Sailing: I was falsely accused of watching Nami bathe, but I'm blind.

Kai stretched out his finger and gently stroked the uneven texture of the rubbing. His fingertip was like the most precise probe, carefully sensing every turn, the depth of every engraving, and the shape of every edge. "Hmm," he pondered for a moment, "these lines are ancient, the engraving technique is very steady, but there is a subtle pause and a concentration of power at the turns. It's not like a simple record of words, but more like a... map of energy flow, or rather, a sealed mark. When I touch them, I can feel a faint, dormant aura."

A flicker of surprise and admiration crossed Robin's eyes: "A pattern of energy flow? A seal? That's a truly unique sensation. Thank you, Kai, this has given me some new perspectives." She had always felt that Kai was an enigma; his perception of the world was completely different from ordinary people, yet exceptionally precise and profound. She respected his differences and appreciated his unique sensitivity.

Kai simply nodded slightly, turning his attention back to the distant sea, feeling the warmth of the sun on his skin, listening to the cries of seagulls soaring through the sky, continuing to immerse himself in his silent, lightless, yet incredibly rich sensory world. Life on the ship continued day after day, filled with adventure and laughter, but also with misunderstandings and estrangement, and all of this seemed to be merely the prelude to some huge turning point in the future.

Chapter 5: The Pirate Crew Invades!

The lunch bell rang, and an enticing aroma immediately filled the kitchen. Sanji was wielding a kitchen knife, deftly processing various ingredients while humming an off-key love song. Kai, meanwhile, sat quietly on a small stool nearby, holding a potato and a peeler, helping out. His movements seemed slow, even somewhat mechanical, but his efficiency was surprisingly high. Thin potato skins were peeled off neatly like ribbons, falling into the bucket beside him, while the potato itself was smooth and round, with almost no unnecessary cuts or damage to the flesh.

Sanji occasionally glanced at Kai, noticing the small mountain of potatoes piled up in front of him. Looking at his own team's varied but slower-paced preparations, a subtle, inexplicable displeasure rose within him. This displeasure was complex, a mixture of admiration for Kai's efficiency and focus, an inexplicable sense of competition, and perhaps even a hint of defeat at being outdone, especially in his prized culinary field—even something as simple as peeling potatoes.

“Hey, Kai,” Sanji said in a joking tone, trying to hide his little scheme, “you can do a job so well even with your eyes closed. Have you secretly practiced some kind of unparalleled swordsmanship?” As he spoke, he exaggeratedly twirled his sword, almost slicing the onion next to him away.

Kai's hands didn't pause for a moment; he didn't even look up, simply replying calmly, "Practice makes perfect." He could clearly "hear" the slight awkwardness in Sanji's tone, but he chose to ignore it. On the ship, he had long been accustomed to being the center of attention and jokes, and he was used to responding with silence and the most concise language.

Just then, Nami walked into the kitchen with a sea chart in her hand, her face showing a hint of excitement and anticipation. "Sanji-kun, is lunch almost ready? Kai, it's perfect that you're here too, let's discuss our next stop, 'Whispering Town.' The chart says it's a very bustling port, and there's even a famous hot spring inn!" she said, spreading the sea chart out on the table beside her.

Kai stopped what he was doing, turned slightly to face the direction from which Nami's voice came. "Whispering Town," he repeated the name, then closed his eyes (though it made no difference to him), listening intently to the sounds coming from the open kitchen window. "I hear the seagulls' cries are getting higher, and their circling seems to be concentrated in the southeast. The sound of water lapping against the hull is also becoming more rhythmic, with an echoing quality as if it's approaching land. Judging from the wind direction and our current speed, we should be able to see the outline of Whispering Town in less than two hours; the location is basically accurate." He was like someone deciphering an invisible sound map, combining and analyzing various subtle sound information to arrive at a precise conclusion.

Nami once again showed a surprised yet matter-of-fact expression: "Wow, Kai, you can even 'hear' this? You're so reliable! With you around, I feel that sailing is much easier." She didn't hold back her praise; in her opinion, Kai's ability was invaluable in navigation.

