You Have Another Sister?

This system... is it legit?

Any normal person, upon hearing that opening line, would probably have this question pop into their head—one that could affect the rest of their life.

As for Sahara Mizu, the one directly involved, he was frantically poking at the system panel like a desperate man grasping at a lifeline.

Thankfully, the system panel before him looked surprisingly normal.

"Personal Info"

"Name: Sahara Mizu"

"Age: 15"

"Talents: Photographic Memory (B), Kekkei Genkai (A)"

"Abilities: Water Release (A), Lightning Release (A+), Fire Release (B), Taijutsu (B+), Genjutsu (A), Fuinjutsu (D+), Ninja Tool Proficiency (C+)"

"Overall Rating: B+"

"Heart Points: 0"

"System Comment: At this age and still this weak, how can you sleep at night?! If you can't turn the entire Ninja World into a puff pastry, the labor-model Raikage and his four generations are about to take turns turning you into one. Do you understand the gravity of the situation?!"

Ignoring that somewhat excessive comment, the rest of the panel was quite concise.

The talents and abilities were easy to understand. If the Overall Rating referred to combat capability, then a "B+" rating probably corresponded to someone like a young Kakashi Hatake or Neji Hyuga from later generations—a new-gen jonin, or perhaps a particularly outstanding Special Jonin. Sahara Mizu had a fairly clear grasp of his own ability range.

If that was the case, then "B" would roughly equal a Special Jonin, and "A" would be on par with a standard Jonin-level combatant?

The only thing worth noting was the "Heart Points."

Sahara Mizu thought for a moment, then tentatively touched that attribute with his mind.

No response.

Clearly, figuring out how to earn these points would have to be done through his own exploration.

When he closed the Personal Info panel, a new option appeared on the previously blank screen.

"Targeted Wishing Pool"

"Available Draws: 1"

Compared to the Personal Info, the explanation for the Wishing Pool was much more detailed.

The contents that could be drawn from this pool were divided into two categories: "Talents" and "Abilities." Before drawing, one could choose a direction from among "Breakthrough," "Survival," "Perception," and "Special," thereby obtaining abilities from any previous film and television works.

The abilities obtained could then be further enhanced by spending "Heart Points."

A fairly game-like setup.

However, aside from the first free draw given as a newbie gift, additional draws could only be obtained by consuming "Heart Knots."

Although Sahara Mizu didn't yet know what exactly "Heart Knots" were, he could still infer some information from the name alone—probably something like resolving the inner needs of people around him, or dealing with troubles they were facing?

Sahara Mizu guessed as much.

But based on his simple first impression of this system, he couldn't shake the feeling that things might not be that straightforward.

"Well, let's just go for one first."

With that complicated mindset of 'life and death are up to fate, wealth and honor depend on heaven,' Sahara Mizu clicked on the draw option.

The first directional choice wasn't hard to decide.

For a fragile person like him, who would die for sure whether he got poked by a Kunai or burned by a Fire Release, nothing was more important than staying alive.

"Direction: Survival"

"Consumed: 1"

"F*CKING PULL IT, GRANDMA!"

Amid System Sister's colorful language and Sahara Mizu's tense, expectant gaze, the blank screen flashed once.

Even the most basic poverty-tier special effects were skipped, and a standard MS Mincho-style Japanese text appeared on the blank screen.

"Ability Obtained"

"Limitless Technique · First Stage · Six Eyes (S)"

"Information Localization: Complete"

"Six Eyes: Possesses 360-degree ultra-long-range vision, capable of sensing Chakra, seeing through Hand Seals, directly tracking/predicting Chakra trajectories, and assisting the user in fine Chakra manipulation, among other abilities."

"Upgrade by consuming Heart Points."

"Oh! Not bad."

"But why is it only part of it?"

Sahara Mizu had just started to exclaim when he saw the ability he'd drawn, but his smile froze halfway.

The "Limitless Technique" from "Jujutsu Kaisen" had the special property of infinitely subdividing the space around the user, preventing any matter from touching their body, thereby achieving an "absolute defense."

It was the signature move of Satoru Gojo 2.5 in the original work, perfectly fitting the survival requirement.

Even in the Naruto World, few ninjutsu could break it. The only two that posed a certain threat were the space-time ninjutsu "Flying Thunder God Technique" and the Mangekyo Sharingan Technique "Kamui."

But if it's only a part...

He still wasn't quite satisfied.

After all, having crossed worlds, who wouldn't want their cheat to be bigger?

Sahara Mizu let out a quiet sigh.

Just as he thought that, the line of text on the panel fully materialized.

Almost in that same instant.

"Hum."

Sahara Mizu's entire brain was flooded with a sudden surge of information.

His thoughts ground to a halt.

If anyone had been standing in front of him, they would have seen his azure pupils abruptly dilate, as if countless tiny stars had been unknowingly sprinkled into them, their divine light awe-inspiring.

