Due to the presence of many evil women, Luffy's age increases by one year, making him 18 when he sets sail!]
Sea Calendar 1520, East Blue, Goa Kingdom, Windmill Village.
The darkness before dawn is the deepest, yet a figure stands on the cliff edge behind the mountain.
Luffy stands there with his eyes closed!
Or rather, it is Luffy, the otherworldly soul king who has occupied this body for eleven years, standing with his eyes closed!
The sea breeze lifts the drawstring of his straw hat, slapping against his sharply defined jawline.
His eighteen-year-old body, tempered over ten years, has shed all its immaturity. Standing at 1.74 meters tall, his muscles are as smooth and explosive as rubber bands.
Luffy waits.
Waiting for the first ray of sunlight, waiting for that "opportunity" that has been eleven years overdue.
Time flows by with the sound of the waves.
Finally, a golden line tears open at the horizon, piercing the darkness and landing precisely on Luffy's face.
[Condition met: The host's biological age is 18 years old or older.]
A cold, mechanical voice boomed deep within his mind.
[Core rules activated... Loading...]
[Bound Host: Monkey D. Luffy (True Soul King Luffy)]
Luffy suddenly opened his eyes, a turbulent undercurrent surging within his dark pupils.
It's here.
[Rule 1: Possession Definition, the host must establish a partnership with the female supporting character from One Piece.]
[Rule 2: Harvesting Trigger, when the target's affection for the host reaches a precise 50/100 and remains at this level for 24 hours, harvesting can be activated after consummating sexual relations.]
[Affection Rating: 0 = Strangers/Hate, 50 = Moderate Trust/Dependence, 100 = Absolute Loyalty/Bound by Life and Death. Too high or too low a rating will prevent the Harvest from triggering.]
[Rule Three: Harvest Effect. Successful harvesting permanently and randomly grants 10%-20% of the target's overall physical attributes and talents.]
[Rule Four: Auxiliary Perception. Activates the fuzzy affection perception function, clearing away Devil Fruit side effects.]
[Example of Current Perception Range: Makino 71/100, considered as deep care and affection for a junior.]
The information flow swept over him, and Luffy slowly exhaled a breath of stale air. The breath condensed into white mist in the morning breeze, then quickly dissipated.
Eleven years, a full eleven years. This system finally awakened at this moment of his coming of age.
Fifty affection points, not perfect, just moderate.
Memories flooded back like a tide.
Eleven years ago, at the age of seven, he drowned on the beach in Windmill Village.
Upon waking, the memories of Wang Luffy and Monkey D. Luffy were frantically intertwined.
It took him an entire day to confirm that he had transmigrated into the world of *One Piece*, becoming the rubber-coated idiot who would one day become the Pirate King.
His ecstasy lasted only a moment before being replaced by a colder rationality.
Knowing the plot was his greatest advantage, but he scoffed at the original Luffy's path of brute force, relying on passion, comrades, and the protagonist's halo.
Power—only absolute power and control were real.
Emotions?
Bonds?
Those were all tools to be used.
From that day on, Windmill Village lost a silly boy who constantly shouted about becoming the Pirate King and gained a taciturn, training monster.
At eight years old, Luffy began consciously training his physical abilities, pushing the elasticity of his Gum-Gum Fruit to its limit.
Luffy bound himself to a rubber band stretched to its limit, performing weighted squats against the elasticity; he repeatedly slammed his rubber arms against rocks until his skin was torn and bleeding, then relied on his Devil Fruit ability to quickly recover, repeating the cycle endlessly.
At nine, Luffy began to try to sense Haki.
Without a teacher, he relied entirely on vague descriptions from his memory and his own trial and error.
Observation Haki?
Luffy sat in the forest all night, closing his eyes, forcing himself to listen to the wind whistling through the leaves, the insects crawling through decaying leaves, and the heartbeat of a field mouse a hundred meters away.
At first, there was only a chaotic noise, until one late night, he suddenly heard the faint creak of the bed when Makino, the Night Watchman, turned over on the second floor of the tavern. The seed of Observation Haki sprouted at that moment.
At ten, Armament Haki.
That was even more of a torture.
Luffy punched the hardest basalt rock on the back mountain, using only his pure physical strength, without relying on the elasticity of rubber.