Sanji listened to Nami praising Kai, and a barely perceptible pang of jealousy resurfaced in his heart. He felt that ever since Kai joined the crew, Nami and Robin seemed more willing to talk to this taciturn guy, especially when discussing serious matters. Perhaps it was because Kai was always so calm and composed, never losing his composure like himself when he saw beautiful women? Or was it because his "magical" abilities were indeed very useful? Sanji pursed his lips, sped up his chopping, making even louder noises, trying to attract the attention of the two ladies.

Soon, a sumptuous lunch was laid out on the table. Luffy was the first to rush over, grabbing large chunks of meat and stuffing them into his mouth, his mouth dripping with oil as he mumbled "Delicious!" In the chaos, a piece of meat covered in sauce flew off Luffy's fork and hit Kai squarely in the face.

For a moment, the atmosphere at the table froze. Nami frowned, Usopp gaped, and Sanji stopped his fawning. Everyone stared at Kai, waiting for his reaction. However, Kai only paused for a moment, then silently picked up a napkin and calmly and carefully wiped the food crumbs and sauce from his face. There was no disgust, anger, or embarrassment on his face, not even a twitch of his muscles, as if he had simply been brushed aside by the wind. After wiping himself clean, he nonchalantly picked up his cutlery and prepared to eat.

This subtle moment, devoid of the emotional response expected of a normal person, was once again overlooked by everyone. Luffy casually apologized and then continued to eat with his head down. The others were quickly drawn back to the lively atmosphere at the table, and no one delved into the reason behind Kai's overly calm reaction. It was because he simply couldn't "see" how the food had unpleasantly gotten on his face; all he felt was a sudden foreign object on his face and a change in temperature.

Sanji looked at Kai's overly calm face, then at Nami's beaming smile and Robin's gentle grin, and the indescribable feeling in his heart became even clearer. This Kai, despite being a newcomer, always managed to integrate into the group in a peculiar way, even gaining more respect and trust than him, the "veteran," in some ways. Especially Nami and Robin—their calm and natural manner when speaking to Kai made Sanji feel a surge of inexplicable anger. He decided that when they arrived in Whispering Town, he would definitely make a good impression and show Nami and Robin who the most reliable and gentlemanly man on the ship truly was.

Kai ate his lunch quietly, savoring the taste and texture of the food. He could sense the emotional fluctuations of everyone at the table: Luffy's pure appetite, Nami's cheerfulness, Usopp's chatter, Zoro's quietness, Chopper's innocence, Robin's composure, and even Sanji's subtle, negative emotions hidden beneath his enthusiastic exterior. He silently absorbed all of this, continuing to play the role of the silent, reliable, yet enigmatic crew member. He knew that as long as he didn't actively uncover the secret, this harmony based on misunderstanding might continue indefinitely. However, secrets always carry the risk of being discovered, and misunderstandings, in some unguarded moment, could ferment into an irreversible poison.

The peaceful voyage didn't last long. The weather on the Grand Line is unpredictable; one moment the sky was clear, the next, an ominous cloud had rolled in. Worse still, beneath the cloud, several pirate ships flying the skull and crossbow flag were menacingly closing in on the Going Merry. Usopp on the lookout immediately sounded the alarm: "Enemy attack! It's the 'Black Shark' Pirates! They have three ships, and they're closing in from the left and right!"

"What? These guys are persistent!" Nami's expression changed. The Black Shark Pirates were notorious raiders in the nearby waters, known for their ferocity and cunning.

Chapter 6 How dare you! You actually peeked at Nami!

Upon hearing that there was a fight, Luffy immediately became excited, cracking his knuckles: "Oh! Perfect for stretching my muscles! Ladies, prepare for battle!"

Zoro gripped the hilt of his sword, his eyes sharpening. Sanji immediately shielded Nami and Robin, assuming a fighting stance. Chopper also transformed into his beast form, ready to provide support.

Kai remained standing on the ship's railing, his back to the cabin, facing the direction of the approaching enemy. He wasn't as fired up as Luffy and his crew, nor as tense as Nami; his expression remained calm, but his body was slightly taut, like a fully drawn bow. His senses expanded with unprecedented intensity, covering the surrounding sea and the approaching enemy ships. The murderous aura in the air, the pounding of enemy hearts, the sound of ships breaking the surface, even the subtle metallic scraping of cannonballs being loaded—all were clearly fed into his mind, forming a dynamic, three-dimensional "image" of the battlefield.

