Both time-traveled characters ended up as villainous henchmen.

The waiting time was not long; only an hour passed before the "desire" aura swirling with flames and lightning in front of He Nian began to gradually dissipate.

In contrast, a long sword with an ancient design slowly emerged from the cloud of desire.

The longsword is about 1.6 meters long and 10 centimeters wide. It is a broadsword in terms of shape, but it is much larger. Its overall weight exceeds 100 kilograms due to the compression and modification of the "Desire" fruit.

It would be virtually impossible for an ordinary person to use it freely. Only a superhuman like He Nian, who is over two meters tall and possesses terrifying strength, could wield it at will.

He Nian even felt that the weight was a bit insufficient, but he didn't dwell on it too much.

He believed that once his title as the "Demon Slayer Fruit User" was fully established in the One Piece world, changing the size and weight of his sword would be nothing more than a normal thing.

Let's just bear with it for now.

Moreover, as he continues to refine and evolve the sword, its weight will continue to increase.

With a slight smile, He Nian reached out his right hand and grasped the heavy broadsword floating in front of him with one hand.

In an instant, a feeling of spiritual connection flowed from the sword in his hand to He Nian's heart.

He gently stroked the sword with his left hand, forming a sword finger, while simultaneously infusing it with the remaining innate domineering energy within his body.

As the innate domineering energy was slowly injected, the entire sword emitted a faint golden light, and its weight increased slightly.

The sword, which emitted a faint golden light, did not have many complicated patterns. There were only a few runes that resembled flames and lightning, forming a special pattern that looked like a dragon.

There are no special decorations on the guard or pommel; the design is very simple and ordinary.

The broadsword itself didn't look particularly special, but it exuded a terrifying aura that could subdue all things.

He Nian flicked his finger across the sword, and instantly, a loud, dragon-like sword cry resounded throughout the entire palace.

At the same time, this roar of dragons and the sound of swords also contained an arrogant sense of arrogance, as if nothing in the world could withstand its attack.

"Alright, I'll call you Heavenly Devouring Sword!"

He Nian laughed heartily, raised the Heavenly Devouring Sword, and began practicing it in Wapol's palace. After a few simple attempts, he became increasingly satisfied with the Heavenly Devouring Sword.

In addition to its astonishing weight and material strength, the Heavenly Devouring Sword also possesses excellent conductivity of domineering energy.

After all, it had been constantly baptized and immersed by He Nian's innate domineering aura, Conqueror's Haki, and Observation Haki during the forging process, so it is not surprising that it has excellent adaptability to domineering aura.

As for the flame and lightning runes left on the sword according to He Nian's wishes.

Like the talismans he had drawn before, it only had an appearance and no extraordinary inner qualities.

To infuse these empty runes with extraordinary power, he needs to continuously reinforce his image as the "Demon Slayer" in the pirate world.

Thunder and fire talismans are powerful, and when used in conjunction with the Demon-Slaying Sword, they will certainly have a more convincing effect than simply using talismans.

Moreover, swordsmanship accounts for a large proportion of the extraordinary powers in the One Piece world. Although this "sword" belongs to the Sakura side, He Nian thinks it is more like a knife.

However, since it is all named "sword," he should be able to receive some support from the world's power when he cultivates the swordsmanship he believes in.

Previously, due to the lack of a suitable sword, he had not paid much attention to swordsmanship training, and his swordsmanship level had not shown any significant improvement compared to when he fought Dylan on Irit Island.

Now that he has the Heavenly Devouring Sword in his hands, and his body tempering techniques and mental secret arts are complete, and he is still exploring only Armament Haki among the three types of Haki, his main training direction for the next step is very clear.

Swordsmanship and Armament Haki.

Judging from the unique characteristics of his Conqueror's Haki and Observation Haki, his Armament Haki might also be slightly different.

Thinking of this, He Nian couldn't help but feel a little expectant.

After casually finding a few pieces of reasonably durable fabric in Wapol's bedroom, He Nian tied the Heavenly Devouring Sword together and carried it on his back.

"Armament Haki, I remember it seems to be a kind of energy enhancement mode that covers the body and weapons. I should be able to imitate it easily with innate Haki. But if it were that simple, I should have already deduced Armament Haki long ago?"

Where is the problem? Is there anything about Armament Haki that I haven't noticed...?

He Nian pondered silently in his heart, and then pushed open the door to the Wapol Palace that he had sealed off.

After nearly seven hours of sword forging, the guards in the palace who had been stunned by He Nian's Conqueror's Haki were about to wake up.

He Nian himself was also extremely exhausted at this moment, so he did not linger in the palace for long. He simply used his innate domineering aura to make a special domineering mark on the unconscious Wapol before leaving the palace with the Heaven Devouring Sword on his back.

An hour later, He Nian returned to his residence. After briefly explaining to Chopper and Kureha, he went into his bedroom, lay down on the bed, and fell fast asleep.

Over the next period of time, He Nian basically achieved his goal of coming to Magnum Island, and thus began to consider leaving.

After spending a few days cleaning up the aftermath of Drum Island, He Nian embarked on his journey.

Before leaving, he tried to invite them one more time, but neither Chopper nor Kureha agreed. He didn't try to persuade them any further, said a simple goodbye, and set off on his journey alone once again.

As for Wapol, there has been no news of him since that day, and he is most likely still in a coma. As a result, during this period, the Drum Kingdom has been embroiled in a power struggle and internal strife.

He Nian didn't really want to get involved in these matters, so he used divination to inform Kureha, Chopper, and Dalton, the former captain of the Drum Kingdom's guard who had already lost all hope in Wapol, that Wapol was unconscious and unable to use his Devil Fruit powers for a short time.

After witnessing Hiluluk's death, Dalton developed a grudge against Wapol and stopped obeying his orders.

Therefore, He Nian did not encounter Wapol when facing him.

In the original story, Dalton later became the new king of Drum Island. Given the inertia of the world's will, it wouldn't be a problem for him to become king ahead of time now.

In this way, He Nian wouldn't have to worry too much about the future of the Drum Kingdom.

It was another snowy day. He Nian boarded his old small boat, passed through the wind and snow, and returned to the boundless sea once again.

…………

Naruto World.

After returning from the Black Mist Space, Izumi Nen's strength has once again seen a welcome increase.

However, since the time spent entering the black mist space this time was not long after the last time, the improvement was not significant; it was more of a replenishment of existing power.

For example, He Nian's special Yin Release in Demon Slayer and He Nian's powerful vitality in One Piece are both supplements and improvements on the original power of Izumi Nian.

As for the amount of Qi that He Nian improved, it was still less than what Quan Nian absorbed from nature.

The only thing that surprised Izumi Nen was the sharing of power between the two new worlds of Shinigami He Nen and Agu Nen.