On the third day after his Black-Scale Armament breakthrough, Silvers Rayleigh shifted the focus of training to Observation Haki.
The gravity field in the lower hold had already been tuned to six times normal. After an adaptation period, this was a comfortable intensity where Douglas Bullet could maintain basic activity for a long time without grinding himself into dust.
But today's training ground was not inside the gravity zone. It was the open space on the other side of the hold.
Twelve wooden dummies stood there in a rough formation. On each dummy, thirty-six points had been marked in red paint, corresponding to vital areas and joint connections on a human body.
"Observation Haki, at its core, is perception."
Rayleigh stood in the center of the dummy array, a slender bamboo sword in hand.
"Perceiving aura, emotion, intent, and even perceiving the future."
He swung the bamboo sword casually, and the tip carved afterimages through the air.
"Most people's Observation leans toward 'reading intent' and 'vague foresight.'"
"For example, predicting where an opponent will strike next, and what kind of move they'll use."
"That kind of foresight relies on accumulated experience and changes in airflow."
The bamboo sword shot out without warning, as fast as lightning, and tapped the heart mark on one of the dummies.
"But your talent…"
Rayleigh drew the sword back and looked at Bullet.
"It makes me think of another possibility."
Bullet stood at the edge of the array and asked, "What possibility?"
"Parsing."
Rayleigh let the word fall with weight.
"If you can devour matter, energy, even combat traits…"
"Then your perception might also carry the trait of 'parsing.'"
"What you see won't just be 'what the opponent is about to do'…"
"It'll be 'why the opponent can do it in the first place.'"
He paused, then added more sharply, as if driving a nail into place.
"In other words… seeing through the flaw in a technique."
A flicker of thought crossed Bullet's eyes.
It was true. In earlier fights, he'd made a few judgments that felt like pure instinct.
Not the usual sense of "he's going to hit my left side", but a sudden awareness of where the opponent's energy circulation stuttered, or a faint discord in the instant a technique exerted force.
He'd assumed it was just battle-honed intuition.
Now that Rayleigh said it aloud, it sounded less like experience and more like a special tilt of Observation itself.
"Today's training is very simple."
Rayleigh pointed with the bamboo sword at the twelve dummies around them.
"I'll move between these wooden dolls and strike their marked points at random."
"Your job is, in the instant I attack, to say which mark I'm going for."
"And why that position became my target."
"Why?" Bullet frowned. "Isn't it enough to predict the location?"
"Because the 'why' matters more than the 'where.'"
Rayleigh smiled.
"If you only know I'll attack the heart, then you can only defend the heart."
"But if you understand why I chose the heart…"
"Then you can shift your center of gravity and make me lose the reason to attack the heart at all."
Bullet understood.
This was not simple foresight practice. It was tempering combat intelligence.
Not only seeing the outcome, but grasping the cause and effect underneath it.
"Let's begin."
He drew in a deep breath and closed his eyes.
Not to look with his eyes, but to "perceive" the entire ship's hold with Observation.
Under sixfold gravity, Observation's sensitivity actually sharpened.
Like hearing growing keener in a silent room.
Bullet could "hear" Rayleigh's even breathing, the steady beat of his heart, the whisper of blood moving through veins.
He could "see" the aura-field radiating from Rayleigh.
That was the vast presence only a veteran top-tier monster could possess.
But it still wasn't enough.
What he needed to grasp were not these surfaces, but something more essential beneath them.
Rayleigh moved.
No footsteps. Not even the soft snap of cloth cutting air.
A true powerhouse's movement had already approached the realm of "soundless."
Yet in Bullet's perception, Rayleigh's aura-field rippled in a subtle flow.
Like a stone tossed into a calm lake, rings spreading outward from the center.
The direction of that ripple pointed toward the third dummy.
"Right knee."
Bullet spoke, and at the same time his mind raced.
"Because that dummy's leg joint is the loosest out of all twelve. Striking there is the easiest way to force imbalance."
Before the last syllable had fully faded, the bamboo sword was already there.
Tap.
It hit the third dummy's right-knee mark exactly.
"Again."
Rayleigh's voice came from a different direction.
Second movement.
This time, the flow of aura was even more hidden. Rayleigh deliberately suppressed the disturbance.
Bullet had to drive his Observation to the absolute limit to catch that thread of nearly invisible trajectory.
"Back of the neck… no, left shoulder."
Bullet corrected himself mid-call.
"You initially intended to strike the back of the neck, but changed halfway."
"Because the dummy's head fixture just made a faint sound of metal fatigue."
"You knew a strike to the back of the neck might bring the whole dummy down, and that would interfere with the rest of the training."
The bamboo sword stopped an inch above the left-shoulder mark, not tapping down.
Rayleigh opened his eyes, surprise flashing through them.
"You can even sense the reason behind my mid-move change?"
"It's not sensing," Bullet replied, opening his eyes as well.
"It's analysis."
"Your aura hesitated for 0.3 seconds halfway along the line toward the back of the neck."
"That window was enough for me to analyze the dummy's structural state."
Silence.
Rayleigh stared at Bullet for several seconds, then suddenly burst into loud laughter.
"Good! Very good!"
"This is 'parsing-type' Observation Haki!"
He put away the bamboo sword and walked up to Bullet.
"Most people's Observation senses where the opponent is and what they're going to do."
"But you sense the movement path, the flow of energy, the structure of a technique…"
"Even every variable in the battle environment."
Rayleigh clapped a hand on Bullet's shoulder.
"Next, we move to live sparring."
"I'll attack you using thirty percent speed and power."
"Your task is not to dodge."
"It's to predict every strike I make, and state the basis for your prediction."
"And if I'm wrong?" Bullet asked.
"Then you get hit."
Rayleigh grinned, teeth showing.
"Pain is the best teacher."
The two walked to the center of the open space and stopped five meters apart.
Bullet did not dragonize, and he didn't even call up Armament Haki.
He poured every shred of focus into Observation.
"First move."
Rayleigh moved.
Still soundless, but this time Bullet "saw" far more clearly.
In Bullet's perception, Rayleigh was no longer a solid human shape.
He became an outline woven from countless lines of energy.
Those lines were the firing paths of muscle, the directions of blood flow, the subtle changes in breathing rhythm.
More importantly, Bullet could "see" the movement of Haki inside Rayleigh.
It was like luminous streams, surging through specific channels, then converging into the right hand.
Right hand. Knuckles. Index and middle finger.
"Jab. Target is the throat."
Bullet spoke, and at the same time his body tilted slightly to the right:
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