The Truth of the Caged Bird Seal: Fragment One

Dust danced in the morning light of the archive, like countless tiny prisoners.

Hyuga Xiao knelt on the wooden floor, slowly wiping the edges of the bookshelves with a rag. This was a side archive where the Hyuga Branch House stored ancient texts. Aside from the routine monthly cleaning, almost no one ever came here. The Main House's core collection was kept in another, more imposing building, protected by barriers and guarded by dedicated attendants—but here, there was only dust, moth-eaten scrolls, and forgotten history.

"Hyuga Branch House member Hyuga Xiao, acting on Elder Xiao's orders, is responsible for this month's archive cleaning."

He quietly repeated the instructions he had received that morning to the empty loft, though the corner of his mouth curled into the faintest smile.

The order was real.

But the purpose behind it was something he had secured for himself.

Three days earlier, after Elder Xiao's probing summons, Xiao had not chosen to retreat. Instead, he had approached the steward in charge of the Branch House's miscellaneous affairs and applied for this most neglected task on the grounds of "sharing the Main House's burdens and atoning for his recent unauthorized actions." His reasoning had been impeccable, and his manner earnest and humble—the steward had merely assumed the Branch House boy had been scared witless by the elder and wanted to prove his loyalty through hard work, so he approved it with a casual stroke.

They would never know that this "neglected" position was exactly what Xiao wanted.

As the rag passed over the middle of the third shelf, his movements paused slightly.

His Byakugan activated without a sound.

Pale blue chakra pathways flowed deep within his pupils. The world before him drained of color, becoming sharply defined black-and-white lines and currents of energy. Bookshelves, scrolls, dust—and the faint sealing fluctuations deliberately concealed among ordinary ancient texts.

"Found it."

Xiao set down the rag and formed the simplest possible Release hand seal. Chakra seeped from his fingertips, precisely piercing an inconspicuous indentation in the wood grain along the shelf's side. There was no mechanism, no physical lock—only a cicada-wing-thin membrane of chakra, the most basic anti-snooping barrier set by the Main House.

For ordinary Branch House members, this barrier was more than enough to stop them.

But to Xiao, whose Byakugan purity had risen to 6% and whose mental perception had just been strengthened by the Illusion Talent Fragment, it was like a sheet of rice paper dampened with water.

"Pop."

A rupture so faint it was nearly inaudible.

The moment the barrier vanished, Xiao reached into the depths of the shelf and drew out an ancient beast-hide manuscript. The hide had yellowed and become brittle, its edges marked by insect damage. It was crudely bound with hemp rope. There was no label on its surface, only a single faded character written in the lower-right corner:

Forbidden.

Xiao did not open it immediately.

First, he dipped the rag back into the bucket, wrung it out, and continued wiping the other parts of the shelves. His movements remained steady, his rhythm even, his breathing completely undisturbed. Yet his Byakugan remained active, monitoring the entire archive and the courtyard outside the loft from every angle.

Ten minutes.

Twenty minutes.

Only after confirming that no one was approaching did he sit cross-legged and place the beast-hide manuscript on his lap.

The hemp rope made a faint rubbing sound as he untied it.

The hide unfolded. The ink had bled, and much of the writing was blurred beyond recognition. But the first line at the beginning made Xiao's pupils constrict abruptly—

<Chronicles of Evolution of the Hyuga Main and Branch House System · Fragment Three>

Compiler: Kagami Hyuga (Branch House · Deceased)

Date Compiled: Year 13 of Konoha

Year 13 of Konoha.

That was the final period of the Second Hokage Tobirama Senju's rule, barely more than twenty years after the First Hokage Hashirama Senju founded Konoha.

Xiao's fingers brushed across the blurred ink as he continued reading.

The fragment's contents were intermittent, as if it had been torn apart and later pieced back together. The first half recorded the Hyuga Clan's old system during the Warring States era—there had been a distinction between the Main House and Branch House even then, but Branch House members had not been slaves from birth. If a Branch House child displayed exceptional talent and earned great military achievements, they could rise to the Main House through the "Clan Grand Tournament." Likewise, Main House members who committed serious offenses could be demoted to the Branch House.

