Hero Skill: Icebound Domain

Even someone as confident as Lynn had to admit that Garp's training was truly difficult.

This Uninhabited Island's forest was home to countless fierce beasts, several of which were even capable of threatening Lynn's life!

Having the Marines and Lynn train in such an environment was undoubtedly extremely dangerous.

But danger came with opportunity.

Under such intense combat training, both the Marines and Lynn rapidly improved in strength. A few of the more talented Marines had even grasped the basics of Rokushiki!

However, Lynn's Haki training hit a bottleneck at this point.

No matter how hard he swung his fists, he could not gather Armament Haki like Zephyr's.

As for his ability to predict an opponent's attack path to a certain extent, that was entirely due to his extensive combat experience and had nothing to do with Observation Haki.

And Conqueror's Haki? There was not even a trace of it.

Finally, after being defeated by Garp for the seventh time, Lynn did not rush back into the forest for more combat. Instead, he found a quiet spot on the grassland, sat cross-legged, and began meditating.

Watching this, Garp nodded in satisfaction.

"Brat, you were too impatient before!"

Haki training was never something that could be accomplished overnight. Even the most exceptional geniuses needed long-term, rigorous training.

Before beginning his training, Lynn had known practically nothing about Haki. Therefore, it was almost impossible for him to master it in a short period of time.

Garp had long prepared himself to train Lynn over the long term.

"How many years will it take him? One? Two? No more than three, at most!"

Garp thought silently.

Three years later, the Great Pirate Era would surely gain another top expert capable of using Haki!

Yet Garp could never have imagined that, after three days of meditation, Lynn would give him a completely different answer—

Haki training was simply too difficult. It was better to continue developing his Devil Fruit ability!

After all, Lynn had only two goals in training Haki.

First, to enhance his overall strength. Second, to gain a means of fighting Logia Devil Fruit Users.

If his Devil Fruit ability could satisfy both of those requirements, then whether or not he knew Haki no longer mattered!

Thus, under Garp's astonished gaze, Lynn stepped into the forest once more.

This time, Lynn set his sights on the "kings" of the forest.

Only by fighting truly powerful monsters could he develop his Devil Fruit ability at the fastest pace!

Finally, on the morning of the fifteenth day, Lynn stood before that giant crocodile once again.

That giant crocodile had defeated Lynn dozens of times with its astonishing brute strength and indestructible hide. On one occasion, it had even dealt Lynn a fatal wound.

Seeing that little runt come to challenge it again, the crocodile grew furious.

Today, it would definitely eat that little runt!

An entire day of fierce battle.

This time, Lynn Barek was the victor.

Amid frost covering the ground, Lynn ended the battle with a heavy punch!

He hoisted the giant crocodile's corpse onto his shoulders and walked step by step out of the forest.

Along the way, no fierce beast dared block Lynn's path again, because they had all witnessed what had just happened—

One of the forest's kings had fallen.

Frost spread beneath Lynn's feet.

Just like now!

Under Garp's slightly shocked gaze, Lynn's Energy Value began to drain continuously and rapidly.

The air around Lynn began to turn cold.

Frost spread from beneath his feet. Centered on Lynn, it gradually formed a large circle roughly twenty meters in diameter.

Standing within it, every breath Lynn took leaked wisps of white mist through his clenched teeth.

In the distance, the Marines were baffled by this strange sight.

What exactly had Lynn Barek done?

Perhaps Garp could answer that question.

As a veteran who had fought for many years, Garp possessed his own unique insight.

Feeling the chill in the air, he could not help thinking of that brat named Kuzan. He was an Ice Human who had eaten the Ice-Ice Fruit and possessed the terrifying ability to freeze everything.

But the cold surrounding Lynn was fundamentally different from Kuzan's.

"This level of cold can't hurt anyone," Garp said.

Zephyr had long told him the type of Devil Fruit Lynn had eaten:

Zoan, Mythical Zoan, Human-Human Fruit, Hero Form.

That Devil Fruit was an exceptionally rare type. Perhaps only the Celestial Dragons could afford to use Devil Fruits as entertainment and feed one to Lynn when he had still been a slave.

Lynn's ability was also vastly different from a Logia. Instead, it was remarkably similar to that of Garp's old friend, Buddha Sengoku.

The same Human-Human Fruit series, the same Mythical Zoan, the same Zoan!

Even for the rarest Mythical Zoan, the defining traits of a Zoan Devil Fruit User would not change.

Zoan Devil Fruit Users could not use Elementalization, nor did they possess bizarre and varied abilities.

The only thing they could do was transform themselves!

Garp grinned. "The cold is just a bonus. The true key to this move should be your own body, right, brat?"

White vapor drifted from Lynn's mouth, but he did not answer.

"You're really an unexpected brat!"

Garp sighed. "To think you've developed your Devil Fruit to this extent. What's this move called?"

"Icebound Domain."

Lynn slowly uttered only those four words.

It was not that he did not want to answer Garp. Rather, in this state, any unnecessary movement would intensify the consumption of Energy Value within his body!

And the move's true full name should have been—

Hero Form: Troll King Trundle.

Hero Skill: Icebound Domain!

Lynn continuously consumed the Energy Value within his body, using the low temperature created by that energy consumption to create an Icebound Domain within a certain range.

On that basis, whenever Lynn fought within the Icebound Domain, his movement speed, attack speed, and self-healing ability would be greatly enhanced!

Lynn had created this move today during his battle against the giant crocodile, and had yet to test it in combat against a person.

But now, the best opponent was right in front of him!

Suddenly, Lynn pushed off with his rear foot and charged at Garp in the manner Garp knew best!

Seeing Lynn use the same move again, Garp's expression showed slight disappointment.

"Brat, is this just for show?"

But immediately afterward, Garp's expression changed.

Something was wrong!

The brat had become so fast!

And that was indeed the case. Even the distant Marines could clearly sense that Lynn's charge this time differed from all his previous ones.

Both his speed and strength seemed to have multiplied several times over, to the point where they became difficult to track with the naked eye!

Yet under Observation Haki, Garp could still easily see through Lynn's movements.

"Found you, brat!"

Garp threw a punch, ready to send Lynn flying once more.

But this time, Garp had miscalculated.

With his powerful combat instincts, Lynn predicted the direction of Garp's punch. He twisted aside at incredible speed to evade the attack, then immediately threw a punch of his own!

The punch was unimaginably fast. Garp had been careless for a moment and could not dodge in time, so he could only bring his arms together and prepare to take the blow head-on.

Bang!

With that punch, Garp's entire body actually slid roughly three steps across the ground!

This was the farthest Garp had been forced back since the training began!

"It works very well!"

Excitement gleamed in Lynn's eyes.

Icebound Domain was a sustained skill that consumed roughly 10 Energy Value per second.

After this period of training, the maximum Energy Value Lynn could store within his body had reached 1,800 points.

In other words, while maintaining Icebound Domain—

The amount of time Lynn could fight at full strength—

180 seconds.

Three minutes!