"The ship to our left has five men on the foredeck, two with guns and three with knives. They are expected to be within musket range in ten seconds. The ship to our right has its broadside gun ports open, and three cannons are aiming at our mainmast." Kai's voice rang out clearly, like a prophet on the battlefield, accurately reporting the enemy's movements and threats.

"Damn it! Are they trying to break our masts?" Nami immediately ordered the ship to adjust its course in an attempt to avoid the shelling.

"Leave it to me!" Luffy shouted, "Gum-Gum Rocket!" He stretched out his arms and blasted the enemy ship to his right.

Almost simultaneously, Kai spoke again: "Luffy, two people to your right rear! Prepare to board the ship with the grappling hook from near where you bounced back!" His warning was half a beat faster than the enemy's actual action.

Sure enough, under the cover of Luffy's attack, two members of the Black Shark Pirates darted across the gap between the two ships like ghosts, their gleaming grappling hooks aimed straight for Luffy's back. But thanks to Kai's warning, Luffy twisted his body mid-air and kicked the two men back into the sea.

"Zoro, cannonballs from above!" Kai's voice rang out again.

Zoro didn't even look up. Relying on his absolute trust in Kai's warning, he suddenly lowered his body and shouted, "Three-Sword Style: Demon Slash!" The sharp blade slashed upwards, splitting a whistling cannonball in two, which exploded in mid-air, scattering fire and fragments everywhere.

The battle quickly intensified. Relying on their numerical superiority, the enemy launched relentless attacks, bullets, shells, and melee weapons weaving a dense web of fire. The deck of the Going Merry was instantly filled with peril. However, thanks to Kai's continuous and accurate warnings, the Straw Hat crew always managed to react at the most crucial moments, defusing crisis after crisis.

"Sanji, watch your step! Someone's diving from underwater at three o'clock!"

"Chopper, cover Nami! There's a stray bullet on starboard!"

"Usopp, your slingshot is off to the left by three degrees. Correct it!"

Kai was like a tireless battlefield commander; his voice, though not loud, always pierced through the noise and reached the ears of every comrade. He himself moved like a ghost along the ship's side, his body always half a step or even a full step ahead, dodging stray bullets and flashing blades with minimal movement. He never attacked first; all his movements revolved around "perception" and "evasion." He kept his eyes closed (though this was the norm for him), yet his body was exceptionally agile and swift; every sidestep, crouch, and lateral movement was perfectly timed to evade fatal attacks.

To onlookers, Kai seemed to possess almost supernatural dynamic vision and reaction speed, as if he could see through every attack trajectory and predict every move of his enemies. Usopp was dumbfounded, muttering to himself, "Has Kai really gained 'mind's eye'? He's too strong!"

The battle lasted for about fifteen minutes. With the Straw Hat crew's strong individual strength and Kai's precise battlefield support, the Black Shark Pirates' three ships were shattered and suffered heavy casualties, ultimately forcing them to retreat in a sorry state.

After the battle, the deck was a mess, but thankfully no one was seriously injured. Chopper busied himself treating the wounds of his injured companions. He ran to Kai and noticed a shallow cut on Kai's arm, from a weapon, that was oozing blood.

"Kai, you're hurt!" Chopper said with concern, taking out his first-aid kit. "Why didn't you move aside? Let me bandage you up."

Kai let Chopper treat his wound, his face remaining expressionless. "I sensed it a little too late; I avoided a vital spot," he said casually. In fact, the wound was caused when he was simultaneously alerting to threats from three different directions, his attention was slightly diverted, and he failed to perfectly dodge a sharp, piercing blade.

As Chopper carefully disinfected and bandaged him, he looked up curiously and asked, "Kai, how do you 'see' so many attacks? Sometimes the enemy is clearly hiding in the smoke, or attacking from a very tricky angle, but you can still spot them in advance. That's amazing!" Chopper's eyes were filled with pure curiosity and admiration.

Kai paused for a moment, then answered in his usual vague manner, "I just... focused very intently on listening and feeling. The sound of the wind, breathing, the sound of weapons cutting through the air, and the... well, intentions emanating from them. Combining these, I could roughly determine their location and actions." He tried to explain in terms that ordinary people could understand, but in reality, the kind of ability that transcended the five senses that he relied on was far more complex than that.

