The battle officially began with Garling's death.
"A transformation fruit-like ability."
Imu's gaze didn't linger on the Celestial Dragon for even a second. The next moment, he decisively launched an attack.
Under Imu's control, the ox-spider's appendages beneath him attacked like pitch-black serpents, silently striking everyone present.
-Including even Garp and Sengoku.
Garp was understandable, as the old man had clearly defected.
But Sengoku had never imagined things would reach this point.
Originally, Saturn's spider legs were already sharp. After being coated with that shadow-like substance, their sturdiness increased further.
"Watch out!"
Naruto reacted first, grabbing the incoming black appendage, then immediately following up with a Conqueror's Haki-infused punch.
Even with Imu possessing him, Saturn's massive body was sent flying backward after taking a punch from Naruto in this state.
Yet, those black spider appendages could still extend infinitely, continuing to assault everyone.
Karin and Sasuke, having flight ability and being relatively far, dodged with several nimble movements.
Bullet and Byrnndi World chose to tank it.
But their abilities were truly limited.
After Saturn's enhancement by Imu, his power was astonishing.
Even someone as strong as Bullet found it difficult to use Conqueror's Haki to withstand it, being blasted straight into Marineford's ruins, condition unknown.
Byrnndi World, however, glared fiercely, all his hatred for the World Government now focused on Imu.
He knew blocking this attack was unrealistic given his strength, but he had his own plan.
Swoosh!
A spider appendage pierced Byrnndi World's side.
-Originally aiming for his heart, but because he instantly used his Moa Moa no Mi ability to grow dozens of times larger, the attack only reached his waist.
"Die, you bastard!"
The giant Byrnndi World ignored the pain from his waist, delivering a [Hundredfold Heavy Punch] at Imu.
Boom!!
The enlarged fist could practically cover Imu, pressing him straight into the ground.
"Is he dead?"
Some philosopher probably once said...
Usually, in shows, novels, or comics, when lines like 'Is he dead?', 'He's alone', or 'Must be an illusion' appear, the outcome is often decided.
"Ugh!"
Byrnndi World cried out in pain, quickly reverting to normal.
His punching right hand was now bloody, the bone visible.
Just one strike, and the [World Destroyer] had lost an arm.
Meanwhile, Imu's attacks showed no sign of stopping. Those black appendages continued relentlessly harassing others.
Thud!
Garp, with one punch, sent the still-reacting Sengoku flying, while using his two thick arms to tightly clamp two of Imu's appendages under his armpits.
At the same time, he didn't forget to remind his old comrade.
"Sengoku! What time is it?! Haven't you seen the situation clearly yet?!"
Seeing Sengoku being attacked indiscriminately, the conscious Marines on the battlefield looked at Imu differently.
Truthfully, within the Marines, the Fleet Admiral's prestige surpassed even the World Government's.
Especially this Sengoku, who is deeply respected.
Therefore, Kizaru and Aokiji simply ignored Kaido and Big Mom, charging straight towards them.
Elsewhere, the sent flying Sengoku felt a large hand support his back, allowing him to regain his balance.
He looked towards the hand's owner, one of the pirates he loathed most, Whitebeard.
"Gurararara... How pathetic, Sengoku."
"What? Lost your will to fight after realizing who you've been serving?"
Saying this, Whitebeard ignored Sengoku, leaping past him, his Murakumogiri once again coated with Conqueror's Haki.
"I couldn't finish you thirty-eight years ago! Let's settle the account this time!"
Hum!
The Conqueror's Haki slash split Imu's head in two almost unimpeded.
But immediately after, Murakumogiri's blade couldn't advance further.
"It's you... I spared you once before. Didn't think you'd dare come knocking."
Imu's split head merged together like black mud on the other side, while his hand tightly gripped Murakumogiri's blade.
Even with Whitebeard's strength, he couldn't pull it free.
"Move! Old man!"
Hearing this voice, Whitebeard released and dodged without hesitation, letting Imu take his naginata.
The next moment, Naruto appeared where he had stood.
"Try this-"
Instantly, Naruto's robes changed color, horns and a third eye appearing on his forehead.
