Naruto: In the name of time, shock the ninja world!.

"My name is—Uchiha Madara!!"

That domineering, arrogant voice echoed in Hoshikawa Haru's ears long after the man had vanished.

His eyes widened, and his heart began to race.

Uchiha Madara?He hadn't realized it at first—his appearance was a bit different from how he would look decades later. But now it made sense.

Only that man would speak with such confidence.It fit his personality perfectly.

"The Demon of the Ninja World… huh. That day won't be far off," Haru muttered with quiet intensity, a determined fire lighting up his gaze.

Madara's sudden appearance had served as a powerful wake-up call.

The ninja world was cruel, chaotic, and ruthless. Even in a place like Konoha, peace was an illusion—beneath the surface were turbulent currents and hidden dangers.

To survive, power is everything.

He had let himself grow too comfortable. The relative safety of the village had dulled his edge.

Haru stood there for a long moment, deep in thought. Then he let out a quiet chuckle and turned to leave.

But his retreating figure looked different now—he no longer walked with the same lightness. It was as if something heavy had settled on his shoulders.

When he got home, the usually energetic Hoshikawa Haru said nothing. He walked straight to his room without even greeting anyone.

Sakura Kinomoto frowned in confusion."What's wrong with him?"

Hoshikawa Yota shrugged."No idea. He was fine before he went out."

That careless tone earned him a sharp glare. Sakura's hair practically stood on end as frustration and concern welled up in her eyes.

Seeing her reaction, Yota gave an awkward chuckle and quickly got up to check on Haru.

After a knock and a faint "Come in," he entered Haru's room.

There, he saw Haru sitting cross-legged on the floor, intently studying the ninjutsu scroll he had given him.

The boy's focused expression reminded Yota of someone engrossed in a good book—eyes locked in, world forgotten.

Just as Yota was about to speak, Haru spoke first.

"Dad, I'm fine."

"…Alright," Yota replied softly. "Just make sure you don't lose track of time."

Seeing his son's serious expression, Yota didn't want to interrupt. He left quietly after that, gently closing the door behind him.

Silence returned to the room.

Haru turned his attention back to the ninjutsu scroll and began studying it carefully.

Yota was a ninjutsu-type ninja—versatile and skilled. As an elite jonin, he had mastered several high-level techniques, including a few S-rank ones.

Most of the scroll's content was below B-rank, though a few powerful A-rank jutsu were included.

As Haru flipped through the scroll, something caught his eye—and he froze.

His gaze locked onto one specific technique, and his eyes instantly lit up with excitement.

The Flying Thunder God Technique.

He inhaled sharply.

Wait… how does Dad even have this? This is a time-space jutsu.

It was a legendary technique, created by the Second Hokage Tobirama Senju, and later perfected by Minato Namikaze, who used it to dominate entire battlefields.

This wasn't something an elite jonin could just casually hand down—it was a forbidden technique, stored securely in the village's most protected archives.

Even with Yota's status and service record, it shouldn't have been accessible.

Just as Haru was puzzling over this, Yota returned. Seeing Haru's expression, he raised an eyebrow.

"What's the matter? Something you don't understand?"

Still deep in thought, Haru answered absentmindedly.

"I was just wondering why this jutsu is in here…"

Only after speaking did Haru realize he had said it out loud—and looked up to see his father standing there.

Yota smiled, understanding the confusion.

"Don't be so surprised. That scroll was sent by Lord Tobirama himself. He said this jutsu suits you."

Oh… so that's why.Haru nodded slowly, putting the pieces together.

It must've been because of his unique Time-based Kekkei Genkai—Tobirama must've seen the compatibility and had it delivered.

Still…

He really trusts me that much? Haru thought, a little overwhelmed.

The Flying Thunder God Technique wasn't just powerful—it was extraordinarily difficult. Time-space manipulation made its learning curve nearly impossible for most.

Since its creation, only Tobirama and Minato had successfully mastered it in decades.

The failure rate was astronomical.

"By the way, Dad," Haru said suddenly, "can you get me some training weights? I want to build up my body."

While bloodline limits and ninjutsu were vital, the body was still the foundation of all technique.

Most people in the ninja world didn't pay much attention to taijutsu. But Haru knew better—Might Guy, for instance, had nearly kicked reality apart with the Eight Gates.

It proved that taijutsu wasn't weak—it was just overlooked.

Yota scratched his chin thoughtfully."We do have some weights at home, but they're not suited for your age. I'll go out and get something more appropriate."

He figured that the ones in storage were too heavy for a child. Customizing new ones would be safer.

"I want to try them first," Haru insisted. "If they don't work, I'll leave it."

Seeing how determined his son was, Yota nodded and led him to the utility room.

"Alright, give it a try. But don't push too hard."

Yota hefted the weights—they were dense and definitely not meant for a five-year-old. He smiled faintly, knowing full well how stubborn his son could be.

Haru might look calm and composed, but deep down he was stubborn to the core.

Still, Yota couldn't help but feel protective. A ninja's path demanded endurance, but as a father, he hated seeing his child suffer.

Haru picked up the weights. The moment Yota let go, he immediately felt the immense burden.

Heavy.At least one-third of his body weight.

That might not sound like much to an adult—but for a child whose body was still developing, it was crushing.

Strapping on the full set more than doubled his weight. It felt like carrying two full-grown people on his back.

"Forget it, Haru," Yota said, watching his son's flushed face and labored breathing. "This isn't good for your body. You should train gradually."

"I… I'm okay. I know my limits. Don't worry."

Haru's voice was strained. Just speaking took effort now.

Yota's heart ached, but he didn't press further. He sighed, swallowing his concern.

Haru tried to take a step. The weight on his ankles nearly toppled him, but he managed to stay upright—barely.

Every inch forward was agony, but he didn't stop.Didn't complain.Didn't ask for help.

Beads of sweat rolled down his face. The sun beat down on him. His breathing was ragged.

But he kept going.

An hour passed.

Eventually, Haru's movements steadied. His body began adapting, even if just barely. The weight still pressed down on him—but he no longer stumbled.

It was a slow, painful start.

But it was a start.

Yota stood to the side the whole time, watching in silence.

Pride and awe welled up in his chest.This boy…

Talent alone wasn't enough. But with perseverance like this…

With both, there was no doubt: Hoshikawa Haru would grow strong.

And he had just taken his first step on that path.