Fear of MitoUzumaki and Creating Kamehamehaa

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As Arata sighed, he just wanted to go home and sleep. Why? Because night time was when he could finally enter his personal training room.

"Man, academy classes are so boring…" Arata muttered, dragging his feet as he left after Academy Ended .

When he got home and entered the Senju compound, he saw both his mom and dad were there. Even his great-uncle Tobirama was around—but the guy couldn't even meet Arata's eyes.

Arata looked at him with a cold glare. "Look, the traitor is here," he said, loud enough for everyone to hear.

Bonk

"Atta… sorry, Kaccha…" said Arata while Looking at his mother awkwardly, scratching the back of his neck. Arata just sat down and started eating like nothing happened.

Shizuka Senju glanced at Tobirama with a weird look on her face. "What happened, honey? Why did Arata call you a traitor?"

Tobirama leaned closer and whispered, "It's nothing, dear. I just… didn't want to sacrifice myself in Facing Mito-san Warth .

Shizuka nodded, understanding everything without saying much. Even the air in the room felt heavy now.

Suddenly, a cough broke the silence.

Mito coughed.

Both Arata and Tobirama instantly froze. That cough felt like a death sentence. But Hashirama, as usual, didn't get the vibe.

"What happened, honey? Are you okay?" Hashirama asked, confused but genuinely worried.

Mito gave him a gentle smile and shook her head. "No, no, it's nothing, dear. I just… ate a little too fast."

She smiled sweetly at her husband. Meanwhile, both Arata and Tobirama let out a silent sigh of relief.

Shizuka couldn't help but laugh a little. "Pfft… You guys act like Mito-sama is scarier than a Biju."

"She is," Arata and Tobirama thought at the same time.

After dinner, Hashirama stood up.

"I'll be in the study room, Mito," he said, scratching his head. "Got some paperwork to do. You know, Hokage stuff."

Mito nodded with a soft smile. "Sure, honey. Don't work too hard."

Once Hashirama left, Shizuka stood up too. "I'll wash the plates, okay?"

"You don't have to, Shizuka," Mito said quickly. "I'll take care of it."

Shizuka smiled. "No worries. I'm just putting them in the kitchen, that's all."

Mito nodded as Shizuka walked off, carrying everyone's plates. Now only Tobirama and Arata were left sitting there, silently staring at the table.

Mito turned to both of them with a sharp look.

"You two," she said in a calm but deadly voice, "if even one word of what happened tonight gets out, you know what will happen."

Both Arata and Tobirama stiffened and nodded quickly.

"Yes, mother," Arata said, straight like a soldier.

"Yes, Sister Mito," Tobirama added with the fear of death in his voice.

"Good. Now go," Mito said, her tone final.

And they ran—like their lives depended on it.

Tobirama dashed toward his room, hoping his wife would calm him down later. Meanwhile, Arata made it to his own room and closed the door behind him. He looked outside the window.

"It's already night," he muttered with a sigh. "Time for the real training…"

He laid down on his tatami mat and pulled the blanket over his head, just in case someone peeked in.

Then, quietly, he activated an inner silence barrier in the room so no sound could escape. No matter how loud things got, no one outside would hear anything.

He even laced a little chakra into it—just enough to stop anyone from sensing what was going on inside.

"Let's get started," Arata whispered, his eyes glowing slightly under the blanket.

But before all that…

Arata create wooden clone to take his place in bed

"Now,its good,System lets teleport now "Said Arata while Activating His Fuinjutsu he created .

as soft white light covered Arata's body.

In the blink of an eye, his real body vanished.

Back in his room, a wood clone slid under the blanket, shut its eyes, and pretended to sleep like nothing happened.

Meanwhile, Arata appeared in a bright, pure white space.

"So... this is the system training space?" he asked, looking around.

"Yes, of course," the system replied. "It's the space we created together. Think of it like Dragon Ball-style training zones—though not that insane… yet."

Arata raised an eyebrow. "Hmm. So how big is this place, actually?"

"About five times bigger than Konoha," Sesshant said proudly.

"Only five?" Arata sighed. "Not big enough. But I guess it's fine if I'm not going full Otsutsuki."

"Don't worry," the system said, "this place can handle Otsutsuki-level jutsu and chakra output. You won't break it."

"Oh? Nice. What about time dilation?"

"You're gonna like this," the system said with a grin. "Six hours outside equals Two months inside. One full day outside means six months here."

"Ohhh... so we are going full Dragon Ball after all," Arata said, grinning.

"With time, yes. We'll combine jutsu, time-space techniques, and chakra mechanics. It's our own system, after all."

Arata nodded and looked around. "Can you add stuff here? Like buildings, terrain, you know—stuff I can blow up to test my powers?"

"Done."

Suddenly, the empty white space shifted. Four different zones appeared, clearly separated:

A modern city—skyscrapers, roads, streetlights. It looked just like the one from Arata's past life.

A Konoha-style village—traditional wooden buildings, training grounds, forests.

A Suna-style desert zone—sand everywhere, dome houses, hot winds.

And finally, a huge mountain area—with cliffs, caves, and wide open space for large-scale jutsu.

"Sweet. That's exactly what I wanted," Arata said, stretching. "Now, where should we start?"

"Let's begin with your new absorb technique."

"Oh yeah. I had an idea," Arata said, getting serious. "You remember what I said about Sage particles? Like turning microscopic chakra threads into something useful?"

"Yeah?"

"Well," Arata said, rubbing his chin, "what if we made a jutsu that works like Kamehameha? I mean, chakra absorption first… then build it up… then blast it out."

"So you want a jutsu that absorbs power from the surroundings and turns it into one huge, focused blast?"

"Exactly. But it has to be smooth. I need to absorb and charge it while shaping the jutsu. Like a natural flow. Not just standing and waiting like an idiot."

"Hmm… smart. Chakra efficiency, elemental mix, and rapid casting... This'll take serious practice."

"Yeah, that's why this system is perfect. Time dilation, indestructible space, realistic targets—everything we need," Arata said with a smirk.

"Alright, let's call this phase: Project KameNinjutsu."

Arata burst out laughing. "Man, that name's terrible."

"You're the one who started it."

"Yeah, yeah. Let's get to work."