"Wow! I see!" Chopper nodded, seemingly understanding, interpreting it as an extremely advanced technique for focusing during combat. "Kai, you're a genius!"

Kai didn't speak again, only feeling the slight constriction from the bandage on his arm. He knew that his explanation had once again successfully concealed the truth beneath a seemingly reasonable pretext. The crew had become accustomed to his "extraordinary performance" and had spontaneously found "logical" explanations for it. This misunderstanding acted as a protective shell, allowing him to remain safely within the group, but also as an invisible wall, isolating him from his comrades. He looked down at his bandaged arm, a complex emotion that no one could understand passing through his mind. How long could this continue?

Chapter 7 The Stars Are Beautiful

Night fell again, and the sea returned to its deep and tranquil state. After a day of fighting, most of the crew had long since fallen asleep, the cabins filled with the even sound of breathing. Kai volunteered for the first half of the night's watch. He stood alone at the bow, facing the cool sea breeze, quietly "standing." For him, the watch wasn't about sight, but about extending his senses as far as possible, like an invisible net covering the waters around the Going Merry. The rise and fall of the waves, the movement of schools of fish, the outlines of distant islands, even the surging of the undercurrents, were all vividly present in his "mental image." This was a unique "watch" of his own.

"Kai, still awake?" A slightly sleepy but still energetic voice came from behind. Usopp yawned, holding a roll of drawing paper, and slowly walked to Kai's side. "Hehe, I can't sleep, so I'll show you my new star map! This is a unique version I drew based on the constellations of the first half of the Grand Line, combined with my great imagination!"

Kai turned around, facing the direction of Usopp's voice, and nodded slightly in greeting: "Usopp."

Usopp excitedly unfolded his drawing paper, on which various bizarre constellation patterns were sketched in charcoal, with names of heroes or monsters he had named himself. "Look, look!" Usopp pointed to a spot on the drawing paper, then excitedly pointed to the starry night sky, "This! This is what I named 'Sniper King Star'! Doesn't it look like a brave warrior wearing a mask and holding a slingshot? And that one over there, doesn't it look like a giant sea king? I call it 'Deep Sea Giant Constellation'!"

Kai listened quietly to Usopp's explanation, his ears catching the pure excitement and pride in Usopp's tone, and his face occasionally flashing a cooperative smile. He could sense the movement of Usopp's fingers on the paper and the general direction he was pointing towards the night sky, but he couldn't truly "see" the dazzling Milky Way, nor could he appreciate the specific details of Usopp's drawing. He could only construct a vague picture through imagination and Usopp's vivid description.

“Hmm, that sounds impressive,” Kai replied in a calm yet polite tone.

Usopp spoke with great enthusiasm, but after a while, he gradually sensed something was amiss. Kai was listening and responding, but his gaze never truly landed on the drawing paper, nor did he follow Usopp's finger to look at the sky. He simply stood there quietly, his face turned towards him, a smile playing on his lips, but his eyes… Usopp suddenly felt that Kai's eyes seemed to lack a certain sparkle, especially under the starlight, appearing exceptionally deep and devoid of any reflection. Was it his imagination? Or was Kai simply not interested in the stars and was lost in thought?

"Um... Kai, don't you like stars?" Usopp asked uncertainly.

“No, the stars are beautiful,” Kai replied. His “beauty” didn’t come from sight, but from the tranquility of the night sky, the faint energy fluctuations of starlight, and the pure joy Usopp shared. “It’s just that I’m more used to understanding the world through hearing and feeling.”

Usopp scratched his head, finding Kai's answer somewhat strange, but he couldn't quite put his finger on it. Perhaps it was just Kai's unique personality, always so different from the norm. He dismissed his doubts and continued enthusiastically introducing his other "great discoveries."

Just as Usopp was speaking animatedly, Kai's expression suddenly changed slightly. He abruptly raised a hand, signaling Usopp to stop. "Wait," he said, his voice tinged with wariness.

"What's wrong, Kai?" Usopp was startled by his sudden seriousness.

Kai listened intently to the underwater sounds, his brow furrowing slightly. "About three hundred meters ahead, there's a large group of reefs underwater. The current becomes very rapid and chaotic there. We must change course immediately, veering at least twenty degrees to the left!"

