Buggy's Pirate Crew is currently entrenched on an island called Orange Town.
After leaving Shells Town, Luffy and the others set off towards Orange Town.
Buggy has a Grand Line nautical chart, which Luffy absolutely must obtain.
With the sea chart, he can know the distribution and orientation of various islands, allowing him to go wherever he wants.
Besides that, Luffy actually has another objective.
That is to use his heaven-defying comprehension to learn the method for making the special Buggy Bomb from Buggy.
The special Buggy Bomb has immense power, and when fired, it doesn't explode at the end like ordinary cannonballs, but rather acts like a shockwave, destroying everything in its path.
Luffy still remembers that in the original story, a single special Buggy Bomb destroyed houses on several streets, and the explosion even spread from inside the island all the way to near the coast.
And two years later, Buggy improved it, turning it into a "Machi" cannonball that was just the size of a pea but lost none of its power.
Furthermore, Buggy used a single Machi cannonball to severely wound a Devil Fruit-awakened Jail Beast in Deep Sea Great Prison.
If Luffy could learn this technique, he could definitely produce Machi cannonballs in advance.
He might even be able to optimize it through his heaven-defying comprehension, making its power even greater and its uses more widespread.
At that time, if he armed the pirate ship and crew with his improved Buggy Bombs, their overall combat power would certainly greatly increase.
…
It would take some time to reach Orange Town.
During this period, Luffy planned to begin Zoro's training.
On the deck of Arlitta's pirate ship, Zoro was shirtless, training alone on the side.
After witnessing Luffy's strength, Zoro was exceptionally diligent.
"I must quickly match Luffy's combat power!"
"Otherwise, I'd be too derelict as the swordsman on the Pirate King's ship."
Zoro gritted his teeth, covered in sweat, thinking this to himself.
"Stop for a moment, Zoro!"
Luffy walked over at this moment, interrupting Zoro's training.
"What is it, Luffy? Is something wrong?"
Zoro looked confused, but he still obeyed Luffy and temporarily stopped.
Luffy smiled and said.
"I'm going to teach you a completely new training method, and also two new abilities."
"According to the training method I teach you, your training efficiency will increase by more than 10 times."
"Ten times?!"
Zoro's pupils widened in shock, looking at Luffy in disbelief, exclaiming.
Seeing that Luffy didn't seem to be joking, his eyes then lit up, excited and expectant.
At this moment, Luffy said seriously.
"Concentrate and feel your mind. Next, I will transmit the techniques and essentials of the Ultimate Body Forging Technique into your mind."
The Ultimate Body Forging Technique is a set of cultivation methods that Luffy has accumulated over the years, summarized through his own experience and heaven-defying comprehension.
This cultivation method can comprehensively develop the body's potential through three dimensions: breathing, meditation, and daily training.
Special breathing techniques can be used to maximize stamina conservation or to maximize the activation of the body's energy.
Simply put, it can allow the user to increase endurance or increase burst power.
The training method is a set of methods researched by Luffy himself to maximize training efficiency, capable of comprehensively improving physical fitness.
And meditation is the bridge used to combine breathing and training.
Every improvement brought by breathing and training can be integrated and thoroughly understood through meditation.
This is the principle of the Ultimate Body Forging Technique.
If one masters this cultivation method, it can increase a normal person's training efficiency by more than 3 times.
And with the blessing of Luffy's heaven-defying comprehension, it can maximize efficiency, with at least 10 times or more efficiency, depending on each person's aptitude.
Currently, besides Luffy, only Uta has mastered this method.
No wonder, this was only summarized by Luffy when he was 15 years old, and Ace had already set sail a year earlier, so he didn't get to enjoy it.
…
Although he didn't know what Luffy meant, Zoro still followed diligently, closing his eyes and carefully sensing his mind world.
Just then, he suddenly felt a fresh surge of blood, from who knows where, begin to pour into his mind in large quantities.
At the same time, his mind instantly accessed an incredibly vast amount of information.
What Zoro found amazing was that he now felt like a manager overseeing his entire mind; all the fresh, unknown information was easily categorized and organized by him, becoming exceptionally clear and easy to understand.
And when Zoro understood the content of that fresh information, he was immediately completely shocked and captivated, deeply immersed and lost in it.
Several hours later.
Zoro opened his eyes, which were full of light, as if he had seen a whole new world.
"This… Luffy…"
He looked at Luffy in disbelief, his eyes filled with shock and excitement, with a thousand words in his heart, which finally turned into gratitude as he said to Luffy.
"Thank you!"
Luffy smiled and said.
"You are my crewmate; it's my duty to teach you these things."
"Besides, only when you become stronger can you better assist me, right?"
Zoro's expression became firm, and his aura was full of vigor upon hearing this.
"Oh!!!"
Luffy then added,
"Alright, next, I'll teach you the other two abilities: Haki!"
Observation Haki and Armament Haki were not difficult to master with the help of his Heaven-Defying Comprehension.
Luffy only took a little over half an hour to teach Zoro.
However, Zoro's current mastery was only Luffy helping him open a door, allowing him to get a glimpse of the basics.
His current level meant he only had an awareness and could roughly sense that power.
He couldn't apply it skillfully yet, and the effect wasn't significant.
To improve, the most crucial thing was extensive training and actual combat.
After opening up a new world for Zoro, Luffy let Zoro practice on his own.
He, on the other hand, was on the side, enabling Comprehension Conduction to boost Zoro's training efficiency.
As for Nami, Luffy planned to nurture her once she genuinely joined them.