The Story Begins

Throughout the long history of the shinobi world, the name Senju had once thundered across the Five Great Nations.

The Forest of Senju, alongside the Uchiha, were known as the twin heroes of the shinobi world. With the "Will of Fire" as their creed and unrivaled strength, they pacified the warring era and ushered in the age of one country, one village. Yet prosperity inevitably declined. Over the following decades, the Senju clan scattered and withered like falling cherry blossoms. Some died on the battlefield, some concealed their names and identities, and some blended into Konoha's ordinary streets and alleys, leaving no trace behind.

By now, the name had nearly become a legend.

But legends were only legends. Bloodlines, however, might be hidden away in some unknown corner.

Senju Yunju was that corner.

He did not know who his parents were, which war they had died in, or even what the two words "Senju" meant. He only remembered that when he was very young, he lived in a ruined village, surviving on wild vegetables and charity. That winter had been especially cold. Curled up inside a drafty house, feverish to the point of delirium, he had not even possessed the strength to cry.

Orochimaru found him.

No, more precisely, one of Orochimaru's bases happened to be conducting experiments in that area, and a subordinate found the dying orphan on the outskirts of the village. For some reason that even Orochimaru himself had not cared much about at the time—perhaps the experiments needed more "materials," or perhaps it had simply been convenient—Yunju was brought back to the base.

At first, he was merely a number.

One of Orochimaru's many "collectibles," tossed into a corner of the base. Someone regularly brought him food and water, occasionally drew a vial of blood, or subjected him to some painless examination. The young Yunju did not know what any of it meant. He only knew that it was warmer than the wind and snow outside, that there was food to eat, and that no wild beasts would carry him away.

For a five-year-old child, that was enough.

Over the following months, the researchers at the base were astonished to discover that the child's chakra reserves were growing at a tremendous rate, far surpassing those of children his age. They reported the data to Orochimaru, who looked through the child's file seriously for the first time.

Senju. Where had this surname come from? Orochimaru sent people to investigate. There were no survivors left in that ruined village, but remnants of genealogical records and blood sample analysis pointed to a startling conclusion—the blood of the Senju clan truly flowed through this child's veins.

Though he was not pure-blooded, he was valuable enough to be rare.

Orochimaru did something that surprised everyone: he began personally teaching the child.

Not as an experiment, but as a—container.

Yunju's talent far exceeded expectations. He possessed chakra affinities for all five elements. Though he could not bring them out when he was young, his ability to learn was astonishing. Orochimaru taught him how to refine chakra, and he mastered it in three days. He taught him the three basic techniques—Clone Jutsu, Transformation Jutsu, and Substitution Jutsu—and Yunju learned them all in less than a month. Their power was limited, but their precision and stability far surpassed those of his peers.

"What an interesting child." Orochimaru licked his lips, his golden snake eyes reflecting Yunju's figure as he practiced earnestly.

However, as time passed, Orochimaru's attention began to shift.

He discovered Kimimaro of the Kaguya Clan, that perfect body possessing the Dead Bone Pulse, a one-of-a-kind bloodline limit, with combat power unmatched among his peers. Kimimaro was kept by Orochimaru's side and lavished with resources, becoming the leader of the Sound Five and Orochimaru's most valued container candidate.

What about Yunju?

He had no bloodline limit. Though Senju blood was rare, it did not possess the uniquely overwhelming combat ability of the Sharingan or the Dead Bone Pulse. Vast chakra reserves and potential in all five elements were certainly enticing, but they required time to be realized. How strong could a ten-year-old child become, no matter how much chakra he had?

Orochimaru downgraded Yunju from a "core container candidate" to "long-term stock."

In other words: there was no rush to use him. Let him stay for now and wait until he grew up.

Yunju was placed in a hidden base in the Land of Rice Fields. Dedicated personnel watched over him and regularly provided training resources and supplies, but Orochimaru's personal instruction went from once a week to once a month, then once every few months, until it was nearly nonexistent.

This was the "freezing period."

During this neglected time, Yunju did not remain idle.

Using the limited materials in the base and his near-photographic learning ability, he began training on his own. He learned Water Release: Water Prison Jutsu, which could trap an enemy inside a sphere of water, restricting their movements while forcing them to surrender through suffocation. He learned Wind Release: Wind Blade, condensing chakra into sharp blades of wind to cut targets from afar. He also developed a Lightning Release technique on his own—he named it "Lightning Release: Flash." Its principle was simple and crude: gather lightning-nature chakra in his palm, then unleash an intense flash of light in an instant to temporarily blind the target.

The technique caused no direct damage, but in actual combat, it could often turn the tide of battle.

When his self-created technique was reported to Orochimaru, Orochimaru merely said, "You've improved," and never mentioned it again.

Because that year, Orochimaru met Itachi Uchiha.

Those Sharingan, those eyes capable of wielding the Mangekyō Sharingan and casting Tsukuyomi and Amaterasu, utterly captivated Orochimaru. Compared to the Sharingan, the potential of the Senju clan seemed so "ordinary." Orochimaru began devoting all his energy to researching how to obtain the Sharingan. His regard for Kimimaro did not diminish, but his attention toward Yunju was almost completely cut off.

"There's no need to report that child's data regularly anymore," Orochimaru told his subordinates. "Keep raising him. We'll discuss it later."

And so Yunju was shelved.

But he did not resent it.

He did not even know about the "container" plan—at least, not at the time.

He only knew that Orochimaru had picked him up from that winter, given him food, shelter, and strength. That man taught him ninjutsu and taught him how to read. Though his tone was always cold and sinister, he occasionally revealed a kind of... indescribable "interest."

Yunju had once secretly sworn that he would repay Orochimaru one day.

