In the vast metropolis of Tokyo, specifically at Hibiya Junior High School, begins the story of Shiba, a boy who had little interest in martial arts until now.

The school bell rings through the hallways as Ms. Hazekawa stands before her class and announces, "The selection of sports clubs begins now. Please remember to consider sports other than soccer and basketball. How about badminton, for example?"

"But Ms. Hazekawa, badminton isn't fun, is it? What do you think, Shiba and Ura?" a student chimes in.

Shiba grins widely and responds confidently, "Well, we're definitely playing soccer!"

Uragiri, who is a bit taller than his classmates, adds, "What do you mean by 'we'? I want to play basketball. God didn't give me this height for nothing."

The teacher raises a warning finger. "That's enough! Since you won't listen, we'll draw lots to decide who gets into which club. Whoever I call gets to choose their club."

A storm of protest rises from the class. "But that's not fair!"

"I'm your homeroom teacher, and I decide how things work here!" Ms. Hazekawa responds firmly.

Shiba winks at Uragiri. "Well, Ura, the dream of being a basketball player is probably over. You can keep watching 'Kuroko no Basket.'"

Uragiri shrieks, "You idiot! Our chances of having to dance with some girls just went up."

"Trust me, that won't happen," Shiba replies calmly.

The drawing begins, and soon almost the entire class has been chosen, except for Shiba and Uragiri.

"Damn it, the old lady doesn't want to call us," Shiba whispers angrily.

"I told you, we're screwed," Uragiri replies quietly.

Ms. Hazekawa finally clarifies, "So! The drawing is over. Only Shiba and Uragiri are left. Since one club hasn't been chosen at all, I'll assign you both there."

"But Ms. Hazekawa, everyone else got to choose except us!" Uragiri protests.

"It wouldn't make much difference, as the soccer and basketball clubs are already full. You're going into the martial arts club," the teacher explains.

"Hey, that's not so bad. It's definitely better than dancing," Shiba says, while another student interjects, "Then you haven't heard about the martial arts club. Last year, a lot of boys wanted to join that club. Every boy switched clubs after just one session."

"Damn, he's right. No wonder we're the only ones in this club," Uragiri groans.

"Now that this is settled, we can move on to math. Don't forget, the first session of the clubs starts today!" Ms. Hazekawa concludes.

Shiba thinks to himself, "Damn math. Like I know how to solve the binomial formula. Let's see how this martial arts club goes."

The school day passes until it's time for the clubs.

Uragiri says, "Dude, let's skip today. I really don't want to get my ass kicked."

"You know we can't do that. The old lady Hazekawa already made it mandatory for us to attend because we've skipped too much," Shiba reminds him.

"We're going to lose our souls if we go there. You do realize that, you brainless idiot," Uragiri moans.

"Well, I'm going now. You can stay here and stare at the wall if you prefer," Shiba says, heading out.

"Hey, wait! I'm coming," Uragiri calls after him reluctantly.

In the gym, they are greeted by a small, old man. Uragiri whispers, "As if this grandpa is our teacher. Even a fourth-grader could knock him out."

The old man swiftly turns around. "You seem pretty mouthy."

"For your age, you have pretty good hearing," Uragiri replies, surprised.

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The old man smiles. "My 109-year-old ears miss nothing. But enough of that, let's introduce ourselves. My name is Okuwa Kamishiro, and I lead this club. My favorite food is kimchi, and my favorite movie... well, I'll have to think about that."

Shiba whispers, "Hey, Ura. Do you think this guy has any skills? He must have escaped from a nursing home."

Uragiri responds quietly, "Honestly, if we don't have to pull any crap here, he can stay."

Okuwa interrupts their thoughts, "Damn, I can't remember. But anyway, this is about you. Introduce yourselves."

Shiba steps forward. "My name is Shiba Nakamura. I'm twelve years old, and my hobbies are gaming and reading manga."

Uragiri follows, "My name is Uragiri Sanada, but you can call me Ura. I'm also twelve, and my hobby is playing basketball."

Okuwa nods. "With your height, basketball makes sense. Now then. Let's start. How about we begin with something easy? You two will fight me."

Shiba is horrified. "You must be joking. We don't want to hurt you. Besides, we're here to learn martial arts."

Okuwa shakes his head. "I don't sense any real interest in martial arts from you. So why should I teach you seriously?"

Uragiri begins to protest, but before he can say more, Okuwa delivers a quick punch to his stomach.

Shiba shouts, "HEY! THIS IS GOING TOO FAR!"

Okuwa, challenging, "Come on, I'll take you down too!"

Shiba thinks frantically, "Damn, how can I take him out? There must be a way... I'LL SWING WIDE!"

