Thunder Breathing, originally from "Demon Slayer," consists of seven forms.
Two years ago, Vivian saved a group of civilians from a fire, which randomly granted him the first form of Thunder Breathing, Thunderclap and Flash.
Over the next two years, although he mostly chose the safest options, at the beginning of the second year, when the remaining six forms of Thunder Breathing appeared as rewards, he couldn't resist his greed and accepted the task.
As a result…
He was left with a conspicuous and gruesome wound on his thigh, which still caused him some pain whenever he ran at full speed.
"Vivian, you?!"
Five bolts of lightning shot out, forcing Doflamingo to retreat a considerable distance. Seeing this, Kuto looked at the panting Vivian, his face filled with shock once again.
That lightning strike on the deserted island that day was probably also Vivian's doing, right?
Many things suddenly became clear in his mind.
But the one thing he still couldn't understand was why this guy had been hiding his strength.
Was it out of fear?
Kuto didn't believe it. Someone this powerful, who would stand up to save them without hesitation, couldn't be a coward.
Maybe… he had some unspeakable reason?
Kuto thought.
But regardless, the strength Vivian displayed at this moment undoubtedly served as a powerful reassurance for him and the other Marines and civilians present.
On the other hand, having revealed his trump card, Vivian's feelings were incredibly complex.
In the past, his opponents were either too weak or on a completely different level, like Dragon or Garp, so he never had the chance to use the other five forms of Thunder Breathing.
But now it was different.
His opponent was one of the Seven Warlords of the Sea, Doflamingo.
A man with Conqueror's Haki who killed without hesitation.
If he continued to hide his strength, he might never get another chance.
"Step back, I'll handle this guy."
Vivian crouched slightly, muscles tensed, maintaining a combat stance, his eyes fixed on Doflamingo. He spoke to Kuto without turning his head.
Kuto nodded and quickly retreated to the edge of the dock.
He knew that with his current strength, he couldn't help in a battle of this level and would only be a burden to Vivian.
He couldn't help but recall the scene when Vivian saved him on the deserted island.
This guy, his weak appearance during the fight with Ashburn, was probably just an act, right?
Didn't expect his acting to be quite good…
"Navy, why did you come to Dressrosa and set fire to my goods? What's your purpose?"
In front, Doflamingo, who had been forced back by "Inazuma," stood with his hands in his pockets, looking down at Vivian.
He wanted to know who had sent this Navy.
Was it the World Government?
Or Sengoku and his people?
Or just a group of righteous hotheads who, after discovering the secrets here, decided to act on their own to punish evil?
But regardless of which…
He couldn't let these people leave here alive.
"Is that important to you?" Vivian said. "Donquixote Doflamingo, release my companions, or you'll regret it."
"Fufufufu." Doflamingo grinned, his smile tinged with anger. "Regret? You seem very confident in your strength."
"Not really," Vivian replied with a smile. "I'm just confident in the propulsion system of the Navy."
Doflamingo: ???
"Propulsion system?"
He didn't quite understand what Vivian meant, but it didn't stop his killing intent from reaching its peak.
Stretching his hand backward, dozens of transparent threads immediately gathered near his palm. Doflamingo swung forward fiercely, and in an instant, the threads cut through the ground's rocks, sweeping towards Vivian.
"Overheat!"
"Fourth Form: Distant Thunder!"
Vivian shouted as well.
Lightning slashed from Vivian's blade, colliding with the threads and instantly devouring them. The remaining force, like a lively animal, jumped towards Doflamingo's body.
"Is he also a Devil Fruit user?"
A Logia-type fruit related to lightning?
This thought crossed Doflamingo's mind, but his body didn't stay still.
Doflamingo suddenly disappeared from his spot, reappearing beside Vivian in less than a second, dodging the lightning strike.
He raised his hand and clawed at Vivian's waist, five forked threads piercing Vivian's body at a speed far exceeding that of a bullet.
"Ugh!"
Vivian spat out a mouthful of blood.
Glancing at the five bloody holes near his left rib, Vivian tensed his muscles and spun rapidly.
Thunder Breathing…
Third Form: Thunder Swarm!
Lightning quickly turned into a ripple shape, surrounding his body and cutting towards Doflamingo at high speed.
However, Doflamingo showed no intention of dodging.
Armament Haki appeared, covering his arms, and collided with the lightning slashed by Vivian.
Zzzap—!
With a loud explosion, the lightning was repelled shortly after touching Doflamingo's arm, falling straight into the sea.
A large number of fish floated to the surface, belly up from the lightning strike, while Doflamingo raised his leg and kicked Vivian's wounded waist again.
The intense impact made Vivian nearly faint from the pain, blood staining his black clothes. He staggered back a few steps before barely stabilizing himself.
"You don't even know Haki?"
"And your body can't turn into an element, so you don't seem like a Logia-type Devil Fruit user."
Doflamingo muttered softly.
But…
With such little strength, he dared to cause trouble on his territory?
The veins on his forehead bulged again.
Just as he was about to use another Foot Shave Line to sever Vivian's neck completely, a strong sense of gravity pressed down from behind.
Doflamingo hunched slightly, glancing behind him.
The next second.
Fujitora's figure descended from the sky, standing on Doflamingo's back.