Boom!
An explosion erupted immediately as two shurikens infused with different types of Chakra collided, causing both shurikens to disappear.
Whoosh!
Taking advantage of the smoke from the explosion, Kakashi unleashed Chakra and demonstrated the speed from Breath of Thunder, charging forward rapidly.
Obito, knowing Kakashi's speed, didn't conserve Chakra and activated his Sharingan as he hurled the shuriken, quickly spotting Kakashi's movements.
"Fire Release: Impatiens Fire Jutsu!"
Obito gathered Chakra in his mouth, swiftly performed Nature Transformation, and spat several fireballs at Kakashi to prevent him from approaching.
To avoid getting hit by the high-temperature fireballs, Kakashi had to maneuver and slow down.
For him, Obito was certainly a troublesome opponent, as the powerful insight of the Sharingan made Kakashi wary of using the Lighting Flash.
"Earth Release: Earth Flow Wall Jutsu!" Kakashi eventually opted to use Ninjutsu for defense, creating a thick earth wall with a dog's head between him and Obito, blocking all of Obito's fireballs and temporarily losing Obito's sight of Kakashi.
"Using that trick again, you think I'm the same person as before?" Obito laughed smugly.
In battles against Obito, Kakashi often used various obstacles to hide his form, then used Shadow Clones to divert attention while the real body launched a sneak attack from the underground.
Having suffered from these tactics many times, Obito wasn't going to be fooled anymore.
"Fire Release: Fire Dragon Flame Bomb!"
Obito rapidly completed Nature Transformation, gathering a large amount of Chakra in his throat, then spat out a massive wave of orange-red flames that engulfed the surrounding ground.
Although Earth Release could penetrate the ground, it couldn't go very deep, and with the heat of his flames, Kakashi would certainly feel uncomfortable.
Enhanced by the highly focused Breath of Flame, Obito's Fire Dragon Flame Bomb's power was formidable, even shattering Kakashi's Earth Flow Wall as the fire spread, revealing Kakashi's body within.
"Hmm? A Shadow Clone?" Obito examined Kakashi behind the Earth Flow Wall, puzzled, with his Sharingan.
Shadow Clones are physical, so even with his Sharingan, Obito couldn't tell whether the Kakashi before him was the real body or a Shadow Clone.
However, seeing that Kakashi quickly dodged, and no other Kakashi emerged from the ground, Obito realized he was tricked. Kakashi hadn't moved at all but stood behind the Earth Flow Wall while Obito unnecessarily expended a Fire Dragon Flame Bomb's Chakra.
Obito was relieved he hadn't used the Breath of Flame Chakra Mode with the Fire Dragon Flame Bomb, as that would have consumed much more.
His own Chakra Amount was greater than Kakashi's, so as long as he didn't waste too much, it was not a problem.
Obito didn't waste his Fire Dragon Flame Bomb; he continuously compressed Kakashi's space to dodge, taking advantage of the flames still covering most of the field.
"One Flash!"
Just as Kakashi almost reached the edge of the field, he exploded the Chakra gathered in his legs, rapidly drawing the White Fang Short Blade, transforming into a yellow lightning bolt charging at Obito.
"Breath of Flame Chakra Mode!"
When Obito's Sharingan detected Kakashi's movement, he immediately reinforced his breathing, consuming Chakra to enter Breath of Flame Chakra Mode, further enhancing his body.
Without this, Obito worried he might see the attack but couldn't react in time.
With Breath of Flame Chakra Mode and the Sharingan's support, Obito dodged Kakashi's slash, simultaneously releasing a massive amount of flame from his palm toward Kakashi, using Fire Attribute Transformation.
Kakashi, at a speed he could manage, quickly used Soru to dodge after detecting Obito's counterattack.
"If Lightning Flash can't resolve Obito, then I'll be the one to lose," Kakashi frowned slightly, acknowledging the difficulties posed by the Sharingan.
Just as Kakashi found Obito troublesome, Obito also found Kakashi quite challenging.
Kakashi's speed was too fast, and his Fire Release couldn't cover the entire field like Kisame's Water Release.
Initially, it was fine because the field had many trees, which helped to expand his Fire Release's coverage.
After fighting for so long, let alone trees; even grass was gone, turning the field into barren land.
Obito didn't care much, leveraging Breath of Flame Chakra Mode, continuously bombarding Kakashi with Impatiens Fire Jutsu, forcing Kakashi into close combat.
Breath of Flame Chakra Mode consumed Chakra too quickly; he had to end the battle swiftly.
Using Impatiens Fire Jutsu with Breath of Flame Chakra Mode, Obito increased both speed and power, making it difficult for Kakashi to dodge, even at his speed, as Obito could clearly see his movements.
As the distance between Kakashi and Obito narrowed to just six meters, Kakashi suddenly burst with lightning.
"Lighting Slash!"
Intense yellow lightning enveloped Kakashi's right arm, extending into a lightning blade along the White Fang Short Blade as Kakashi combined the power from his Breathing Technique and Nature Transformation, swinging his sword fiercely.
Rumble rumble!
The slash made of dazzling yellow lightning charged at Obito, leaving a long charred slash mark on the ground.
Lightning Slash was a variant of Lighting Flash, a technique Kakashi devised after battling Zabuza, slightly less powerful but safer to use.
"Fiery Flame Fist!"
Obito immediately combined Flame Charge with Flame Fist, his whole body igniting with flames as he swung a Fire Fist furiously, sending a tidal wave of flames crashing against the slash.