He had originally thought Roy was just joking; he never expected there to actually be power from another world.
"Power from another world, seems pretty interesting." Garp rubbed his hands together, a look of anticipation on his face, like a child about to receive a new toy.
Roy nodded slightly.
He stood up and slowly walked to the center of the courtyard, the aura around him beginning to change.
The previously calm air now rippled slightly in response to his movements.
"This is a peculiar ability from another world, different from both the Haki and Devil Fruit powers we're familiar with." As Roy spoke, a mysterious force began to gather in his palm.
"This is a breathing technique from another world—the world of Demon Slayer."
Garp's eyes immediately lit up upon hearing this. "A breathing technique? Tell me more!"
Roy gave a slight nod, thinking to himself, *I wonder if Garp can master this?*
The question swirled in his mind. He had full confidence in Garp's strength, but the breathing technique was ultimately a completely different system of power, and its difficulty was hard to gauge.
After all, he himself had only mastered it so easily with the help of the system.
Roy had learned this unique skill a long time ago.
He had tried to integrate the breathing technique into his own combat system, but through practice and exploration, he found it didn't suit him.
In comparison, the power of chakra resonated with him more, allowing him to unleash his strength more freely.
But for Garp, he was filled with anticipation, wondering how this powerful Marine Vice Admiral would perform after being introduced to the breathing technique.
"Although the power level of the Demon Slayer world isn't high, its potential might be considerable."
As he spoke, Roy began to meticulously introduce Garp to the power system of the Demon Slayer world.
He detailed the origins of breathing techniques, their principles, and the various different styles.
Garp listened intently; only at times like this did he show such focus.
His eyes were fixed on Roy, afraid of missing any crucial information.
He nodded from time to time, a contemplative expression on his face, as if trying hard to understand this brand-new power system.
When Roy got to the specific applications and training methods of the breathing techniques, a glint flashed in Garp's eyes, and he couldn't help but interject, "Sounds a bit similar to our Haki, but also quite different."
Roy responded with a smile, "Indeed, there are some similarities in the principles between breathing techniques and Haki. Both involve controlling and utilizing one's own power to enhance strength."
"But breathing techniques focus more on controlling and regulating one's breath, using different breathing patterns to unlock the body's potential and execute various powerful moves."
Garp's interest grew increasingly strong.
Roy stood up, his aura suddenly shifting. He seemed to instantly merge with the surrounding environment, yet he also radiated a unique presence.
He took a deep breath, his chest slowly expanding, drawing all the surrounding air into his body.
"Vice Admiral Garp, watch closely. This is the foundation of the breathing technique—control over one's breath."
Then, he began to exhale slowly, his breath streaming out continuously from his mouth.
With each inhalation and exhalation, his body underwent subtle changes.
His originally straight posture now felt even more powerful; his muscles were slightly tensed yet still flexible.
"The key to the breathing technique is to use a specific breathing rhythm to mobilize the body's strength and unlock its potential."
As he spoke, Roy inhaled again.
This time, his movement was quicker. The moment he inhaled, the surrounding air seemed to be pulled by an invisible force, letting out a soft whoosh.
Then, with a light step, he dashed forward like a black phantom.
"This is one of the basic forms of Water Breathing. By regulating your breath, you can release your body's power more concentratedly and smoothly."
Roy explained, simultaneously flipping in the air and landing steadily back in his original spot.
"Next is Fire Breathing."
As soon as he finished speaking, it was as if invisible flames ignited around his body, waves of heat rolling outward.
He took a firm step forward, his right fist surging with scorching heat. The air itself distorted in the wake of his punch.
The power of this punch was immense, as if it could obliterate everything in its path.
"Different breathing techniques have different characteristics and levels of power. Water Breathing emphasizes flexibility and continuity, while Fire Breathing focuses on explosive power and aggression."
As he demonstrated, Roy explained the key points and differences between the various breathing styles.
Garp watched Roy's every move closely, his eyes filled with astonishment.
He had never seen such a unique way of utilizing power; the marvelous effects displayed by the breathing technique were an eye-opener.
Roy continued his demonstration, showcasing the basic forms of Wind Breathing, Thunder Breathing, and Stone Breathing in turn.
After the demonstration, Roy returned to sit on the stone bench. "Vice Admiral Garp, that's a general overview of the breathing techniques. You can give it a try and experience the mystery for yourself."
Roy said with a smile, his eyes full of expectation.
Garp nodded excitedly, cracking his knuckles eagerly.
"Alright! I'll give it a shot right now and see just how powerful this breathing technique really is!"
Garp enthusiastically began trying to regulate his breathing according to the method Roy had taught.
He took a deep breath, attempting to draw the air in evenly and deeply.
However, Garp had spent years sailing the seas, accustomed to relying on his powerful Haki and brute physical strength to fight on the battlefield.
Now, having to focus on controlling his breath was an entirely new territory, leaving him somewhat unpracticed in this area.
For a long time, using Haki had become an instinct for his body. The style of fighting that relied on overwhelming opponents with sheer force and aura meant he rarely needed to pay attention to the subtle changes in his breath.
When he first tried to inhale using the method Roy had taught him, his broad chest began heaving violently, like a machine running at full throttle yet out of control.
The air rushed into his lungs too quickly, like a runaway horse, instantly causing a sharp sting.
Garp frowned slightly, his thick brows knitting together deeply.
He knew that to master this breathing technique from another world, he had to overcome the immediate difficulty.
After a brief adjustment, he tried again.
This time, he deliberately slowed down his inhalation, attempting to let the air enter his body more smoothly.
Yet the power of habit was strong. Although he was trying his best to control it, his breathing remained unsteady, coming in fits and starts.
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