That had been his most genuine thought in his youth.

Until one day, when he accidentally overheard a conversation between Orochimaru and a pharmacist.

"That child's physical data has stabilized, and his soul compatibility is within an acceptable range. Though he cannot compare with Kimimaro, he qualifies as a backup container."

"But Lord Orochimaru seems more focused on the Sharingan's progress lately..."

"Leave him for now. He won't get away in ten years or even eight. A Senju constitution doesn't die that easily."

Yunju stood motionless in the shadows outside the door.

His hand trembled slightly, not out of fear, but because something he had always believed did not exist suddenly cracked open within his heart.

That was the truth.

From then on, Yunju remained outwardly respectful. He even took the initiative to report his training progress to Orochimaru, his eyes filled with "gratitude." But in his heart, he was already planning something else.

Escape.

Not now, not immediately. He was too weak. He could not even defeat the guards at this base. He needed to become stronger, gather intelligence, and find the right opportunity.

Until then, he needed to play his role well: a grateful, devoted "excellent reserve."

Three days before the Chunin Exams.

A certain underground base in the Land of Rice Fields.

The damp air was permeated with the bitter scent of medicine, and tightly sealed iron doors lined both sides of the dim corridor. Yunju emerged from the training room, sweat still beading on his forehead and his breathing slightly hurried. He had just completed the day's taijutsu training.

The fifteen-year-old Senju Yunju had shed the childishness of his youth. Tall and slender, he had refined features, with short dark brown hair partially covering his left eye. He wore a dark shirt and long pants in the style of the Sound ninja, with protective gear strapped around his arms. He did not look much different from the other Sound ninja.

But those eyes were different.

There was no fanaticism in them, no loyalty—only a restrained, controlled calm. As if he were waiting for something.

"Yunju."

A somewhat weak but steady voice came from the end of the corridor.

Yunju looked up and saw a white-haired youth standing there. Kaguya Kimimaro, seventeen years old, leader of the Sound Five, Orochimaru's most trusted confidant and most valued container.

"Senior Kimimaro." Yunju lowered his head slightly, his tone respectful.

Kimimaro walked up to him. There was little emotion in those green eyes. He stood half a head shorter than Yunju, yet his presence was far more imposing. As the person closest to Orochimaru, Kimimaro's status among the Sound ninja was second only to Orochimaru himself.

"Lord Orochimaru asked me to inform you that the mission for the Chunin Exams has been arranged. You will participate as a contestant from the Grass Hidden Village." Kimimaro spoke flatly, as though stating something unimportant.

"Yes, I understand." Yunju nodded.

The two fell silent for a moment.

Kimimaro suddenly spoke, and something subtle entered his tone. "Have you been training those new techniques?"

"Yes, Senior." Yunju admitted it openly. "Water Release and Wind Release combination practice. It's still not very stable."

Kimimaro tilted his head slightly, his gaze lingering on Yunju for several seconds.

"Lord Orochimaru mentioned you recently," he said.

Yunju's heart tightened, but his expression did not change. "Is that so?"

"He said you've improved quickly lately and can be cultivated as combat strength." Kimimaro's tone remained calm, but Yunju could hear what lay beneath it—not the sharpness of jealousy, but something... complicated, almost like territorial instinct.

"You're lucky," Kimimaro continued, lowering his gaze slightly as though looking at his own hands, or perhaps something else. "Lord Orochimaru did not have time for you before. Now he has finally remembered you."

Yunju said nothing.

Kimimaro suddenly raised his head and looked directly into Yunju's eyes. A pure, almost pathological fervor burned in them.

"Lord Orochimaru is the greatest being." Kimimaro's voice was low and certain. "It is your honor that he thinks highly of you. Do not disappoint his expectations."

Yunju met those eyes, and an indescribably complicated emotion rose within him.

Kimimaro was not warning him. He was not threatening him. Kimimaro sincerely believed it. To Kimimaro, Orochimaru was a god, a faith, the entire meaning of being alive.

And what about himself?

Yunju remembered that winter. He remembered what Orochimaru had looked like when he taught him his first ninjutsu. He remembered the oath he had once made.

—But those vows had been built upon a lie.

"Senior is right." Yunju lowered his head slightly, a perfectly appropriate smile appearing on his lips. "I have always been grateful to Lord Orochimaru."

Kimimaro stared at him for two seconds, then suddenly frowned.

"You're lying," he said.

Yunju's heartbeat skipped, but he quickly steadied himself. Raising his head, he showed just the right amount of confusion. "Senior, I don't understand..."

Kimimaro did not press further. He merely said flatly, "Your eyes have changed. When you used to look at Lord Orochimaru, there was light in them. Now there isn't."

Yunju fell silent.

Kimimaro turned around, his back facing Yunju. An indescribable loneliness and... jealousy? colored his voice.

"Lord Orochimaru has been too good to you," Kimimaro said. "He should not waste time on you. You are only an ordinary person without a bloodline limit."

With that, he walked away, his white hair sweeping an arc through the dim corridor.

Yunju remained where he was, watching Kimimaro's back disappear at the end of the corridor.

He let out a long breath.

Kimimaro's instincts were sharp, but fortunately, he had not pursued the matter. Kimimaro's loyalty and fanaticism were both his strength and his blind spot—he could not understand why anyone would want to leave Orochimaru, just as Yunju could not understand why anyone would willingly become a container.

I'm sorry, Senior, Yunju silently said in his heart. But I'm not you. And I don't want to become you.

He turned and returned to his room, beginning to pack his things.

A few days later, he would enter the Chunin Exams venue in Konoha as a contestant from the Grass Hidden Village.

That was the first step of his plan.

And his only chance to escape this cage.