I am the Bandit King of the East Sea.

The tricky part is that, as a mad scientist, Caesar possesses a variety of biological and chemical weapons, including "Death Kingdom," which can unleash destructive power far exceeding Caesar's own strength.

If Caesar were to use these biological weapons, they would create a toxic gas disaster that would affect the entire island, turning it into a no-man's-land, causing drastic climate change, and leading to the extinction of species.

If used on Zou Island, even Inuarashi and Nekomamushi, who could go toe-to-toe with Jack the Drought, would be no match for it; it is a dangerous weapon capable of destroying a country.

Although Sieg was confident of escaping, he worried that the other bandits might be affected by the weapon, so he put on a show in front of the camera in order to find Caesar directly.

"Boss Sig, Caesar's exact location has been found," Gilman said.

"By tracking the psychic waves emitted by the video Den Den Mushi, I found the location of the enemy's monitoring room. If I'm not mistaken, that location should be the core area of ​​the research institute."

As he explained, he simultaneously communicated with Luo and the others who had secretly infiltrated the research institute via telepathy, guiding them toward the monitoring room.

“Then this dragon…” Sig looked at the huge fire dragon that had already fainted.

"Sig, let's keep him alive, don't kill him," the blue and white cat in Tengetsu's arms spoke.

"This dragon should also be an artificial creature created by Dr. Vegapunk, so let's keep it."

Blue and white cat, himself a Vegapunk artificial experimental subject, urged them on at this moment.

“Okay.” Sig had originally wanted to try the taste of dragon meat, but since developing anorexia, he rarely had an appetite for anything.

Over the past year, his anorexia symptoms have lessened considerably, but perhaps only when the threat of the superstar is gone will he be able to eat big chunks of meat with peace of mind.

"Keeping it is fine. It looks quite imposing. If Caesar assists me, I can study the dragon's bloodline factors carefully, which might be of some help to me."

Although this dragon is an artificial creature created based on genetic technology, it is not an ordinary beast. It can actually breathe fire, and the power of the flames is quite impressive, just like the dragons in legends.

Sieg waved his hand, ordering the bandits to carry the unconscious dragon back to the ship. Then, he, along with Tengetsu, Gilman, and the others, walked step by step deeper into the research institute.

...........

At the same time, in the monitoring room deep inside the research institute.

"The Surgeon of Death, Trafalgar Law?" Caesar's expression changed slightly, and he exclaimed in surprise.

"Someone actually recognizes me? That's a bit unexpected." Luo was somewhat surprised.

He was captured by Sigurd after accidentally discovering his identity as a member of the Grand Line, and remained hidden until the Marineford War.

“Of course I recognize you. You’re the supernova who killed Joker during the Marineford War, the guy who ate the ultimate Devil Fruit.” Caesar’s face darkened.

The entire Marineford War was broadcast live from the Sabaody Archipelago, and Law, as a rookie pirate who killed Doflamingo, finally became famous because of his participation in the war and became one of the Supernovas... This happened a year ago.

Caesar hesitated for a moment.

He's currently inside the research institute, and fighting normally here could easily damage the equipment, which he doesn't want.

"A world without emptiness!"

At that moment, Caesar spread his arms wide and clenched his fists. With his movement, the air around him was instantly sucked away, creating a large vacuum zone.

This move manipulates colorless and odorless air. On the surface, it looks like Caesar is just clenching his fist slightly, making it impossible to see that he is launching a sneak attack, so it is difficult to avoid.

Luffy and his crew were once hit by this move and suffocated and fainted on the spot. If used properly, it can indeed be a move that allows the weak to defeat the strong.

Luo and Sugar's faces immediately turned purple. Even the strongest people need to breathe. Being suddenly deprived of air can cause oxygen deprivation, shock, or even suffocation.

"ROOM!"

Luo Qiang stretched out his hand, and he and Sugar and the others vanished and reappeared dozens of meters away, swapping places with the bottles and jars in the laboratory.

"So he really is a user of the Op-Op Fruit?"

Caesar's face darkened again, and a hint of hesitation flashed across his expression, but in the end he made up his mind.

His body turned into smoke and floated to a corner, where he pressed a button forcefully.

At that moment, with a hissing sound, a faint mist shot out from every corner of the research institute, spreading rapidly at a visible speed and quickly occupying the monitoring room and corridor in front of us.

Before Law and the others could react, the pirates around Caesar all changed their expressions.

"Lord Caesar?"

"Could this be...poison gas?" They had suffered from a poison gas leak several years ago, resulting in numerous deaths and injuries, and now they finally realized what it was.

But it was too late; the poison gas had already filled the laboratory, and within seconds they all collapsed to the ground.

"That's right, this is the deadly poison gas I developed!" Caesar grinned maliciously.

"Compared to Vegapunk's giant dragon, the weapons I created are the strongest."

"Lord Caesar...why?" A pirate grabbed Caesar's trouser leg, but he kicked him away.

"Whoosh... This kind of poison gas weapon won't damage the research institute's equipment. It's a highly toxic biological weapon designed to target biological organisms. The only drawback is that it might affect some people..."

Caesar, being arrogant, began his own explanation after releasing the poison gas, continuing even as the pirates fell unconscious one by one:

"But never mind, they're just consumables for human experiments anyway. As long as they don't damage my equipment, this loss is acceptable."

Suddenly, a voice rang out.

"baton."

Luo pointed, and like a conductor waving his baton, the faint mist-like poisonous gas around him surged and floated to the dome above the laboratory.

As a user of the Op-Op Fruit, when the ROOM space is deployed, he can manipulate objects within the space without touching them, similar to the Float-Float Fruit, and can even control heavy warships at will.

