"Bang!"
Their fists collided, and Sasuke Uchiha was driven several meters backward, his feet gouging two deep furrows in the ground.
In terms of raw strength, he still fell short of Naruto Uzumaki.
"The speed at which you activate Amenotejikara... has improved quite a bit."
Naruto grinned. "Again!"
They fought from dusk until nightfall, then from nightfall until the moon hung high overhead.
A large swath of the woods surrounding the Training Ground had been knocked down, and the ground was riddled with craters, traces of battle everywhere.
Sasuke's Amenotejikara grew smoother and smoother during their battles. At first, he still needed time to prepare it, but later, he could activate it almost instantly.
Of course, that preparation only took a fraction of a second.
But against exceptionally powerful enemies, even a single instant was an opening.
What Sasuke needed to do now was make Amenotejikara as fast as possible, giving his enemies no time to react at all.
Reaching that point would mean he had gained a deep mastery of Space-Time Ninjutsu.
And so, Naruto and Sasuke began fighting without rest.
The first day, the second day...
On the tenth day, Sasuke transferred Naruto's Spiral Shuriken above Naruto's own head for the first time in battle.
On the eleventh day, although Naruto blocked it with the Nine-Tails' tails, the blast still left him covered in dirt and dust.
On the twelfth day, the fifteenth day, Sasuke swapped Naruto's real body with a Shadow Clone during a close-range exchange, making Naruto's attack strike his own Shadow Clone.
On the thirteenth day, Naruto froze for a second, then burst out laughing. "Sasuke, you're so sneaky!"
On the twentieth day, Sasuke tried using Amenotejikara while maintaining a spatial rift.
He succeeded. Although the rift shattered in less than a second, it was