"Ding! Dungeon instance activated."
"Scanning dungeon... Confirmed: One Piece World: War on the Summit."
"Parallel dimension projection established. Scanning number of participants... Confirmed: 101."
"Dungeon difficulty: Intermediate."
"Considering it's the host's first entry, difficulty will be slightly reduced."
"Number of revivals allowed: 3."
"Time limit: 5 hours."
"Dungeon rewards: Basic physical attributes enhancement, energy boost, small chance of acquiring loot. Host receives additional inheritance progression rewards."
"Opening in... 5, 4, 3, 2, 1!"
"Teleportation commencing!"
As the members of the Senju Clan standing in the plaza experienced a wave of dizziness, the scenery before their eyes changed dramatically.
War at the Summit.
The iconic, devastating battle in the world of One Piece — a massive clash.
The three Admirals, the Fleet Admiral, and the Seven Warlords were engaged in an all-out war against Whitebeard and his forty-three allied pirate crews.
In the end, Whitebeard's side suffered a tragic defeat.
Of course, Senju Yukika wasn't interested in the world's political intricacies or storyline.
He had brought the Senju Clan to experience battle.
The two sides were already locked in a tense standoff when — suddenly, hundreds of ninjas appeared, drawing startled gazes from both pirates and marines.
"Uh, Lord Yukika... who are we supposed to help?"
Still stunned, Hatake Sakumo gulped nervously.
He had never seen a battlefield of this scale — not even during the Second Great Ninja War.
"No one," Senju Yukika answered calmly.
This was war.
He was merely an emotionless killing machine.
The more he killed, the greater the rewards.
As for the characters inside the dungeon? He didn't care.
Even though the system preserved memories and traces of existence, that had nothing to do with Yukika.
"War!"
Spreading his dark wings, Yukika took to the skies.
Under the stunned gazes of pirates and marines alike, the slaughter began.
The Senju ninjas showed no hesitation and charged alongside Yukika into the chaos.
At the frontline, Sengoku glanced at Garp, then at Ace on the execution platform.
"Are those Whitebeard's reinforcements?"
"I have no idea," Garp replied indifferently.
These newcomers neither looked like pirates nor resembled any known faction —
Their outfits bore unfamiliar symbols.
Sengoku wasn't just confused.
Even Whitebeard frowned in contemplation.
In truth, he hadn't called for any reinforcements.
But who were these people?
Forget it!
Since they were charging toward the Marines, they were friends — at least for now.
"Support the unknown allies!"
He gave the order to attack.
The battlefield descended into chaos.
Yet, barely after they began clashing with the Marines, just as an Admiral was about to strike, Yukika abruptly turned his head toward the pirate allies behind him.
"Almost there. Now... kill the pirates."
With a twist of his spear, Senju Yukika activated the Nine-Tails Chakra Mode and charged into the pirate ranks.
Alliance?
Meaningless.
These so-called pirates were merely overgrown infants in his eyes.
"Father! The reinforcements have betrayed us!"
Marco, the Phoenix, shouted in disbelief.
Whitebeard scratched his head, just as confused.
Well, if they turned against him, then they were enemies.
Sometimes pirate friendships ended just that quickly.
The battle turned even bloodier.
Facing attacks from both Marines and Pirates, the Senju side began to suffer significant casualties.
Fortunately, dying inside the dungeon wasn't truly fatal —
Each had three revival chances.
Once they were used up, they would be forcibly returned to the Ninja World.
This was the system's rule.
As for Yukika, he had his reasons for this brutal strategy:
The intense pressure of fighting both sides would forge true strength.
Without hardship and despair, true evolution was impossible.
Like the Hollows from the world of Bleach, creatures of the void had to kill and devour each other to grow stronger.
Despair births an unbreakable will.
The real training had just begun.
Meanwhile, back at the center plaza of the Ninja World—
A gasping figure appeared on the ground, looking around in shock.