"A fluid hierarchy..."

Xiao muttered under his breath, his gaze growing cold.

Then what had turned the Hyuga Clan into what it was now? The Main House born noble, the Branch House born enslaved, marks carved into their foreheads, their lives and deaths beyond their control?

His gaze quickly moved downward.

The middle section of the beast-hide manuscript had been extensively torn away. The remaining passages were abrupt and disjointed:

"...the Uchiha Clan's Sharingan can copy ninjutsu, the Senju Clan's Wood Release can control Tailed Beasts. Though our clan's Byakugan perception is unparalleled, it lacks the power to directly defeat enemies. At the end of the Warring States era, incidents of Byakugan being stolen occurred frequently..."

"...the First Hokage proposed an alliance, founding a village to end the wars. Each clan would contribute part of its secret techniques to jointly establish Konoha's defense system. Our clan contributed the formation diagram for the 'Byakugan Insight Barrier,' the Senju contributed the foundational scrolls for the 'Wood Release Sealing Technique,' and the Uchiha..."

"...however, the First Hokage proposed another measure: to prevent the leakage of each clan's Kekkei Genkai, 'Bloodline seals' should be established. The Senju Clan was willing to use the Wood Release Sealing Technique as a foundation to help our clan improve the 'Caged Bird Seal'..."

At that point, Xiao's breathing stopped for an instant.

The cold wooden floor pressed against his knees. Outside the loft, wind passed through a bamboo tube in the courtyard, producing a soft thunk. But those sensory details became distant. All of his attention focused on that blurred yet piercing line of text in the beast-hide manuscript:

The Senju Clan was willing to use the Wood Release Sealing Technique as a foundation to help our clan improve the Caged Bird Seal.

Improve.

Not create.

That meant the Caged Bird Seal had existed even earlier, but with a different function? Perhaps the Caged Bird Seal of the Warring States era had merely been a technique to mark identity, rather than shackles that controlled life and death?

Xiao forced himself to continue reading.

There were even more torn sections. The following passages were fragmented:

"...the Uchiha clan head strongly opposed it, claiming this seal violated a ninja's free will..."

"...the First Hokage promised that the seal would only be used to prevent Kekkei Genkai from leaking and would never be used for internal oppression..."

"...our clan's Main House council debated for three consecutive days. In the end, Grand Elder Tennin Hyuga made the final decision: accept the improvement. His reasoning: the Uchiha have the Sharingan to protect themselves, the Senju have Wood Release to subdue enemies, but our clan's Byakugan lacks offensive means. If it were seized in large numbers by foreign enemies, the clan would be in grave danger..."

"...in Year 1 of Konoha, the first inscription ceremony for the new 'Caged Bird Seal' was held. Of the three hundred seventy-one Branch House members, fewer than one hundred accepted the seal voluntarily. The Main House used the 'survival of the clan' to pressure the rest, and those who remained..."

Voluntarily.

Xiao stared at those two words and suddenly wanted to laugh.

So the original Caged Bird Seal had even carried the notion of "voluntary." Then what happened later? When did Branch House children become required to bear the mark from birth? When did "voluntary" become "mandatory"?

His fingers tightened slightly, wrinkling the edge of the beast-hide manuscript with fine creases.

Continue.

The final sections of the fragment were written in an even more hurried scrawl, as if the compiler had been writing frantically under extreme pressure:

"...in Year 3 of Konoha, the First Hokage died of illness. The Second Hokage succeeded him, and policy shifted. Control of the Caged Bird Seal was completely monopolized by the Main House. The Branch House protested, but the Second Hokage replied: 'This is an internal matter of the Hyuga Clan. Konoha is not in a position to interfere'..."

"...in Year 8 of Konoha, Branch House member Retsu Hyuga attempted to break the Caged Bird Seal and died in failure. His autopsy report showed a second layer of seal nested deep within the Curse Mark, suspected to be a variant of the Senju Clan's Wood Release Sealing Technique, capable of remotely triggering brain death..."

