[The qualification to advance to the fourth stage of the Rumble-Rumble Fruit has been unlocked. Please sign in at the residence of Killer B, Hachibi's Jinchuriki.]
Hearing this, Naruto immediately used Subterranean Voyage and burrowed underground, safely leaving Yugito's residence.
"I'm really a genius to think of such a perfect plan."
Naruto said smugly as he retreated.
Avoiding conflict while completing the mission was the best outcome he could have hoped for.
Next up, he planned to repeat the same method at Killer B's residence. If everything went smoothly, the task would be as good as done.
As the saying goes, 'Good things come to those in high spirits'. Naruto's good mood seemed to be bringing him luck… or, perhaps, he owed it all to Kishimoto's narrative convenience.
Killer B, being a training enthusiast, often spent days at a time perfecting his skills outside. As a result, his residence was usually unoccupied.
So when Naruto arrived at Killer B's residence, everything went incredibly smoothly.
[It is detected that the host has stayed in Killer B's residence for one hour. Prerequisite for Phase Four of the Rumble-Rumble Fruit is complete. Rumble-Rumble Fruit's ability is upgraded. Host has obtained the Lightning Physique, enabling full-body elementization and immunity to physical attacks.]
As the system completed the upgrade, Naruto felt his body tingle with a strange yet comfortable sensation, like a therapeutic electric massage. For a moment, he even wondered if his bones had turned to jelly.
When the sensation subsided, Naruto noticed faint bluish-white light glowing from his skin, with arcs of electricity flickering across it.
With a slight movement in his mind, Naruto's whole body transformed into lightning.
Before Naruto could shout in awe, his clothes were already charred black and disintegrated into fine ash within moments.
"What the hell… Am I destined to fight naked?"
Naruto exclaimed, horrified at the potential for such public humiliation.
Thankfully, he quickly remembered the Artifact Clone Costume he got from the system. Retrieving a new outfit, Naruto used the costume's ability to clone the fabric. After wearing the cloned version, he tested his lightning transformation again.
"As expected of a reward from the system. Not a single spark left a mark on it."
Naruto exclaimed.
Although the costume didn't provide significant defensive benefits, it ensured he wouldn't suffer a 'social death' during battle, and that was more than enough for him.
[The qualification to advance to the fifth stage of the Rumble-Rumble Fruit has been unlocked. Host must check in at the residence of Enel, God of Skypiea, in the One Piece World. Completing this task will unlock the full abilities of the Rumble-Rumble Fruit.]
[You can now go to One Piece's Sky Island, do you want to transfer?]
"Transfer!"
Naruto agreed without hesitation.
With his new Lightning Physique, he didn't fear Enel's attacks. Besides, he didn't need to fight Enel, as all he had to do was remain there for an hour to complete the mission.
[Transfer confirmed… Initializing… Please wait...]
Naruto's vision went dark, and his consciousness faded. When he regained consciousness, he heard the system prompt sound again.
[Transfer successful. Host is now in One Piece's Skypiea. Once the task is complete, the host will be forcibly returned to the Naruto World. The host cannot leave Skypiea before that.]
"Got it." Naruto nodded slightly.
Having been to the Pokemon World to obtain Squirtle, Naruto was already familiar with this kind of traveling to other world to complete missions.
In fact, even if the system didn't transfer him out of Skypiea directly when he's done with the mission, he still would leave.
There was another system owner in the Naruto World, leaving Naruto no extra time to linger.
Sizzle!
After transforming his entire body into lightning, Naruto felt a little relieved and looked at his surroundings.
At that moment, he was on the edge of the Sky Island, clearly seeing the clouds below.
'No wonder Enel dared to call himself a god. This place is indeed like the Heaven.'
Even Naruto, having just arrived, couldn't help but feel an overwhelming sense of superiority, as though he stood above everyone else.
However, the eerie silence around him unsettled Naruto.
Logically, Enel's Mantra, which is essentially Observation Haki enhanced by the Rumble-Rumble Fruit, should cover the entirety of Sky Island. And Naruto's sudden appearance here should have immediately drawn Enel's attention.
Yet there was no thunderous roar or dramatic display of power. The lack of response made Naruto uneasy.
'What's that guy up to?'
Naruto thought for a while but couldn't come up with an answer.
'Forget it, It doesn't matter. 'm invincible in my lightning form anyway. Let's just complete the sign-in.'
After thinking to himself, Naruto stomped forward and dashed towards Enel's temple.
Along the way, the state of the Sky Island perplexed him even more. It was in ruins, with scorch marks and signs of battle all around.
'Could it be that Enel had been fighting someone and was too preoccupied to notice him?'
Suddenly, Naruto thought of something and couldn't help asking, "System-sama, what timeline is this in One Piece?"
[Friendly reminder: This is shortly after the Straw Hat Pirates left Sky Island.]
"F*ck!"
Naruto couldn't help but exclaimed in surprise, "System-sama, I didn't think you had this much foresight!"
In One Piece, Enel's greatest nemesis was none other than Luffy, the rubber man. Because rubber doesn't conduct electricity, Enel's lightning-based attacks were completely ineffective against him.
Now that the Straw Hat Pirates had just left, it likely meant Enel had been defeated.
Naruto had initially worried that Enel might have some backup plans. But now, knowing Enel was likely injured and weakened, there was nothing to fear.
By specifically choosing this point in time, the system had clearly set things up to make Naruto's task much easier.
At this moment, Naruto and his Sign-In System were on the same boat. They were both constantly at risk of being overtaken by that hidden system owner. The system must have realized the stakes and started providing Naruto with every possible advantage within the rules.
Whoosh!
Naruto increased his speed and fearlessly charged into Enel's temple.
Without Enel posing a threat, the other inhabitants of Sky Island couldn't possibly endanger Naruto. With his lightning form, he was essentially invincible.
Mimicking Enel's methods, Naruto infused Observation Haki into his lightning mode, creating a network similar to Enel's Mantra, allowing him to extend his sensory range as far as possible.
Although Enel posed no threat to Naruto, that didn't mean Naruto would let him off easily.
After all, the Naruto World had no equivalent to Luffy's rubber body. Bringing Enel back would add significant strength to Naruto's side. In fact, Naruto even considered that Enel might prove stronger than Orochimaru.
Once Naruto completed this sign-in task, he would fully unlock the Rumble-Rumble Fruit's abilities.
With the configuration of two Gods of Thunder, plus Otsutsuki Orochimaru, it would make it much easier to deal with the unknown system owner threatening their existence.
"Hmm?"
Using his sensory network, Naruto suddenly detected something and broke into a grin, "Enel, I've found you..."