**Chapter 46: Eren's First Battle**
The moon hung high in the sky, casting a cold silver glow over the western forest of Konoha.
The three children were chatting excitedly after their sparring match, but one figure remained silent, standing under the shadow of a tree.
Eren Yeager.
He clenched his fists tightly, his gaze locked onto the massive tree where Obito and Gai had just fought.
That battle—a fight between two mere children—was executed with such speed, precision, and rhythm that it left him astounded.
No Titans. No advanced weaponry.
Just pure human ability, yet they fought at a level he had never seen before.
Eren looked down at his hands.
A strange power stirred within him.
A wild, untamed energy coursed through his veins, urging him to move.
He gritted his teeth and stepped forward.
"I want to fight."
---
**Kakashi vs. Eren – A Clash Between Two Worlds**
Silence fell over the camp.
The three kids turned to Eren, their faces a mix of surprise and curiosity.
Kakashi looked up, his deep black eyes calmly assessing the newcomer.
Satoru raised an eyebrow.
"Eren, are you sure?"
Eren didn't respond. He only nodded.
He didn't know why he wanted to fight.
Maybe it was curiosity about the power of the people in this world.
Or maybe… deep inside, a part of him was desperately searching for something to hold onto.
Satoru smirked slightly, then turned to Kakashi.
"Kakashi, what do you think?"
Kakashi remained silent for a moment before nodding slowly.
"…Fine."
Two figures stood face to face.
One was a young prodigy, hailed as "the most gifted ninja of his generation."
The other, a soldier from another world, who once held the power to wipe out humanity but was now left with nothing but a hollow body and a broken soul.
"Begin!"
BAM!
Kakashi vanished.
Eren's eyes widened.
"He's fast!"
Before he could react, a kick from the left struck him hard!
THUD!
Eren was sent flying, rolling across the ground!
But the moment he hit the dirt, his body instinctively responded!
He had fought before.
Eren Yeager.
A man who had survived hundreds of life-or-death battles in the world of Titans.
A man who had charged straight into the jaws of death against monstrous beings.
A soldier of the Survey Corps—the last line of humanity's defense.
He didn't know jutsu, didn't have chakra, didn't possess any mystical power.
But…
He had his own way of fighting.
Reflexes, instincts, experience, and pure rage.
---
**A Soldier's Fighting Instinct**
"He's fast… but I've seen faster."
Eren recalled his battles against Titan Shifters—humanoid Titans with overwhelming speed and power.
He had fought the Armored Titan—Reiner, a brute who crushed opponents with sheer strength.
He had battled the Jaw Titan—Porco, a wild beast whose speed was almost untraceable.
He had clashed with the Female Titan—Annie, a fighter who mastered hand-to-hand combat and exploited every opening.
Kakashi…
He wasn't faster than Annie.
He wasn't stronger than Reiner.
But he was precise. He was calculated. He was efficient.
"If this were before… maybe I could do something."
But now, he had no Titan's muscles.
No rapid healing.
Nothing except a worn-out body.
---
**One Last Strike**
Then…
He would use what he had left!
When Kakashi disappeared once more, Eren didn't rush to counterattack.
He listened.
He focused.
Left!
He turned and threw his strongest punch!
WHOOSH!
But Kakashi wasn't there.
Eren felt a shift in the air behind him!
He spun and threw another punch with all his might!
"Hmph."
Kakashi effortlessly tilted his head, dodging with ease.
That punch—it was powerful, but too rough.
"Eren-san has potential, but his technique is sloppy."
Kakashi muttered casually.
---
**Eren's Defeat**
Before Eren could react, Kakashi exploited the opening!
THWACK!
A swift strike to the back of the neck!
Eren's body stiffened!
Before his mind could catch up, he was already collapsing onto the ground!
The night sky spun in his vision.
He struggled to get up, but his body refused to obey.
Less than three moves.
He had been utterly defeated.
Silence.
The three kids stared, wide-eyed.
Gai was speechless.
Obito blinked a few times, then smirked with a teasing chuckle.
"Tch, so Eren-san isn't that strong after all. He's just got the cool look."
A simple remark.
But it dug into Eren like a knife.
He hated this feeling.
Weakness.
Helplessness.
The things he thought he had left behind in that final battle… had resurfaced once again.
Eren clenched his fists so hard his nails dug into his palms.
Satoru sighed, stepping forward.
He sat down next to Eren.
"Hey."
Eren didn't respond.
"How do you feel?"
Still silence.
But this time, Satoru didn't leave.
He simply sat there, waiting.
And after a long moment…
Eren whispered.
"I hate this."
Satoru chuckled softly.
"Then do you want to change?"
Eren tightened his fists.
"I want to be stronger."
He turned to Satoru, for the first time, his eyes burning with determination.
"Teach me how to fight in this world."
---
**Satoru – A Brother?**
Satoru smirked, but internally, he was panicking.
"Am I some kind of teacher now?! What's happening?!"
He scratched his head, hesitating, but looking into Eren's eyes, he couldn't refuse.
Still…
He didn't want to restrict himself to a master-disciple relationship.
He wasn't a mentor.
He wasn't a guide.
"I won't be your sensei."
Eren looked surprised.
Satoru grinned and extended his hand.
"But I will be your brother."
Eren froze.
A brother…
Not a teacher.
Not a commander.
Just two warriors, fighting and growing stronger together.
He stared at Satoru's outstretched hand.
After a moment, he slowly reached out and grasped it.
Beneath the cold moonlight, two men—a full-fledged weeb and a battle-worn warrior from the world of Titans—officially stepped onto the path of brotherhood.
And yet…
Even as he found a new purpose…
Eren's eyes still carried a sorrow too deep to heal.
Because even if he found a new path…
His heart remained empty.