"...I have investigated in secret and discovered that the Main House regularly exchanges confidential reports with the Hokage Office. Konoha's upper ranks should possess a backup of the complete technique diagram for the Caged Bird Seal. This seal is no longer for defending against external enemies. It is actually..."

The writing stopped abruptly there.

At the end of the final line, several words had been violently scratched out. Yet through the ink that had seeped through the back of the hide, Xiao could barely make out the remaining strokes:

...actually a tool for balancing the Uchiha Clan.

A tool.

The Hyuga Branch House was a tool of the Main House.

And the entire Hyuga Clan was a tool used by Konoha's upper ranks to balance the Uchiha Clan...

The loft was so quiet that he could hear his own heartbeat.

Xiao slowly closed the beast-hide manuscript and tied it up again with the hemp rope. His movements were slow, every step precise as though he were dismantling Explosive Tags. Once it was bound, he did not immediately return it to its original place. Instead, he took a palm-sized blank scroll from his robes and spread it out.

His Byakugan activated once more.

This time, the pale blue chakra pathways deep within his pupils began to tremble at a complex frequency. This was a Byakugan-derived ability he had developed himself after reaching 6% purity—Localized High-Precision X-Ray Vision and Memory Replication.

His gaze locked onto the beast-hide manuscript.

Every word on the manuscript, every shape formed by bled ink, every torn edge, was broken down within his Byakugan vision into countless minute lines and patches of color. That information traveled through his optic nerves into his brain, then was guided by chakra toward his fingertips.

Xiao bit his right thumb, and the blood that seeped out rapidly wrote across the blank scroll.

He was not copying the text.

He was making an imprint.

The blood spread over the scroll, gradually outlining the complete image of the beast-hide manuscript—including its torn gaps, the hasty handwriting of Kagami Hyuga, and the final scratched-out sentence.

Three minutes later, the imprint was complete.

Xiao rolled up the blood scroll and tucked it close to his body. Then he returned the beast-hide manuscript to the depths of the shelf exactly as it had been, formed another hand seal, and restored the thin chakra barrier.

After finishing all that, he stood, picked up the bucket and rag, and continued wiping the other shelves.

His movements remained steady.

His breathing remained even.

But deep in his heart, something cold was growing wildly.

"The Senju Clan participated in its improvement..."

"The Uchiha knew and opposed it..."

"Konoha's upper ranks have a backup..."

"A tool for balancing the Uchiha Clan..."

Fragmented information collided and connected in his mind. It was not enough. These clues were like puzzle pieces scattered across the ground—he could see parts of the picture, but not the full image.

But one point was already clear:

The Caged Bird Seal had never been merely an "internal affair" of the Hyuga Clan.

Its creation, improvement, and entrenchment—at every stage, Konoha's upper ranks had cast their shadow over it. Perhaps the First Hokage Hashirama Senju's original intentions had been good—preventing the leakage of Kekkei Genkai and protecting clan security. But during the reign of the Second Hokage Tobirama Senju, the nature of the Curse Mark had changed.

It had become chains.

Chains that bound the Branch House.

And those holding the other end of those chains were not only the Main House, but also the great figures seated in the Hokage Office, forever preaching the "Will of Fire."

"Heh."

Xiao gave a quiet laugh as the rag passed over the final shelf.

So overthrowing the Main House alone would not be enough to completely break the Caged Bird Seal. Hyuga Hiashi and the Main House elders were merely the obvious guards. The true jailers were hidden in the core of Konoha's power.

And what he intended to do was smash this prison... along with its jailers.

"Ding!"

The system notification sounded in his mind, cold and clear:

[The host has encountered a key clue regarding the 'Origin of the Caged Bird Seal.']

[Hidden mission 'Curse Mark Truth' has been activated.]

[Mission objective: Determine the complete creation process of the Caged Bird Seal, the factions involved, and the current distribution of control rights.]

