Sasuke's step forward hesitated slightly; that gesture was to avoid Zetsu's observation, a sort of secret signal between them.
Though not used often, Itachi's meaning was "I'm fine."
Sasuke wasn't entirely clear what Uchiha Itachi was planning, but since Itachi indicated this, there shouldn't be any major issues.
Uchiha Itachi's intention was to test his strength, and Sasuke didn't want to disappoint him. He even felt that injuring Itachi with his attack would be a good thing, at least it would show he could do such a thing.
It should have been something to be happy about, but Sasuke had a vague sense of foreboding, like intuition.
He felt Uchiha Itachi was up to some mischief again, but he couldn't stop the spar to ask him clearly.
He could only ask him after it was over.
Uchiha Itachi formed hand seals and then leaped up; this was the most common Ninjutsu, the most typical Ninjutsu of the Uchiha Clan.
"Fire Release, Great Fireball Jutsu."
Uchiha Itachi placed his fingers to his lips, and then a huge fireball shot towards Sasuke.
People of different strengths can produce flames of different sizes. Though quite common, it's also the Ninjutsu that most simply and directly reveals one's ability.
A stream of fire almost filled the entire room. The flames, hitting the floor and reflecting upwards, cast a firelight onto Zetsu's face.
Even pressed against the wall, Zetsu could feel the intense heat of the flames rushing towards him.
Pitcher Plant paused for a moment on the wall. Not caring how the two were fighting, it quickly darted out of the room.
If it didn't leave now, the Great Fireball might not hit Sasuke, but it would certainly char it.
Sasuke's hand had already accumulated bright blue Chakra. If they were to use Ninjutsu, the size of this room was clearly not enough for them to fight freely.
Before the Great Fireball reached Sasuke, Sasuke directly aimed the Chidori in his hand at Uchiha Itachi.
"BOOM!!" With a loud noise, the roof was directly blasted open with a large hole, and the figures of the two jumped out one after another.
Uchiha Itachi retreated a few steps, landing directly on the roof next to them.
Without a moment's hesitation, he looked at Sasuke, who was holding Chidori in mid-air and striking empty space. After forming hand seals, he took a deep breath and again shot a giant Great Fireball at him.
For someone like Uchiha Itachi, who lacks Chakra and has weaknesses in taijutsu, the Great Fireball is almost the most suitable Ninjutsu for him.
It's simple and low-level, requiring little complex manipulation, and can produce high-intensity flames based on one's own ability.
Sasuke was instantly covered by the oncoming flames. Sasuke just managed to retreat a step, and then firmly stood on the ground.
He almost immediately spat out a Great Fireball. Although the flames took a moment longer to ignite, the power of Sasuke's Great Fireball was essentially no less than Uchiha Itachi's.
Both sides unleashed a spectacular Great Fireball, and the flames collided, creating an incredibly grand scene.
Zetsu slowly emerged a head from the ground nearby. As expected, it would spread outside; the place was too cramped for these two.
"I almost got caught up in it."
Black Zetsu said, sounding somewhat shaken.
He found a distance nearby where he wouldn't be affected and continued to watch their fight. Using such a large Great Fireball Jutsu in such a confined space, Uchiha Itachi truly intended to kill his brother.
Although killing him would be a natural consequence, Zetsu still didn't want to be affected himself, the observer with the camera function.
"Even looking at the flames, Sasuke seems to be stronger. And based on their fighting style."
"If one of them doesn't die, won't it feel a bit strange?"
White Zetsu watched the two great flames blast at each other with a grin. He didn't seem to have any of Black Zetsu's caution.
But that was just his personality; he was fulfilling his duty as an observer.
Black Zetsu thoughtfully looked at the flames on Sasuke's side. Since today, Uchiha Itachi's condition had been a little strange. He dodged shuriken he shouldn't have, and took hits he shouldn't have.
However, just judging by the size of the Great Fireballs would be a bit too rash.
Perhaps they would see something even more amazing this time.
Both sides of Zetsu's face showed expressions of interest.
Uchiha Itachi had been keeping one eye closed since a while ago, clearly gathering power for Amaterasu. But he wasn't sure when that guy would start using it.
The flames pressed down on Uchiha Itachi with some effort. The faces of both were slightly flushed by the heat of the flames.
He can already perform a Great Fireball Jutsu comparable to mine?
Uchiha Itachi slightly lowered his gaze. There was no particular emotion, but Sasuke's growth to this point was clearly for the best.
But no matter what, using the Three Tomoe Sharingan to deal with the Mangekyo Sharingan was a bit of an unfair fight.
Sasuke's confidence stemmed from the fact that he did not have Mangekyo Sharingan; he couldn't sense this fundamental difference.
Uchiha Itachi opened his other eye, the approaching flames appearing blurry.
A sharp stabbing pain surged through his eye, and the intense pain almost instantly overwhelmed Uchiha Itachi's senses.
These eyes could no longer shed tears. A moist and warm sensation trickled down Uchiha Itachi's cheek. Even though blood was flowing, the pain, which felt like it was piercing his skull, was uncontrollable.
Not only was there excruciating pain from his eyes, but his ears also seemed to be buzzing.
Uchiha Itachi focused intently forward. Hissing black flames mixed with the red flames, almost like a prairie fire, directly dyeing and assimilating the red flames.
"Amaterasu."
Uchiha Itachi's voice was somewhat low. He stared directly at the flames in front of him.
The vast red flames all turned into spinning black flames.
After the black flames devoured the red flames, they rushed directly towards Sasuke at the end, burning him.
Sasuke abruptly stopped his Great Fireball Jutsu. He had seen these black flames before; once they caught on, they would burn everything to ashes before stopping.
Sasuke began to circle Uchiha Itachi's position. He had to keep these flames from matching his speed.
But the visual range of the eyes has a gap with human running speed.
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