed something unusual.
Boruto's Rasengan… wasn't the same.
Instead of a single sphere, innumerable Rasengan appeared—each shaped like a spinning shuriken. They scattered around the Raikage, forming a floating ring.
Boruto snapped his fingers.
And the air erupted.
Boom! Boom! Boom!
Chains of detonations burst outward. Flames and smoke engulfed the Raikage.
"Uncle Raikage, don't hold back. My strength isn't that weak."
The Raikage burst out of the flames. He was mostly unharmed, but his hair was singed and his appearance absolutely disheveled.
His expression shifted—this boy wasn't someone he could toy with.
He exhaled sharply, shedding his restraint.
A bolt of lightning split the sky, streaking directly at Boruto.
Boruto dashed forward at equal speed, his sudden acceleration surprising even the Raikage.
The two collided in rapid Taijutsu, exchanging blows at speeds that most shinobi couldn't even follow.
Boruto's physique looked slender, but his strikes were fierce and fluid.
"Don't underestimate Boruto," Future Sasuke said calmly. "In the future, he's known as the strongest of his generation."
Letting the present generation witness real, tangible proof was far more convincing than illusions or stories.
"What kind of fighting style is that?"
Neji narrowed his eyes as he watched.
Both fighters were using pure Taijutsu, yet Boruto's movements flowed like water—every attack smooth, refined, and unpredictable.
And the techniques seemed unfamiliar.
Exquisite, but strange.
"This is a combat style," Future Sasuke explained.
"A modern fighting system developed in the future. It fully optimizes the user's physical ability—speed, power, movement, and technique—allowing them to draw out their complete potential."
Everyone exchanged stunned looks.
To think such a refined fighting method existed in the future…
It was clearly developed for pure combat efficiency.
"Don't underestimate it," Future Sasuke added. "It's considered top-tier among the modern shinobi arts."
No one dared underestimate it.
After all, they were watching the Raikage—a man known for overpowering everything in his path—being pressed down by a boy.
Meanwhile, in the middle of the battle, the Raikage felt a creeping sense of disbelief.
Why did it feel like every one of his attacks… was being read?
If he didn't go all-out, what would happen to his dignity as an elder?
He clenched his fists.
No more holding back.
At this point, the Raikage finally entered full combat mode.
Lightning burst from his body like a raging storm, the upgraded Lightning Release Chakra Mode wrapping around him like living armor.
He stepped forward once—
—and the steel-hard ground dented under his foot.
Then, with a flash, he swung a lightning-forged blade of chakra.
Boruto dodged instantly, and the blade sliced through the reinforced training ground as though it were soft tofu.
Boruto's eyes widened at the destructive force—
but before he could even comment, a wild, almost manic gaze appeared right before him.
The Raikage was already at his side.
Boom!!
Boruto's body was launched through the air.
The onlookers tensed in concern, but Future Sasuke remained calm.
"No need to worry. Boruto is far stronger than you think."
As if proving his words, Boruto slowly stood up.
Before everyone's eyes, his injuries visibly healed.
"What—?"
Shock rippled through the group.
But Naruto had already noticed the truth.
This was the innate regenerative trait that came from his own special bloodline.
Boruto raised his hand. A massive chakra shuriken formed, radiating destructive power as he hurled it at the Raikage.
Seeing the threat, the Raikage thickened his Lightning Armor even further.
He charged straight through the attack, appearing before Boruto in an instant.
The Rasenshuriken detonated behind him with a deafening blast—
—but Boruto had already vanished in a puff of smoke.
A Shadow Clone.
The Rasenshuriken released wave after wave of energy, but such attacks were no longer enough to damage the current Raikage.
As long as he wasn't caught off guard, his defenses were overwhelming.
Then—
Boruto appeared and launched a strange forward strike…
yet it looked like he didn't actually do anything.
The Raikage's brows tightened.
An intense sense of danger exploded in his mind.
He rolled away on instinct.
BOOM!!
A deep crater burst open where he had just been.
"What was that!?"
Everyone stared in confusion.
Future Sasuke stepped in to explain once more.
"That is Boruto's self-developed technique: the Vanishing Rasengan—or perhaps more accurately, the Invisible Rasengan."
And more importantly—
Everyone noticed something terrifying.
The technique contained traces of Natural Energy.
Boruto had already reached that level?
The Raikage, seeing this, stopped holding back.
He unleashed his strongest attack—
an overwhelming strike that doubled the pressure on Boruto, forcing the future youth to brace himself.
The two clashed violently, neither immediately able to overpower the other.
A fierce stalemate formed.
"Who do you think will win?" someone asked excitedly from the sidelines.
"Hard to say. The Raikage has raw power and years of combat experience.
But Boruto's fighting style is bizarre—his abilities are top-tier. It's hard to judge."
Another elder stroked his chin thoughtfully.
"Why don't we start a betting pool?"
A loud smack followed.
"That's enough, Grandpa!"
The crowd turned.
The offender was—of course—Senju Hashirama, currently rubbing his head after Tsunade hit him.
"Tsunade has grown up… but she's also become more violent," Hashirama muttered sadly.
Second Hokage Tobirama pushed up his sleeve.
"Brother, you seem to be forgetting whose son Boruto is. The boy possesses the Uzumaki bloodline. In terms of raw chakra reserves, he holds the advantage."
Everyone nodded.
But the Raikage on the field was no pushover.
After exchanging blows for a while, he had already begun to adapt to Boruto's strange, fluid fighting rhythm.
Boruto's techniques had not yet reached their ideal form—they had not fully transitioned between tangible and intangible, nor achieved true adaptability.
It was clear to all the masters present:
This modern combat method existed to help the user perfect their own fighting style.
Its ultimate goal—to bring Taijutsu into a realm of complete freedom.
Its principles were astonishing.
Many of the elite shinobi watching felt a strange excitement rising.
If they could learn even part of this future combat system…
Their strength would increase by at least 30%.
And so, everyone watched with eager eyes as the battle intensified—while the future of the Ninja World unfolded before them.