"Ash, no need for me to guess—you probably sent out Pikachu recklessly like a fool, didn't you?"
In the stands, Misty leaned in, scolding Ash with a frustrated look.
"Huh? What's wrong with that?"
"Idiot! Were you not listening before? Electric-type attacks barely affect Ground-types!"
Crossing her arms, Misty shouted angrily at Ash, annoyed that he had completely ignored her warning.
"Hmph, just watch. Natsume is challenging the Gym—he definitely won't foolishly send out Pikachu like someone else."
"Yeah, I'll be watching closely."
Seeing Ash take the matter seriously, Misty turned her attention to Natsume in the battlefield below.
Though unreliable, he was still a Pokémon researcher and knew enough common sense.
"Go, Pikachu!"
*Pika?*
Natsume's loud command echoed from the field.
Misty: "…"
*What kind of researcher is this?!*
"Oh? Another Pikachu?"
Below, Brock looked at the yawning, Midchu on the field, slightly disappointed, shaking his head.
"You won't beat me. Go, Onix!"
*Roar!*
A deep roar sounded as a massive figure composed of dark stones appeared on the battlefield.
"Activate Battle Arena!"
With Natsume's shout, intense BGM began to play.
At the same time, a stream of light entered Brock's mind, explaining the battlefield rules.
"What's that?"
In the stands, seeing Pikachu and Onix labeled with **Lv.21** and **Lv.30** above their heads, Ash and Misty were intrigued.
"You're a Pokémon researcher and have such incredible research—amazing!"
After receiving the mental briefing, Brock looked at Natsume with admiration.
Since his last battle with James, Natsume had suggested to the system that anyone he brought into a battlefield be automatically taught the battle rules.
Though he didn't know how the system rationalized it, Brock seemed to think it was Natsume's invention.
"Your Onix is also well-trained."
Brock scratched his head, assuming it was a polite compliment in return, but Natsume launched into praise without stopping.
"This Onix is a model of Rock-type excellence. Judging from the stones on its body, its primary diet should be high-purity silicate layers, supplemented with iron olivine tempered in volcanic lava to activate the genes for metallic element precipitation."
Brock's eyes widened in confusion.
Natsume continued:
"The stones on this Onix have gradually formed a honeycomb buffer structure. Judging from the membrane on its body, you likely soaked it in water for two hours before immediately exposing it to high temperatures, encouraging a water-resistant crystalline coating to form."
"How do you know that?"
Brock was shocked; everything Natsume said was accurate.
Natsume didn't reply, speaking as if to himself:
"Though this Onix hasn't evolved, it can still be called a steel beast."
"Uh… well, it's not exactly as good as you say, I just—"
"Alright, Pikachu, use Grass Knot."
*Pika!*
With a scream, Onix collapsed, unconscious.
Brock: ???
All that praise… and then it just got knocked out in an instant?
And what move did that Pikachu just use?
Everything happened so fast. Onix fell, the battlefield rules were instantly lifted, and Brock barely had time to react.
"Send out your next Pokémon."
Natsume turned to Brock.
"No need. I concede."
Brock shook his head wryly, originally intending to see what was so special about this so-called battle system.
But Natsume's Pikachu possessed a move capable of instantly defeating Onix.
There was no need for his remaining two Geodude to even step onto the battlefield.
"Wow! Natsume is amazing! He won in one move!"
In the stands, Ash was practically buzzing with excitement, as if he himself had won.
"Alright! If Natsume can win, I can't fall behind. I need to train! Pikachu, let's get stronger!"
"Hey, hey, hey! Don't you get it? That Pikachu only won because it used some weird, super-powerful move—wait for me!"
Misty stomped angrily and turned to follow him.
Below, noticing Ash leaving, Natsume made no attempt to stop him.
Wanting to get stronger was a good thing. Once Ash left Pewter Gym, it was likely he would run into Brock, who would take him to recharge Pikachu.
"Here's your badge."
Brock handed Natsume an octagonal badge with sharp edges.
"Do you have any questions for me?"
Seeing Brock seemed like he wanted to ask something, Natsume took the initiative.
"How did you know my training methods? And what move did your Pikachu just use?"
Brock didn't first ask about the move itself—he asked about what mattered most to him.
After all, his dream was to become a top Pokémon breeder.
"Oh, this?"
Natsume casually retrieved a newspaper from somewhere and handed it to Brock.
**Pewter City Pokémon Academy, Issue 32**
Brock was taken aback. He had indeed trained according to this guide, but the methods described here weren't as detailed as Natsume had explained casually.
"You…"
Brock started to speak but was interrupted. Natsume said, "I know. Take another look."
Another look?
Brock glanced at the newspaper in his hands, the **Onix Scientific Breeding Guide**, authored by Natsume.
"Let me introduce myself. I'm Natsume."
By the time Brock looked up, Natsume had already walked away.
Brock lowered his head and focused on the newspaper. Since the author told him to take another look, he read it carefully.
**I. Habitat Adaptation**Habitat Selection: Must be stationed long-term in volcanic ash sediment areas.
**II. Physical Training System**
Physical Defense Enhancement: Impact training to withstand the continuous million-ton punches of Graveler.
Attribute Resistance Specialization: Soak in heavy rain for 2 hours, then immediately expose to high temperatures.
**III. Tactical Skill Development**
**IV. Evolution Potential Exploration**
**X. Combat Deployment Warnings**
Brock read to the end without noticing anything he had missed over the years.
Suddenly, out of the corner of his eye, he saw the small print at the bottom:
*(Note: This plan has passed ethical review by Pewter City Pokémon Academy. Side effects include, but are not limited to—being so enraged by an Oddish that you explode.)*
"So that move was a Grass-type skill?"
Brock stroked his chin, eyes narrowing in confusion.
Indeed. Onix trained this way could largely resist Water-type moves, but the side effect was that it became highly vulnerable to Grass-type moves.
But he was puzzled—how could Pikachu have a Grass-type move?
You can read more (around 50+ free chapters) of Natsume's adventure ad-free at [https ://ravenarchives .com/book/pokemon-who-let-him-leave-pallet-town]. Bulk uploads is a mess here, so updates here might be irregular.