[Mission reward: Based on the progress of the investigation, gradually unlock 'Caged Bird Seal Removal Progress' (Current removal progress: 0.1%).]

[Warning: This mission concerns Konoha's secret history of its founding. Investigating it may alert the upper ranks. Host, proceed with caution.]

Xiao closed the system interface, picked up the bucket, and turned toward the archive entrance.

The moment he pushed open the wooden door, afternoon sunlight poured in, almost painfully bright. He narrowed his eyes to adjust to the changing light while his Byakugan swept across the courtyard—

No one.

But perched on a bamboo tube in the corner of the courtyard was a black crow.

The crow's eyes were red.

It silently watched Xiao for two seconds, then spread its wings and flew away, vanishing among the buildings of Konoha.

Xiao stood where he was, staring in the direction the crow had disappeared for a long time.

A summoned beast of the Uchiha Clan?

Or... surveillance from Root?

It did not matter.

He picked up the bucket and walked down the steps. His footsteps landed steadily on the stone path. Sunlight stretched his shadow long behind him, casting it over the archive's wooden door.

The door slowly closed, locking the dust, the beast-hide manuscript, and that buried history back into darkness.

But some things, once seen, could never be forgotten.

As Xiao walked back toward the Branch House residential district, the final scratched-out line from the beast-hide manuscript replayed in his mind again and again:

...actually a tool for balancing the Uchiha Clan.

If the Hyuga Clan was a tool for balancing the Uchiha Clan.

Then what were the Uchiha?

Did they know about this?

And if they did, what was their attitude toward it?

For now, those questions had no answers.

But Xiao knew he needed more clues. And the source of those clues might not only be ancient Hyuga texts, but also... the other clans caught up in this same game of chess.

For example, the Uchiha Clan.

For example, the Senju Clan.

"One step at a time."

He muttered to himself and pushed open the low wooden gate of the Branch House compound.

Several Branch House children were practicing the basic stances of the Gentle Fist in the courtyard. When they saw Xiao return, they stopped and bowed respectfully. "Brother Xiao."

Xiao nodded and smiled gently. "Keep practicing."

He entered his room and shut the door.

The gentleness vanished from his face in an instant, becoming an icy calm.

He took out the blood scroll from his robes and spread it across the table. The imprinted image of the beast-hide manuscript glimmered dark red beneath the candlelight. Xiao stared at the final scratched-out line, his fingers unconsciously tapping against the tabletop.

"The Uchiha also know..."

That was another fragment of writing he had glimpsed along the edge of a torn page in the archive. He had not had time to inspect it closely then, but now that he recalled it, those five words were like a thorn embedded deep in his thoughts.

If the Uchiha Clan knew the truth about the Caged Bird Seal.

If the Uchiha Clan knew that the Hyuga Clan was merely a tool Konoha's upper ranks used to balance them.

Then the Uchiha Clan's attitude toward the Hyuga Clan deserved to be reexamined.

It was not simply arrogance and contempt.

It was... the wary vigilance of those suffering the same fate? Or anger at being used?

Xiao closed his eyes and began sorting through the timeline he knew:

At the end of the Warring States era, the First Hokage proposed founding a village, and the clans formed an alliance.

The Caged Bird Seal was "improved" then. The Senju Clan participated, while the Uchiha Clan opposed it.

After Konoha was founded, control of the Caged Bird Seal was monopolized by the Main House, while Konoha's upper ranks held a backup.

Kagami Hyuga of the Branch House compiled this fragment in Year 13 of Konoha, and afterward... he had most likely been silenced.

Then when did the Uchiha Clan begin to distrust Konoha's upper ranks?

Had it begun when the Second Hokage Tobirama Senju established the Ninja Academy and ANBU, gradually weakening the clans' power?

Or had the seeds of betrayal already been planted even earlier, when they discovered that this so-called "alliance" was actually a meticulously calculated game of balance?

Xiao opened his eyes.

Candlelight danced in his pupils.

