As everyone gradually departed, Kevin's life returned to its orderly rhythm. Drawing on the ideas that emerged during his collaboration with Kite, combined with newly acquired knowledge, he began working on new potions.
Kevin held many concepts in mind, but transforming these ideas into actual potions required significant time to carefully formulate appropriate ingredients and dosages before production could begin. This was a gradual process that couldn't be rushed. Moreover, this process allowed Kevin to understand each of his materials more deeply—knowing the characteristics of each—so he could produce desired potions more quickly in the future.
In addition, Kevin maintained his habit of consuming large amounts of food while using potions to aid training, promoting his own growth. Facts proved this growth path viable. When Kite visited, Kevin specifically requested a full body examination.
After all, he relied on [Digestion Potion] to rapidly digest and absorb energy, followed by intense training. In terms of sheer physical fitness, his growth rate was extremely fast. While previous self-examinations hadn't revealed side effects, overlooking any potential issue could have unimaginable consequences. Furthermore, this training method had continued for over half a year—even deeply hidden problems should have manifested by now.
Fortunately, after Kite's meticulous examination, the conclusion showed no relevant hidden problems. Kevin's physical fitness was incredibly healthy. This meant that as long as his body could withstand it and he didn't force overuse of potions, this training method remained harmless.
At this stage, Kevin's physical fitness allowed him to train this way once every two days.
However, as time passed, this training method's effectiveness gradually diminished.
First, the energy food could provide was limited. Even if Kevin ate only high-calorie foods, his intake had an upper limit. He couldn't literally eat until his stomach burst, and while using Digestion Potion, no matter how fast he ate, there was a limit. This energy was digested, stored, then used for intense training—but training intensity also had limits.
Kevin was training his physical body, not his Nen ability. The energy from [Digestion Potion] was digested by his physical body, not his Nen. Even if Kevin trained non-stop, he couldn't break through this limit.
Although his physical strength hadn't reached perfection, he seemed to be gradually approaching a limit, entering a bottleneck. A purely physical bottleneck.
Regarding this situation, Bisky—who possessed considerable training experience—revealed the essential reason. This reminded Kevin of their conversation days ago.
"The human body isn't something that can grow indefinitely; otherwise, humans would no longer be human. Training can indeed improve physique, but there's inevitably a limit. Moreover, while humans possess strong adaptability, this adaptation occurs over millennia timescales. Though your intense physical enhancement with potion aid hasn't produced side effects, the human body's inherent limits are difficult to easily break through."
In this world, people's physical fitness was much stronger than Kevin's original world, and they possessed the special ability called Nen. This greatly strengthened their upper limits. But essentially, they remained human, not monsters.
From Bisky's perspective, Kevin's current physical fitness was already approaching a certain limit. In terms of pure physical strength, Bisky felt confident in her judgment. After this point, even continued training with potion aid would gradually slow growth until each step forward became extremely difficult. Ultimately, he'd reach a limit state where no amount of training could improve physical fitness. This was the limit of the human body—the container itself.
At that time, Kevin had asked, "So this limit is impossible to break through? Has anyone reached such a boundary?"
As soon as the words left his mouth, Kevin felt he'd asked a foolish question. If no one had reached it, how could such inherited experience exist?
Bisky had simply stared quietly at Kevin, then pointed to herself.
To be honest, it wasn't that Kevin didn't trust Bisky. But in his understanding, physical training results inevitably reflected in appearance. A strong, resilient physique typically exhibited perfect muscle lines and robust build. Though this world had Nen, it hadn't deviated from basic physical laws.
Given Bisky's current appearance and physique resembling a young girl, it was genuinely difficult for Kevin to believe she'd reached her physical limit. While Bisky's body proportions were perfect with signs of training, she didn't look like someone who'd reached the limit at all.
Perhaps she'd only reached the limit state presentable in young girl form. More likely, she used her Nen ability to disguise herself. If so, Bisky's original appearance was something not to contemplate—definitely not to contemplate.
Facing Kevin's doubts and confusion, Bisky clearly had no intention of explaining—she didn't even allow Kevin to continue asking. Mori had been present at the time and remained absolutely silent on the matter.
Kevin didn't dwell on it. He was more concerned about another question.
Regarding this question, Bisky had answered, "Relying solely on self-training, this limit is indeed difficult to break through. But this world is vast and boundless; relying only on one's own strength is certainly not enough, but with external help, breakthrough becomes possible." She'd glanced meaningfully at Kevin. "Take your potions, for example. If you can obtain the most top-tier materials, I believe you have the ability to create potions that can break through limits."
Kevin had nodded in agreement. The problem was that he currently possessed no such materials at all.
Then understanding dawned. He'd silently glanced at Bisky; they'd tacitly stopped discussing the topic.
