In the span of a single second—no, in an even shorter unit of time—the two had exchanged dozens of blows.
There were no magnificent flashes of Cursed Techniques, no lengthy incantations, only the most primitive, direct, yet ferocious exchange of close-quarters combat and fundamental Cursed Energy application, embodying the ultimate understanding of power held by both sides.
The two figures zipped, flickered, and collided across the ground that was constantly breaking, sinking, reconstructing, and collapsing again.
Their trajectories were no longer simple straight lines or arcs, but resembled interwoven lightning bolts, shifting left, right, up, and down.
At times they engaged in close-quarters grappling, fists connecting with flesh, emitting dull, heavy thuds.
At other times, they abruptly created distance only to collide again at even greater speeds, kicking up towering pillars of dust and scattering violent Cursed Energy.
The ground wailed beneath their feet. Solid rock shattered like brittle biscuits, cracks spreading like spiderwebs, only to be blasted into deep pits by the next impact.
Dust and debris were swept up, forming small tornadoes, which were then torn apart in the next moment by an even stronger field of force.
Cold sweat beaded on Fushiguro Megumi's forehead. His Ten Shadows Technique allowed him to summon shikigami, and his dynamic vision far surpassed that of ordinary people, but even now, he could barely capture two blurry afterimages and constantly erupting impact points, completely unable to discern the specific movements.
Yuji's mouth hung open, his fists tightly clenched. His pride in his physical conditioning and athletic prowess seemed clumsy and inadequate before these two.
The other students who rushed over upon hearing the commotion were utterly dumbfounded. This was not the 'combat' they understood. This was two human natural disasters dancing in close proximity, shattering the earth with every step.
"Interesting..." Satoru shook his slightly numb hand, analyzing the scene with his Six Eyes at full capacity.
"Domain Amplification, huh? Using that move against my Infinity is certainly a direct counter. But what truly intrigues me is how you manage to keep up with my speed in pure physical combat, even counterattacking, using this weak body?"
Through the insight of the Six Eyes, Satoru clearly 'saw' that Sukuna's Cursed Energy reinforcement of Utaha's physique had reached an astonishingly precise level.
It wasn't simple Cursed Energy coating or brute-force enhancement, but rather an infusion that seemed to have grasped the mechanical structure of every muscle fiber and every bone, injecting Cursed Energy into every point of force generation in the most optimized and efficient manner, thereby squeezing the body's potential to its absolute limit.
Even though it was just a very basic Cursed Energy reinforcement technique, Sukuna could achieve this level?
Controlling Utaha's face, Sukuna revealed a strange smile mixing arrogance with the desire to share 'new knowledge'.
"A thousand years ago, there wasn't such detailed human anatomy or kinesiology. The human body is an exquisite and complex toy. The knowledge of this era has given me a new understanding of how to wield power. How to drive muscles more efficiently, how to make bones withstand greater impact, how to minimize Cursed Energy consumption... these details are what this era's science taught me."
Of course, he would not mention that the foundation for achieving such extreme microscopic control was his Kamiutsushi, capable of discerning the weak lines and energy flows of everything. Without the unimaginable insight and control precision provided by these 'eyes,' even the most refined anatomical knowledge could not be perfectly realized in combat.
"I see, optimizing ancient Cursed Techniques with modern science? Truly one learns something new every day." Satoru realized, then his smile widened even more.
"However, relying only on fists and feet is a bit monotonous. How about trying this?"
He formed a simple hand seal with both hands. In an instant, sixteen sapphire-blue energy spheres radiating powerful gravitational pull—Cursed Technique Lapse: Blue—appeared around Satoru like planets orbiting a star, screaming toward Sukuna from all directions.
Each Blue carried a gravity field that distorted space, sixteen layered together were enough to tear and crush everything within range into dust.
Faced with this terrifying attack capable of annihilating an army, Sukuna remained unhurried.
The layer of Domain Amplification around his body activated again, acting like an adaptive barrier, precisely meeting every approaching Blue.
The neutralizing effect of Domain Amplification violently conflicted with the gravitational field of Blue, emitting a piercing hum.
Space twisted and shattered at the boundary between the two, only to quickly mend itself.
Although it could not completely negate all the power of Blue, Domain Amplification greatly weakened its gravitational effect, buying Sukuna space to dodge and react.
He darted and blocked within the gaps of the gravitational vortex formed by the sixteen Blues, his movements still carrying an air of effortless composure. Occasionally, he could even use the differential gravity between the Blues to accelerate in reverse and launch a surprise attack on Satoru.
Inside the training barrier, Cursed Energy roared, and space shook. The two beings standing at the apex of the Jujutsu World unfolded a fierce confrontation that surpassed ordinary comprehension.
And this seemingly 'warm-up' battle had only just begun.
The students watching from afar were already struck speechless by the breathtaking scene.
Only Fushiguro Megumi's internal shout grew clearer: Are these two monsters really planning to tear down Jujutsu High?!
The more Satoru fought, the more intense the interest in his eyes became. He could feel that Sukuna's utilization of this temporary body was evolving and adapting at an astonishing speed.
With every exchange, Sukuna seemed able to predict his force application more precisely, finding those fleeting, minuscule gaps that appeared when Infinity was neutralized by Domain Amplification.
His physical combat skills had not a single superfluous movement—concise, efficient, deadly, squeezing every iota of potential from Utaha's flesh to its theoretical limit, and perhaps... even carrying a hint of momentum that suppressed his own physical combat?
"As expected..."
After another clash, Satoru used the recoil to leap back, temporarily creating a distance of several meters. His Six Eyes flickered with analytical light.
"It's not just knowledge and experience. Your control precision over this body is abnormally high. It's almost as if... you can see the tremor of every muscle fiber, and calculate the optimal node for every Cursed Energy reinforcement."
Sukuna stopped pursuing, his four scarlet vertical pupils staring coldly at Satoru, yet a cruel arc spread across his lips.
"Hey, kid with the Six Eyes, your eyes aren't bad either. But guessing right won't earn you a reward. Is the warm-up over?"
He could feel that under such high-intensity physical confrontation and the sustained drain of Domain Amplification, this body and the temporarily mobilized Cursed Energy were approaching a critical point. It was time to use something more interesting to truly measure the gap between them now.