Usopp was startled and immediately shouted towards the helm, "Nami! There's a reef ahead! Kai said to veer twenty degrees to the left!"

Nami, still on duty in the navigation room, heard the shouts. Although somewhat puzzled (the nautical chart didn't indicate a large reef at such close range), she immediately carried out the operation out of trust in Kai's abilities. The ship quickly adjusted its course, passing close to the edge of a faintly visible black reef. By the starlight and the ship's lights, the jagged outline of the reef, powerful enough to easily tear apart the ship's hull, could be vaguely seen beneath the water, sending chills down the spines of many.

"Whoa! That was close! There really was a reef!" Usopp patted his chest, still shaken. "Kai, you saved us again! Your eyes are amazing! You could see an underwater reef so far away in this dark night!"

The other crew members, also awakened, echoed Kai's praise, marveling at his "amazing night vision." No one doubted how plausible it was for someone with "excellent eyesight" to spot an underwater reef in such pitch-black darkness. Kai's ability was once again perfectly "explained."

Kai did not respond to the crowd's praise, but instead turned his attention back to the sea ahead. He felt the cool sea breeze on his cheeks, listened to the eternal rhythm of the waves lapping against the ship's side, and sensed the subtle breaths of all things under the night sky.

This tranquility, unpretentious and purely sensory, was a rare enjoyment and solace for him. He was like a silent lighthouse, guarding the small boat carrying dreams and companions in his own unique way, sailing towards the unknown distance. However, he also knew in his heart how fragile this balance, maintained by misunderstanding, was.

After a smooth night's voyage, as the first rays of dawn pierced the sea fog, the outline of a prosperous island finally appeared before everyone's eyes. Masts stood tall in the harbor, buildings lined the shore, and the faint sounds of bustling people could be heard. The air was filled with the smells of the sea, the aroma of food, and a faint scent of sulfur.

"Oh! We're finally here! Whispering Town!" Nami stood at the bow of the ship, holding binoculars (although Kai's forecasts were always earlier and more accurate, it had become a habit for her), and exclaimed excitedly, "It looks even more lively than the intelligence said! I can smell the hot springs! I'm going to take a nice bath and relax!" Her eyes sparkled with anticipation for a comfortable vacation.

"Meat! I want a feast! Where is the biggest restaurant in town?" Luffy was so excited that he was waving his arms and legs, his mouth was practically watering, and his mind was already filled with all sorts of delicious food.

Usopp and Chopper chattered excitedly about going to the town market to buy some novelties and medicinal herbs. Zoro yawned, seemingly uninterested in shopping, but didn't object to disembarking. Robin, on the other hand, was more interested in the origin of the town's name and any possible historical sites. Sanji, meanwhile, busied himself tidying his appearance, preparing to show his most charming side to the town's beauties.

Chapter 8 Disembarkation

Amidst the excitement and commotion, Kai remained remarkably quiet. When assigning tasks, Nami, considering his "characteristics," entrusted him with guarding the ship and conducting preliminary reconnaissance of the port. "Kai, we'll leave the ship to you for now. Also, keep an eye on the area around the port for us, see if there are any suspicious individuals or anything that needs attention." Nami felt that Kai was meticulous and had keen senses, making him the perfect candidate for this job.

“Okay,” Kai replied calmly.

The group eagerly disembarked, greeted by a whiff of sweat, cheap perfume, wood and stone, along with a subtle, musty smell lurking in the corners, and... a faint, almost imperceptible "pheromone" carrying tension and unease.

Then he began to move. His steps were slow but unusually steady, each step as if precisely measured. Sometimes he would reach out and touch the rough mooring posts by the dock, feeling their texture and temperature; sometimes he would lightly kick the ground with his toes, distinguishing between planks, stone slabs, and mud; sometimes he would listen intently, taking in the distant clamor of the market, the clanging of the blacksmith's shop, the noise from the tavern, and even the secret whispers behind the attic windows.

He walked around the dock several times, seemingly aimlessly, but in reality, he was rapidly constructing a three-dimensional "mental map" of this port town in his mind. The shape, height, and material of the buildings; the direction and width of the streets; the density, speed, and general direction of the flow of people; the sources of various sounds and smells and their intensity changes... All this information flowed into his consciousness like a trickle, forming a "picture" that was more detailed and vivid than what he saw with his eyes.