Indeed, someone as experienced as Bisky couldn't possibly be unaware of the [Dark Continent]'s existence. Bisky seemed certain the Dark Continent held materials capable of breaking limits—did the Hunter Association possess relevant records? Had the Association actually been to the Dark Continent?
Kevin couldn't answer this. He knew very little about this area, having only heard bits and pieces from Jin.
Bisky developed a training plan for Kevin.
"Though potion-assisted training can no longer strengthen your physical fitness further, you're already approaching the limit. This undoubtedly lays an extremely solid foundation."
Kevin indicated understanding.
"Now shift your focus to other areas—speed, flexibility, agility. These can't be achieved through physical fitness training alone. Furthermore, you need to tap your potential internally. Your Nen capacity is severely mismatched with your physical fitness. With your current physique, increasing Nen capacity several times—even ten times—is not a problem."
"Nen capacity connects closely to physical fitness. Though not perfectly matched, they profoundly influence each other."
Simply put, Kevin's body had become a container whose capacity approached human limits, but within the container, the liquid called "Nen" occupied only a thin layer. He needed to fill it with more.
Bisky's final plan: at this stage, use potions for training once every five days, or even once weekly. Physical fitness no longer needed excessive strengthening—the foundation was solid. What needed attention now was letting this near-limit body achieve results in other aspects. Otherwise, no matter how strong your physical fitness, insufficient Nen capacity meant you couldn't withstand someone else's punch. At most, you'd be more resistant to beating than others.
Currently, Kevin possessed only two potion types effective for training.
[Digestion Potion] could improve physical fitness through heavy eating and intense training, but was limited to that. It had no effect on flexibility, agility, speed, or internal Nen quantity. Without doubt, however, this potion enabled incomprehensible physical improvement speed.
When officially opening for business, perhaps this potion should be separated into regular and enhanced versions. His current potion knowledge allowed this.
Scheming merchant thoughts stirred in Kevin's mind.
Another potion, [Strength Potion], when used with high-intensity training, could slightly increase "manifest" and "potential Nen capacity." Of course, this increase was limited to Kevin—his [Blank Meteor] enabled this step.
In the nearly year and a half since Kevin transmigrated, this potion played a crucial role in recovering original strength and increasing Nen capacity to 21,000. However, this was also based on a strong physical foundation. This explained why Kevin knew Nen capacity mattered more but chose to focus on physical fitness training—the improvement speed was too fast, benefits far exceeding others.
He could also use [Strength Potion] during the cooldown period after taking [Digestion Potion]. The two alternated without conflict.
But gradually, this potion's improvement effects began falling short of expectations. Anything's improvement has diminishing returns—[Strength Potion] was no exception. After all, it was just an ordinary C-rank potion.
Though it could still marginally increase Kevin's Nen volume, compared to the total volume he hoped to achieve, the gains had become negligible. Still, adhering to the principle of "no alternative, even a mosquito is still meat," Kevin continued using this potion long-term. The speed of his Nen growth had indeed slowed significantly.
Regarding this situation, Bisky offered an interesting perspective.
"If you weren't an Enhancer, I'd advise focusing on other aspects rather than blindly pursuing basic Nen volume increase. But you are an Enhancer, training toward the most extreme strengthening direction. So focus solely on increasing Nen volume. Thinking about how to release more Nen, how to gather more Nen—that's your current key task."
This was Bisky's view.
Enhancers were like that—simple and direct. Constantly throw punches. Throw them hard. Throw them extremely hard. As long as the thrown punch was strong enough and Nen sufficient, many seemingly complex problems could be overcome with pure force. All martial arts in the world: nothing unbreakable, only speed unbeatable.
Moreover, Kevin possessed extraordinary Nen control and a Nen ability that could fix potion effects. Especially the two techniques "Burst" and "Iron Wall"—clearly derived from potion effects—perfectly suited Kevin's current combat style. An Iron Wall punch bursting beyond limits—just hit, and each hit silenced pain.
Kevin had clearly thought deeply about this, maintaining a clear plan for his goals. Precisely because of this, Bisky felt confident in Kevin's self-training, firmly believing he would grow to unattainable heights.
Kevin understood Bisky's suggestion. Low-level potion usage had reached its limit. Before higher-level potions arrived, he'd honestly train using traditional methods during this window. Though improvement speed wasn't as exaggerated as with potions, it wasn't far off given Kevin's abilities.
Kevin pondered these matters while planning his next tasks—a long-developed habit. Whenever completing one stage, he'd list next-stage items, then complete or prepare them one by one.
After Bisky's analysis, Kevin decided on Nen awakening for the three Kurta children.
Second: build a shopping website and solve goods logistics.