His knuckles shattered, healed, shattered again.
Until one moment of rage, a dark color spread from his fingertips, faint yet firmly enveloping his fist.
At that moment, Luffy knew this path was viable.
From age eleven to sixteen, it was a relentless, day-to-day training regimen.
When Garp occasionally returned and saw his grandson's physique, comparable to that of the Marine Headquarters' elite training camp, and the faint hint of Haki emanating from him, his eyes nearly popped out of their sockets, followed by an even more frenzied, heart-shaped iron fist.
Luffy accepted it all, even secretly using Garp's pressure to further hone his Armament Haki.
Luffy also intentionally managed his relationships with those around him, especially Makino.
Initially, Makino's affection for him was pure, the indulgence of a mischievous child, probably around 80 points.
But Makino's affection was too high, so high that it became impossible to control.
Over several years, Luffy consciously displayed a maturity beyond his years, slowly transforming his affection from doting to pride in his outstanding junior.
71 points—still high, but he's pulled back some distance from the familial realm.
This was an experiment, a practice run for Luffy's true future goal.
At seventeen, Shanks passed through Windmill Village again.
Luffy once again "performed" that classic scene, vowing to become the Pirate King.
However, Shanks perhaps didn't notice that the flame burning in the boy's eyes wasn't a pure yearning for adventure, but something more greedy.
That vow was a declaration, but also a cover.
Now, he's eighteen.
Luffy slowly raised his right arm, a thought flashing through his mind, and a jet-black color, like flowing ink, spread from his shoulder down, instantly covering his entire arm.
His skin had a cold, metallic sheen, and his muscle fibers, slightly bulging under Armament Haki, exuded a destructive power.
Luffy casually threw a punch at a nearby rock about half his height.
He didn't use his rubber powers; it was just a straight punch coated in Armament Haki.
Bang!
The rock's surface, centered on his fist, instantly cracked like a spiderweb, then shattered into dozens of pieces, tumbling down the cliff and into the roaring waves below.
Vice Admiral threshold?
No, if we only consider the hardening of his Armament Haki and his physical strength, he has already firmly established himself at the level of a Vice Admiral, even approaching those veteran Vice Admirals renowned for their hand-to-hand combat skills.
With his Observation Haki fully activated, within the Windmill Village, the breathing of every household, the movements of birds and beasts in the forest, even the subtle sound of rats gnawing on planks in the tavern's cellar, were all clearly reflected in his mind.
This was Luffy's eleven years of effort.
Apart from Conqueror's Haki, no matter how he tried to simulate the explosive anger of Luffy from his memories, no matter how he tried to mobilize the so-called "King's aptitude," his body remained unresponsive.
That seemed to be the only trait of the original owner that he couldn't inherit from this body.
The regret of the past had now become an insignificant flaw due to the awakening of the system.
The system was his true path to the heavens.
"Possess... Favorability fifty... Harvest..." Luffy repeated the rules in a low voice, each word carrying a cold, detached meaning.
Luffy's gaze fell upon the distant sea, where the rising sun had fully emerged, painting the vast expanse of blue waves golden.
His first target was crystal clear.
East Blue, Cocoyasi Village, Nami.
That girl with short orange hair, the genius navigator who had struggled for eight years under the terrifying rule of the Arlong Pirates, yet never gave up hope.
Strong, intelligent, possessing a powerful will to survive and an unwavering determination to save her village—these qualities, in Luffy's eyes, were the perfect entry point.
Luffy had already planned everything. He would head directly to Cocoyasi Village, crushing the Arlong Pirates with overwhelming power. Those fish-men were nothing but chickens and dogs before him now.
Then, at Nami's most grateful moment, he would naturally make a request: Become my navigator.
Not an invitation, but a demand.
Using the debt of gratitude for saving the village, using her irresistible strength, he would bind her to his side, effectively possessing her.
As for his affection level... the life-saving grace, coupled with his promise to support her dreams, should easily push his gratitude and dependence to 50 points.
Acquiring 10%-20% of Nami's navigational talent and physical abilities will be the perfect first cornerstone for his journey on the Grand Line.
Her navigational talent is top-notch, and her physical abilities are still quite good even in the later stages of the original story; this will be a significant enhancement.