In that moment, his vision abruptly pierced through countless obstacles, as if he possessed the Byakugan of the Hyuga Clan, presenting a three-hundred-sixty-degree, no-blind-spot, three-dimensional field of view. It passed through the surrounding walls, bricks, tiles, and cloth curtains, reaching straight out to the far distance several kilometers away.

Everything he saw was rendered in exquisite detail.

The Oden Stall passing by on the distant street, the 50-yen Coin lying in the corner by the utility pole, a training kunai someone had left behind on the training ground, birds nesting in the forest, a fish leaping out of the river at just the right moment, and a female ninja who had padded herself with three layers of clothing to pose as a Giant Confucian.

Even though his brain still clung to reason, the countless sights flooding his vision still gave him a sudden illusion of 'omniscience,' as if he were a god looking down from on high.

Everything his eyes could reach was laid bare.

In that moment, Sahara Mizu actually understood a bit of that baseless arrogance the Hyuga Clan displayed in others' eyes.

--I can see clearly how many moles your wife has on her body, and you dare to oppose me?!

What a bunch of incredible bastards.

But before his vision could expand any further outward.

A sharp, stabbing pain suddenly struck his brain.

Immediately after, his eyes ached as if pierced by needles, went dark, and his field of vision sharply contracted back to normal human range.

"Guh."

Sahara Mizu instantly collapsed to his knees, hands clutching his temples, gasping for air.

Damn it, I got careless.

Though his mind was still groggy and his consciousness not entirely clear, he quickly realized where the problem lay.

The equipment didn't match.

His brain couldn't keep up with the information-gathering ability of the "Six Eyes."

It was like pairing a Pentium 4 CPU (heavily promoted in 2000) with an RTX 4060 Ti running at full power.

If it didn't burn out on the spot, you could count yourself lucky for having enough coolant.

After a long while, the excruciating pain that felt like it was wringing out his brain matter finally began to fade.

But the smile on Sahara Mizu's face couldn't be stopped no matter what.

At any rate, he finally saw hope of escaping this damn life as an undercover agent.

He glanced at his personal panel.

"Overall Rating: A↑"

Just as expected, it had risen from a strong Special Jonin to the average level of a regular Jonin, perhaps even a bit higher.

On the surface, this seemed like just a single step, but in reality, it was a gap many people couldn't cross in a lifetime.

No matter the field, the higher you go, the harder it gets.

A Konoha Jonin is a high-ranking member of the hidden village with the right to vote for the Hokage, and has the authority to temporarily command Anbu members.

If he were in a weaker village like Sunagakure or Amegakure, he could even rival a small portion of those who had earned their own titles.

Sahara Mizu thought this to himself, but his mind grew calmer instead.

I need to earn more "Heart Points."

Just as he was pondering where to start, his ears keenly caught the sound of someone coming up the stairs.

"Onii-san? Did something happen?" Before long, Sahara Yukie's worried voice came from outside the door. "I just heard a 'thump'—are you okay?"

"Mm, I'm fine."

Sahara Mizu was about to brush it off, but then he remembered something and pushed himself up on his weak, sore Legs.

Opening the door, he saw Yukie holding a plate of cut fruit, her pretty face scrunched up with a worried little expression.

"Sorry for making you worry." Seeing her concerned look, Sahara Mizu gave an apologetic smile. "I just overused my Chakra all at once and got a bit drained."

"Onii-san, you need to be more careful!"

Seeing that he was indeed unharmed, Yukie quietly let out a sigh of relief, then sidled past him with the fruit plate, squeezing into his room. But her mouth still scolded him like a little housekeeper: "Practicing a new Ninjutsu at home—if you blow up your room, we won't have the money to fix it, and Onii-san will have to share a bed with me."

The girl set down the fruit plate, turned around, and made clawing motions like a creepy uncle, letting out a mischievous, evil laugh. "And when that happens, even if I make a move on Mizu, it'll all be Onii-san's fault for tempting me into it!"

"No way? We're blood siblings who've depended on each other our whole lives."

"That's exactly why it's better!"

Sahara Yukie spouted her nonsense with a perfectly straight face, her little lips pouted high.

"Thump."

Another knock landed on her little head.

"The third-rate erotic novels you hide under your bed—I really ought to confiscate them sooner or later." Sahara Mizu said slowly and deliberately. "Reading that kind of stuff at your age is still too early for you, after all."

"Huh? H-How do you know?" Miss Yukie's face instantly twisted into a look of terror.

"Onii-san knows everything." Mr. Sahara said smugly.

"Wait a second!"

"I protest! This is domestic violence!"

Sahara Yukie lifted her face angrily, both hands covering her forehead. "And here I was cutting fruit and making you tasty snacks. Mizu, what's up with your eyes?"

Mid-sentence, her voice suddenly paused.

The moment she raised her head, Yukie noticed that her older brother's eyes seemed different from usual—almost as if they were sparkling with light.

But she couldn't quite put her finger on what exactly had changed.

At the same time.

Sahara Mizu was also staring at Yukie's wobbling little head, seriously gazing at the white marker glowing above it.

"Shallow Heart Knot"