Although the deadly poison gas released by Caesar was terrifying, this ROOM space had become Law's domain, and even the most lethal poison gas could not penetrate it.

“A space-type ability user? This is troublesome…” Caesar frowned, about to say something, when Law suddenly disappeared.

"High-frequency surgical scalpel!"

In the next instant, Law's figure flashed behind Caesar, swapping positions with a wisp of air. He slashed forward with his nodachi, Onikaku, a long sword that was now wrapped with high-voltage electricity. With a surge of electric light, he cleaved Caesar into several pieces.

The basic ability of the Op-Op Fruit is to manipulate space, but it can also generate techniques such as electric shocks and even gamma-ray scalpels...

Taking advantage of Caesar's spasms and convulsions after being hit, Luo Changdao plunged his longsword into Caesar's back again.

A vibrant, still-beating heart was now in his hands.

"I'll accept your heart."

With a slight increase in pressure, the excruciating pain in Caesar's heart caused his body, already severed into several pieces, to convulse once more, turning his face ashen.

"I surrender! I surrender!" Caesar cried out hastily, his face contorted with grief.

The battle ended very quickly.

When Sieg and the others arrived deep inside the research institute, Caesar had already been forced by Law to shut down the gas device and disarm all his subordinates.

"So, you are Caesar..."

To avoid revealing his identity, Sieg changed his face and spoke as if he didn't recognize Caesar.

In fact, after achieving his current level of skill in Life Return, Higuma can easily change his body shape and even his appearance without using Luffy's skin. Changing his face is not difficult for him.

"Yes, you are the bandit king, Lord Sig, right?" Caesar's previous coldness vanished, replaced by a fawning smile.

Although Caesar was arrogant, he changed his attitude quite quickly after becoming a prisoner.

"Hmm?" Sig remained expressionless, simply looking at Caesar silently, unaware of where he had revealed his identity.

“Lord Sig…” Caesar explained rapidly:

"Everyone knows that the Mountain Bandit King possesses the ability to change his appearance, but that's not the most important thing..."

"The Battle of Marineford a year ago was broadcast live from Sabaody Archipelago, and many people witnessed your heroic deeds on the battlefield, Lord Sig."

"The appearances, specific Devil Fruit abilities, and fighting techniques of big shots like Trafalgar Law, the Surgeon of Death, and CP0's Stussy, who ate the Door-Door Fruit and defected... have already been exposed during the live broadcast."

Therefore, it wasn't themselves who were exposed, but rather the abilities of Law and Stussy, among others...

This explanation convinced Siegfried, and he simply reached out and lightly brushed his hand across the face. When he put his hand down again, an ordinary-looking but handsome face appeared before Caesar.

"As expected of the legendary bandit king..." Caesar felt relieved, revealing a look of shock and shame, and began to flatter him:

"To be able to easily overturn my research institute by simply sending one of his new recruits, Lord Sig truly has an abundance of talented people under his command!"

Luo stood to the side, watching Caesar expressionlessly. He had suffered from heavy metal poisoning in his childhood and had no sympathy for Caesar, who used poison gas as a weapon and treated human life with contempt.

Caesar smiled obsequiously and continued to flatter Sieg.

Before Luo and the others defeated him, he only guessed that the mysterious man was Sieg, without concrete evidence, and did not completely give up the fight.

But it's different now.

He no longer harbored the slightest rebellious sentiment.

"The mysterious bandit king has suddenly arrived on this deserted island. He must have taken a liking to my talent and potential, which surpasses Vegapunk's! So I am not in any danger. I just need to show my talent, just like I did when I faced Kaido and Big Mom. It's just a matter of changing my sponsor."

As Caesar thought this to himself, his smile grew even more obsequious.

“Lord Sig, please take a look at these documents… These are my experimental records from the research institute, and they are very valuable.” Caesar floated to the table, opened the safe, and took out a stack of documents.

Caesar's heart had already been removed, and Sieg wasn't worried about Caesar resisting. He was a little curious about Caesar's behavior, so he took the documents and glanced at them.

"Lord Sig, the three main experimental projects I am currently conducting at the research institute on the island are all here."

"The first project is research on the mass-production of the artificial Devil Fruit SMILE, commissioned by Kaido of the Beasts... It's progressing well now, and we're only one step away from mass production!"

"The second project is the development of a large-scale biological weapon called 'Death Nation,' a powerful biological weapon capable of destroying a nation..."

Caesar spoke with great confidence, not forgetting to subtly hint that his backer was Kaido, one of the Four Emperors.

Kaido's high regard for Caesar, along with the artificial Devil Fruit project, all affirm Caesar's own value.

After reading these documents, Sieg will clearly understand Caesar's important value, and thus he will be able to save his life.

"The third project is the giantification experiment," Caesar introduced with a smile.

"This is another request from one of the Four Emperors, Big Mom."

"As everyone knows, the strongest country in the world right now is not Whole Cake Island, ruled by the Four Emperors Big Mom, nor is it Wano Country, ruled by Kaido of the Beasts, but Elbaf, the giant country deep in the New World!"

"Elbaf is the strongest nation because of the superhuman strength of its giants!"

Sieg nodded slightly.

In fact, the problem with the giants is that they appeared a bit too early, which makes them seem somewhat underwhelming.

After all, later big bosses like the Golden Emperor Tesoro, Barrett, Kaido, and even Big Mom basically piloted Gundams, and were enormous in size with astonishing destructive power.

These powerful warriors, unlike ordinary giant warriors, were not easy targets due to their large size and slow movement.

"Elbaf's reputation was earned through battle; even the Four Emperors, Big Mom, have always coveted the giants' immense power," Caesar continued to explain.