This left the others stunned, unclear what was happening.
Even Imu himself seemed very curious about Naruto's current form.
He had seen Naruto transform like this to withstand the [Mother Flame] at Impel Down through his god's-eye view.
But back then, Imu thought it was just some Devil Fruit ability.
Only upon witnessing with his own eyes did he discover with surprise that the power Naruto displayed wasn't from this world.
And its depth was no less than Devil Fruits!
The Otsutsuki Clan's unique Chakra rapidly gathered in Naruto's palm, mixed with a substantial amount of Haki.
This made the originally somewhat Truth-Seeking Ball-like black sphere darker.
If the Fourth Hokage's spirit could see this, he might be pleased.
After all, his son, after many twists, ultimately returned to the path of Rasengan.
Above, Sasuke's Sharingan seemed to see something, quickly shouting to those below.
"Everyone! Get away!"
People were confused, but didn't get cocky.
This time, even Sengoku didn't remain idle.
He gave a complex look at the battling Naruto and Imu, glanced at the arrived Aokiji and Kizaru, and suddenly said,
"Kuzan, isolate this battlefield."
Hearing this, Aokiji paused, then compliantly used his Devil Fruit ability.
Although creating ice walls without a tsunami was troublesome, it only extended the time slightly.
Just as Aokiji acted, the black ball in Naruto's hand finally formed.
Despite being only watermelon-sized, it gave off an immensely heavy feeling.
Around it, countless rays of light formed a 'stellar ring', as if it were truly a black hole in the universe.
"No time for a name. Let's call it Black Hole Rasengan!"
Saying this, Naruto's hand pressed against Imu.
Though called [Rasengan], neither its principle nor final effect had any relation to the Rasengan.
It was more like a Ninjutsu, or 'divine technique', created by combining [Swirl Release] with Naruto's Kokugan ability [Onogoro].
The moment the pitch-black energy sphere contacted Imu, its immense gravity began slowly tearing apart Saturn's body beneath him.
Imu slashed with Murakumogiri, but even the blade and Haki were helpless against the terrifying black sphere.
Instead, they were pulled by gravity, continuously sucked in.
"This power!?"
Imu also sensed danger, but his tone remained firm.
"Useless! Besides Joy Boy! No one can kill me!"
Even with his experience, Imu's perspective was still limited to this One Piece World.
He might have heard of 'space pirates', but ultimately, he was just a tyrant on one planet.
His schemes, his rule, everything seemed infinitely small on a cosmic scale.
Here, the Otsutsuki Clan's superiority was evident.
These guys had long left their home galaxy, treating other life-bearing planets in the universe as nurseries for cultivating power.
Regardless of actual combat performance, just this perspective far surpassed Imu.
Imu's black form became increasingly unstable, his body burning with the black flames, like black tentacles.
A few seconds after the ice walls fully rose, terrifying gravity centered on Naruto and Imu, tearing everything around to pieces.
The ice debris cleared, revealing the empty scene.
Now, the last Five Elder, Saturn, had turned to dust. Imu had lost over ninety percent of his body, only a head and several tentacle-like black tendrils barely clinging on.
In comparison, Naruto was in much better condition, mostly intact.
However, Garp and Whitebeard their expressions changed.
"Bad!"
"Again?!"
The reason? They saw Imu's few tendrils had already 'pierced' Naruto's body.
Though causing no wounds, both knew the serious consequences.
Thirty-eight years ago, even someone as strong as Rocks, after being hit by this move, couldn't control himself, even forced to attack his own wife and child.
After so long, Imu used the same move.
"Hah... You failed, Uzumaki Naruto."
Imu's voice was fragmented, perhaps because this body was mostly destroyed.
Yet he laughed triumphantly for the first time.
Honestly, upon witnessing the power surpassing this world in Naruto's hand, even he felt tremor.
But his own power was superior.
He still seized the opportunity.
'Besides Joy Boy! No one could be immune to this move!'
"I will make you witness everything with your own eyes!"
"I command you, Naruto Uzumaki!"
"Kill everyone! All of them!"
"Domi Reversi!"