On the desolate mountain, the strong wind whipped up dust, and dark clouds rolled across the sky, signaling the imminent start of a battle.
Kai stood with his feet slightly apart, holding his Fangtian Huaji, his aura as majestic as a towering mountain.
Opposite him, Zoro held two swords in his hands, clenching Wado Ichimonji between his teeth, the Busoshoku Haki on all three blades emitting a chilling glow.
The blades trembled slightly, like a leopard poised to strike.
Sanji stood on the other side, a wisp of smoke curling from the corner of his mouth, his eyes filled with calm and sharpness.
The stones beneath his feet cracked slightly from his subtle exertion, his legs enveloped in pitch-black Busoshoku Haki, faintly radiating a scorching heat.
Luffy clenched his fists, a grin of excitement on his face, black Haki patterns appearing on his knuckles, his body trembling slightly with fighting spirit.
The four stood in a square formation, the air thick with an explosive fighting aura.
"Kai, this time I'm definitely going to send you flying!" Luffy was the first to speak, his smile bright but imbued with strong fighting spirit.
"Let's see," Kai's voice was low and steady as he tightened his grip on the Fangtian Huaji.
"Stop with the chatter, my swords have been waiting too long!" Zoro bit down on Wado Ichimonji, stomped his foot, and shot towards Kai like an arrow, "Oni Giri!"
Zoro's figure became a blur of wind, his two swords slashing forward fiercely.
At the same time, Wado Ichimonji, held in his mouth, also struck out horizontally with a sharp momentum, forming three intersecting attacks aimed directly at Kai's chest.
"Hmph," Kai sneered, raising his Fangtian Huaji abruptly, its blade covered in thick Busoshoku Haki, and slammed it hard against Zoro's three swords.
"Boom!"
A colossal crash echoed through the desolate mountain, and Zoro's body was instantly sent flying backward like a cannonball, heavily impacting a rock wall dozens of meters away.
"Bang!"
The rock wall instantly collapsed, stones shattered, dust flew, and a massive crater appeared in the wall, with Zoro embedded within it, blood trickling from the corner of his mouth.
Nami and Usopp, watching from a distance, were dumbfounded.
"Zoro isn't dead, is he?!" Usopp's voice trembled with fear, "Kai is too ruthless!"
"He should... be okay, right?" Nami's tone also carried uncertainty, "But with that kind of impact, we would definitely be dead."
"Not enough power!" Just as Kai retracted his Fangtian Huaji, Luffy's voice reached his ears: "Gomu Gomu no Pistol!"
Luffy's arm stretched out abruptly, his fist covered in black Busoshoku Haki, striking towards Sanji with a whistling gust of wind.
"Don't underestimate me!" Sanji sneered, tapping his foot and instantly disappearing from his spot. The next second, his right leg was already raised high, "Diable Jambe!"
"Bang!"
Luffy's fist and Sanji's leg collided in mid-air, creating a shockwave amplified by Busoshoku Haki, kicking up dust from the ground and flattening vegetation.
"Hehe, Sanji, you're still a bit lacking in strength!" Luffy grinned, his fist's power suddenly intensifying again.
"Damn it!" Sanji gritted his teeth, but it was too late to retreat.
His body was overwhelmed by Luffy's strength, and he flew out like a kite with a broken string, crashing onto the ground in the distance, raising a cloud of dust.
Sanji struggled to his feet, exhaled a puff of smoke, and his smile grew wider: "That was quite something, again!"
The moment Sanji was sent flying, Kai's figure suddenly appeared in front of Luffy.
"Too slow, Luffy," Kai said coldly, raising his Fangtian Huaji high, its blade whistling through the air as it chopped down fiercely.
Luffy's Observation Haki sensed the danger, but Kai's speed was too great. He could only grit his teeth and retract his fist.
"Gomu Gomu no Bullet!" His Haki-covered fist shot out abruptly, colliding with Kai's halberd blade.
"Boom—!"
A massive sonic boom erupted, and Luffy's body was instantly sent flying by Kai's power, tracing a long arc before crashing heavily onto the ground dozens of meters away.
"Bang!"
With a loud crash, a huge crater was smashed into the ground, and smoke billowed.
Luffy was embedded in the pit, blood on his lips, panting as he looked at Kai in the distance.
Not far away, bounty hunters hiding in the residential area watched the scene through binoculars, cold sweat dripping from each of them.
"My God, these monsters... and we wanted their bounties?"
"Thank goodness we listened to Mr. 9 and Miss Wednesday, otherwise we'd be dead without a trace!"
"Quick, write it down! Absolutely do not mess with these guys!"
The bounty hunters buzzed with discussion... Zoro, embedded in the rock wall, slowly got up, spat out a mouthful of blood, his gaze cold and resolute.
"Ittoryu, Shishi Sonson!"
He quickly rose and rushed towards the battlefield, gripping his sword hilt with both hands and unleashing a fierce slash, the sword energy heading straight for Kai's chest.
A red glint flashed in Kai's eyes. His Observation Haki perceived the trajectory of the sword energy, and he subtly shifted his body, letting the sword energy graze past him.
"Too slow," Kai commented coldly.
"Damn it!" Zoro gritted his teeth, charging at Kai again, his three swords flashing with dazzling cold light in the air.
Sanji seized the opportunity, bursting from the other side with a "Collier Shoot!" aimed at Kai's neck, but Kai easily dodged it, then kicked him away.
Luffy attacked from behind, "Gomu Gomu no Whip!" His leg whipped towards Kai with a whistling sound.
Kai raised his Fangtian Huaji and slammed it hard against Luffy's foot. A shockwave surged out, and both were pushed back simultaneously.
"Warm-up's over," Kai steadied himself, saying coldly, "Now, let's get serious."
"Hmph, bring it on!" Luffy, Zoro, and Sanji all grinned simultaneously, their auras climbing once more.
The sun hung high in the sky, the dark clouds had dispersed, and the scorching sunlight bathed the desolate mountain, the surrounding vegetation swaying gently in the strong wind.
Kai stood calmly at the center of the battlefield, holding his Fangtian Huaji, like an unshakeable mountain.
His gaze swept around, Zoro, Luffy, and Sanji each occupying a corner, their eyes blazing, their fighting spirit high.
"Don't let him stand there laughing at us!" Luffy grinned, the Busoshoku Haki on his fists flickering with a black glow, "Let's go, take him down!"
"Hmph, just don't hold me back," Zoro gritted his teeth, his three swords covered in thick Haki, their sharp blades glinting with bloodlust like ferocious beasts.
Sanji, cigarette in mouth, curled his lips into a cold smile: "Opportunities for a pincer attack like this don't come often. I won't hold back."
Zoro was the first to charge, stomping his foot and transforming into a blur of wind, his three swords cutting through the air, rushing towards Kai with a fierce whistle.
"Tora Gari!"
Three slashes intersected, sword energy tearing through the ground, reaching Kai in an instant.
"Still not fast enough," Kai snorted, lightly twirling his Fangtian Huaji. The Busoshoku Haki covering its blade suddenly erupted, colliding with the three swords.
"Boom!"
The collision sounded like thunder, the powerful impact cracking the ground and sending shattered stones flying.
Zoro's body was blasted back by the immense recoil, but he quickly attacked again.