As he constructed the map, Kai's brow furrowed almost imperceptibly. He sensed an unusual undercurrent beneath this seemingly bustling town. Several individuals stood out as particularly discreet and wary among the crowds, and the air, besides the normal hustle and bustle, was punctuated by deliberately hushed conversations tinged with anxiety or conspiracy. The town's overall "atmosphere" gave him a feeling that beneath its outwardly glamorous exterior lay a tense and even decaying core.

"This town doesn't seem as peaceful as it appears," Kai murmured to himself.

When Luffy and his crew finished their first round of shopping and foraging and returned to the ship to unload their cargo, Kai briefly shared his impressions with everyone: "I scouted around the port and it seems a bit strange about this town. There seems to be some undercurrents. Everyone should be vigilant when going out and try not to act alone, especially in remote areas."

However, the group, caught up in the excitement of their vacation and fun, didn't take Kai's warning to heart.

"Relax, relax, Kai, you're just being too cautious." Luffy patted Kai on the shoulder casually. "It looks so peaceful here, what could possibly happen? We're the Straw Hat Pirates!"

“Yes,” Nami said with a smile, “Maybe you’re being too sensitive, Kai. But don’t worry, we’ll be careful. I’m going to enjoy my hot spring now!”

Watching his companions excitedly depart once more, Kai said nothing more. He knew his warnings would often be dismissed as unfounded worries. He simply returned silently to the ship's railing to continue his "watch," but the unease in his heart did not dissipate; instead, it grew clearer with time. He could sense that a storm was brewing in this small town called "Whispers." And this storm might, in a way he had never anticipated, draw him in and completely alter the trajectory of his life.

Whispering Town lived up to its reputation. Several sizable hot spring inns nestled in the town center, with wisps of steam rising from the carefully designed bamboo tubes and artificial hills, filling the air with the rich smell of sulfur and damp wood. After careful selection by Nami, the Straw Hat crew finally chose an inn called "Shizuru-kaku" to stay at. This inn was not only large but also had an elegant courtyard and separate open-air hot spring baths for men and women, which suited Nami perfectly.

Once they had settled their luggage, Nami grabbed Robin, who was also quite interested in relaxing, and eagerly changed into yukatas. Chattering excitedly, they headed towards the women's bath, their faces beaming with anticipation. Robin, a slight smile playing on her lips, followed calmly behind, enjoying this rare moment of leisure.

Luffy, on the other hand, was a completely different story. The moment he entered the inn, his nose, like radar, locked onto the restaurant. He grabbed the equally greedy Usopp and Chopper and dashed over like the wind, shouting, "Boss! Bring me all your best food!" Zoro, however, seemed uninterested in any of this. He found a quiet corner, hugged his three swords, and appeared to be planning to take a nap.

As for Sanji, his heart had already flown towards the women's bath with Nami and Robin. He outwardly pretended to casually straighten his suit, but his eyes kept glancing in that direction. He kept making excuses, saying he needed to check if the kitchen ingredients were fresh, then that he needed to check the inn's structure for safety, lingering inside the inn, especially in the corridors and courtyard near the hot spring area. His heart was like a cat scratching an itch, yearning to capture some "accidental" glimpses of the bath, yet fearing discovery and the incurment of Nami's iron fist and Robin's cold gaze. His mind was filled with conflicting emotions and restless desire.

Kai was given a relatively "leisurely" task by Nami. Near the hot springs was a secluded little courtyard, a tranquil environment, with a large amount of supplies they had just purchased from town piled up beside it, including food, fresh water, ship repair materials, and various strange gadgets Usopp had bought. Nami thought this quiet place, where he wouldn't be easily disturbed, would be perfect for Kai to "concentrate" and utilize his unique "vigilance ability," while also guarding these important supplies. This reason sounded reasonable and aligned with the common understanding that Kai needed a quiet environment to utilize his "supernatural senses."

Chapter 9 Who's peeping there?!

Kai had no objection to this.

He silently arranged the supplies neatly, then sat down on a flat stone in the center of the courtyard.

He habitually closed his eyes, though this made no difference to his world.