He suddenly recalled certain details from the original story: the Uchiha Clan's position in Konoha had always been delicate. They possessed one of the strongest Kekkei Genkai, yet they had always been excluded from the core of power. The Second Hokage established the Police Force, ostensibly granting the Uchiha Clan authority, but in reality isolating them within the village's apparatus of violence while monitoring their every move.

And what about the Hyuga Clan?

The Main House enjoyed superficial honor, while the Branch House bore the real burden of enslavement. The Byakugan was hailed as "Leaf Village's strongest eye of insight," but did the Hyuga Clan truly have any say among Konoha's upper ranks?

No.

A guard dog chained in place did not need thoughts.

It only needed obedience.

"I see..."

Xiao slowly let out a breath.

The Caged Bird Seal did not merely bind the Branch House's freedom; it broke the spine of the entire Hyuga Clan. When more than half of a clan's members were born as slaves, that clan could never truly unite, never form a collective will powerful enough to threaten the upper ranks.

The Uchiha Clan, meanwhile, was relatively equal internally, yet isolated, watched, and guarded against by the entire village.

Two different shackles.

The same hand holding the whip.

"What... exquisite statecraft."

Xiao put away the blood scroll and blew out the candle.

The room sank into darkness.

He sat in the dark as the Byakugan's field of vision silently opened, piercing through the walls to observe the Branch House children outside in the courtyard, still practicing the Gentle Fist. Blue Caged Bird Seals were carved onto each of their foreheads.

In the Byakugan's vision, those Curse Marks resembled twisted nets, entwining their chakra pathways, reaching deep into their brains, connected to some distant, unknowable control terminal.

At the other end of that terminal was the Main House.

And behind the Main House... was Konoha.

Xiao closed his eyes.

The system prompt sounded once more, this time carrying a profound resonance:

[Host's understanding of the essence of the 'Caged Bird Seal' has deepened]

['Curse Mark Truth' quest progress: 5%]

[Caged Bird Seal removal level has loosened slightly: 0.1% → 0.3%]

[Hint: Increasing the removal level depends not only on accumulated strength, but also on understanding the Curse Mark's essence. The deeper the understanding, the greater the possibility of breaking it.]

0.3%.

Still negligible.

But it was a beginning.

A beginning of shifting from "passive endurance" to "active deconstruction."

Xiao lay down, resting his head on his arm as he looked at the ceiling.

The road ahead was already clear:

First, continue increasing the Byakugan's purity and accumulating strength.

Second, continue intercepting women blessed with great fortune, obtain Destiny Points, and resist the future Divine Erosion.

Third, secretly investigate the full truth of the Caged Bird Seal—including the Senju Clan's involvement, the extent of the Uchiha Clan's knowledge, and the location of the "backup formula diagram" held by Konoha's upper ranks.

Fourth, at the right time... make contact with the Uchiha Clan.

Not as a member of the Hyuga Branch House.

But as "the gravedigger of the old order."

Outside the window, the night deepened.

The lights of Konoha gradually lit up, appearing from afar like a warm sea of stars. Yet beneath that sea of stars, how many shackles were silently tightening in the darkness? How many fates were being manipulated without a sound? No one knew.

Xiao turned over and closed his eyes.

Before sleep claimed him, his final thought was:

Tomorrow, it was time to visit Kurenai Yuhi.

That girl's fate had already been changed by him, but it was not enough. She needed to become stronger, tougher, more... worthy of becoming a piece in his future plans.

No.

Not a piece.

An anchor.

A Humanity Anchor against Divine Erosion.

And he needed many such anchors.

Enough that, on this road toward becoming a god—or rather, toward slaying gods—he would not lose himself.

"Good night, Konoha."

He murmured.

Then he sank into sleep.

The ancient beast-hide tome in the attic, the imprinted images on the blood scroll, the Raven's red eyes, the blue Curse Marks on the children's foreheads... all these fragments intertwined and reassembled in his dreams, gradually forming a vast, dark tableau.

At the center of that tableau stood a birdcage.

Imprisoned within it was not merely the Hyuga Branch House.

It was the entire Shinobi World.

And what he had to do was...

Smash that cage to pieces.