Okuwa skillfully parries the punch and throws Shiba to the ground.

"What are you going to do now? You're completely powerless against me," Okuwa triumphs.

Uragiri stammers, "I'm going to report you!"

Okuwa just laughs. "Since you haven't started crying, I'll be generous today. Come with me."

Shiba hesitates. "Hey, Ura, should we trust this psycho? What if he makes us disappear?"

Uragiri sighs. "Didn't you see? This guy is like Master Roshi's father. I think I'll switch to dancing."

Shiba holds him back. "Wait a little longer."

Okuwa urges, "Are you done? The fight is about to start."

Both follow him reluctantly as Okuwa leads them to a familiar place.

Shiba exclaims excitedly, "THIS IS THE KOURAKUEN!"

Okuwa nods. "Exactly, boy. How do you know about this place?"

Shiba explains, "I know this place from a manga. This is where fights happen."

Uragiri, now a bit excited, says, "Watching a live fight is so cool. Old man, we're even now."

Okuwa: "The fight is about to begin. We have to get inside."

Shiba thinks as they enter the huge hall, "What a big arena. And so many people watching. This is amazing!"

Here is the revised and refined version of the fight scene between Ryujin and Micheal from your book "Shiba: Battle of Honor":

The Great Fight

The commentator raised his voice, while the audience responded with anticipation and excitement. "Welcome, everyone! Today is the great martial arts fight! To my left, we have the incredible Micheal Bullwin, who has come all the way from America to defeat our favorite. Weighing in at an impressive 115 kilograms and standing 1.95 meters tall, this man specializes in hard punches that have knocked out many before. His record is 14 wins, 4 losses. And now for our crowd favorite – make some noise for Ryujin Sato!"

The audience erupted in loud chants, "Ryujin! Ryujin! Ryujin!"

"At 105 kilograms and 1.89 meters tall, our favorite specializes in counterattacks and ground fighting. His impressive record stands at 12 wins and 0 losses. Who will emerge victorious today?"

Uragiri muttered in disbelief, "105 and 115 kilograms. That doesn’t seem balanced!"

Okuwa gave him a knowing look. "Trust me, my boy, if the martial arts skills are right, anyone can move heaven and earth."

The commentator loudly counted down. "Three! Two! One! And go!!!"

Immediately, Micheal charged at Ryujin with a series of quick jabs, but Ryujin effortlessly parried them and struck back with his right hand. "And he hits Micheal!"

Shiba was amazed. "Wow! I didn’t expect Ryujin to have anything to show for it!"

"Think about it," Uragiri explained. "This guy Ryujin would never agree to a fight like this if he didn’t know he had a chance. The guy is a pro."

The commentator continued, "Micheal is taking a whole series of punches. Can he recover from this?"

In his thoughts, Ryujin taunted, "How do you like that, American? You can’t take much more."

But then the unexpected happened. "What’s this? Micheal dodges Ryujin’s punch and lands a right hand. Ryujin goes down."

Shiba groaned, "This is really bad! He’s getting worked over!"

"Don’t judge too soon, my boy," Okuwa warned.

"What?" Shiba asked, puzzled.

"The commentator didn’t mention for nothing earlier that Ryujin is good at ground fighting," Okuwa explained.

The commentator shouted, "Micheal is pounding on Ryujin. What is Ryujin doing? He’s using the turtle position, a stance to defend against punches and kicks. But how will he get out of this?"

"He can’t hold on like this for long! Ryujin needs to come up with something!" Uragiri said, concerned.

In a moment of silence, Ryujin thought, "Damn it! I need to wait for the right moment. This guy has to leave an opening."

The commentator kept the tension high, "Ryujin’s defense is weakening. It looks like Ryujin might go down soon. Is this the end of his winning streak?"

Shiba murmured, disappointed, "Damn, I guess it’s over."

Uragiri was impressed, "It’s amazing that this guy has lasted this long."

In a sudden moment of determination, Ryujin shouted, "Now’s my chance!"

"Here it comes!" Okuwa exclaimed excitedly.

The commentator screamed, "Ryujin has managed to grab Micheal’s arm! He skillfully brings Micheal to the ground and locks in a choke hold around Micheal’s head! Is it over?"

Both boys exclaimed, "No way!!"

The commentator triumphantly announced, "Micheal taps out on Ryujin’s shoulder. Ryujin has done it!"

The crowd erupted in cheers, "Ryujin! Ryujin! Ryujin!"

Ryujin stood up, raising his fist to the sky, and shouted, "Yessss!"

Okuwa turned to the boys, "That was quite something! What do you think, boys? Boys?"

But all Okuwa saw were two kids with a sparkle in their eyes, mesmerized by the thrilling scene that had just played out before them.