Red Stone Pharmaceuticals Company—he needn't worry much about this. He'd briefly checked; the project progressed steadily. Light was dedicated to his career, and with Kevin's potions, rapidly built connections. He possessed extremely high talent in this area. Especially now that Kevin backed him, providing ample confidence. Light also witnessed Kevin's "connections"—those strange, seemingly powerful characters.
Next: strengthen "A Moment's Dream" and materialize additional tools. He had initial ideas for both routes, steadily pushing them forward.
Then: new potion production. Couldn't be rushed. He had concepts; related operations had already begun. With sufficient materials, producing a new potion batch to strengthen his power made sense.
Kevin rubbed his head, rose, and left the room. He instructed nearby servants to inform Kurapika and the others to await him in the indoor training room.
Soon, within the manor's newly completed indoor training ground, the group assembled.
Kevin regarded the three Kurta children before him. "After consideration, I've decided to perform Nen awakening for you."
Kurapika and Pairo instantly grew excited—they'd long awaited this. Even Rosana showed curiosity mixed with nervousness. Under Kevin's teaching and demonstration, she'd become curious about Nen abilities.
Kevin's expression turned serious, focusing intently on Kurapika and Pairo. "You two—let's make an agreement."
They nodded solemnly, not even asking what agreement.
"I'll perform Nen awakening and teach related techniques in depth. However, Nen ability construction must wait one year. During this year, you may only conduct basic Nen training and meditation."
This was Bisky's teaching experience—Mori concurred. For geniuses, building abilities after laying solid foundations was necessary. For those less talented, constructing after mastering the Four Major Principles sufficed.
As a Gem Hunter, Bisky had always believed in "teaching according to aptitude." Before him stood only a few individuals—Kevin could also achieve this standard.
Kurapika and Pairo exchanged glances, then turned and nodded vigorously at Kevin. Under Kevin's guidance during this period, they'd learned the importance of proceeding step by step and laying solid foundations. Even for revenge, they must not act rashly.
Kevin smiled and extended his fist. "Then it's settled."
"Okay!" The two responded in unison.
Their three fists gently bumped together.
Rosana stood nearby, watching this scene with satisfaction.
"May I ask—do I also need basic training and to construct Nen ability after one year?" Rosana inquired.
Kevin smiled and shook his head. "No, you don't need to."
Unlike Kurapika and Pairo, though Rosana was a simple woman with limited outside contact, she was an adult after all. Her psychological endurance and various other conditions already met requirements. Moreover, judging from training during this period, Rosana's talent clearly fell short of Kurapika's and Pairo's. Though she actively participated in combat training, her progress in combat ability could only be described as average. In physical training, she achieved good results, but still lagged behind the boys.
Digestion Potion would help address this.
However, Rosana's speed in learning knowledge was extremely fast. She already followed Light to learn management principles and was even self-studying finance and other fields. Aside from training, most of her time was spent around Light, gaining experience. She was a smart woman who keenly perceived the team's needs and actively filled gaps.
Her motivation for training and yearning to learn Nen wasn't revenge. Though Kevin wasn't entirely clear about specific reasons, he knew Rosana's hatred was far less intense than Kurapika's and Pairo's. She was more driven by a desire to protect. She knew her son and Pairo—whom she regarded as a godson—would inevitably embark on the path of revenge. She wouldn't stop them, nor could she. But she refused to become a burden again, or someone needing protection as before. She hoped to provide help and protection, not the reverse.
Therefore, mastering Nen was very necessary for her. She would go all out, hoping someday to provide assistance to Kurapika and the others.
Kevin addressed them. "I believe you already understand and are familiar with how to control your Nen. Now, I will stimulate the Nen pores in your bodies. At that moment, your Nen will gush out uncontrollably. According to previous training methods, control your Nen, wrap it around yourselves, and complete basic Nen awakening."
The three nodded. They knew this process well—now they would truly put it into practice.
Kevin extended both hands. Kurapika and Pairo placed their hands on Kevin's left hand; Rosana placed hers on Kevin's right. All three closed their eyes simultaneously.
Kevin controlled his Nen. With excellent Nen control, he easily invaded their bodies and gently activated their Nen pores.
The three's Nen instantly erupted. Eyes still closed, they focused on meditating and attempting Nen control.
Kevin stepped back.
He had to admit—he might have underestimated Kurapika and Pairo. The Nen they erupted clearly exceeded normal standards.
He immediately began vocal guidance. Though they understood the entire process, Kevin's voice at this moment could strengthen their thinking and control, helping them better manage their Nen.
Not long after, Kurapika and Pairo achieved the "Ten" state.
Shortly after the boys finished, Rosana also successfully reached this step. This owed to both their talent and the intensified training's effectiveness during this period. All three perfectly met expected standards—they'd completed it even more easily than Mito had back then.
"You should have felt it—that thing wrapped around your bodies, invisible and intangible."
The three nodded, truly experiencing this wondrous state.
"Now, let's begin basic teaching."
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