Biyoo

Biyoo is the white-furred dokkaebi born when the soul-Story of the 41st Shin Yoosung reincarnates through the Dokkaebi Egg. That origin is indispensable, but it does not make “Biyoo” a cosmetic alias for the Disaster of Floods. She begins without the former life's immediate memories, develops her own ethics and relationships as Kim Dokja's child and channel manager, becomes the Dokkaebi King of her world-line, and later carries the company's manuscript between worlds with Yoo Joonghyuk.

Biography

A soul survives the forty-first turn

The Shin Yoosung sent backward by the forty-first Yoo Joonghyuk spends thousands of years outside her world-line before arriving as the Disaster of Floods. When that disaster body dies, her Story does not simply vanish: her soul is preserved through the Dokkaebi Egg and chooses reincarnation. Kim Dokja feeds the egg healthy Stories, carries it for warmth, and accepts the system-recognized Story Father of a Dokkaebi. The crying child who emerges recognizes him as a parent before she possesses the memories needed to explain why. (Chapters 107–110 and 211)

In accelerated dokkaebi time, the white soul identifies itself as the forty-first Shin Yoosung and tells Dokja not to apologise because reincarnation was her choice. She warns that she will not remember him immediately; he promises to help and to go through the coming horrors with her. When ordinary time resumes, he names the new manager Biyoo, opening the 73rd Demon Realm's first channel. The scene preserves a former life's pain while giving the newborn a relationship and name that are not dictated by the captain who once sent her away. (Chapter 212)

Learning to operate a channel without becoming the Bureau

Biyoo is born with a dokkaebi's accelerated cognition and streaming instincts, but those instincts are not the same as mature judgment. She quickly issues a useful liberation sub-scenario, relays indirect messages, and restores access to the Dokkaebi Bag. Trouble begins when a wealthy subscriber demands a lethal bounty: pressure to satisfy the paying audience makes her tiny body swell and spark. Dokja does not order the infant to resist alone. He adds his constellation will to hers, and their combined refusal rejects the request. (Chapters 213–214)

That confrontation establishes the ethics of their partnership. Dokja wanted a channel capable of changing the Demon Realm, so he accepts responsibility for teaching its manager rather than treating her as neutral infrastructure. Biyoo grows into someone who can hide sensitive conversations, delay a broadcast, or cry because the companions have asked her to conceal painful news. High-status visitors during Gigantomachia still overload her young body, making growth visible as better decisions rather than effortless control. Her independence from the Bureau gives her room to choose; it does not remove the needs and compulsions of a dokkaebi. (Chapters 247, 330, and 332–334)

The channel is valuable, but Biyoo is not replaceable

An independent dokkaebi channel is valuable enough that a Wenny kidnaps Biyoo, imprisons her in a cage, and plans to turn her into the first Wenny capable of broadcasting. The captor speaks as if acquiring her channel would exhaust her significance. Bihyung, who incubated the egg and calls himself another parent, attempts a rescue despite the Wenny's racial Story countering dokkaebis. The conflict exposes how both Bureau and Wenny systems are tempted to reduce a young operator to access, profit, and species advantage. (Chapters 255–256)

Yoo Joonghyuk arrives and is offered the channel as a bargaining object. He answers that he does not need it, demands “Shin Yoosung” back, and kills the captor before carrying Biyoo safely in his coat pocket. His wording acknowledges the forty-first turn and the revenge promised to lost companions, but the rescue does not return Biyoo to the former captain's ownership. Dokja, Bihyung, and Joonghyuk risk time and Probability because the captive herself matters. That distinction later shapes how Biyoo uses Wenny inheritance: she takes dimensional authority from an exploitative institution and redirects it toward carrying stories, not owning their teller. (Chapters 256–257)

Turning an audience into Probability

By the Final Scenario, Biyoo's channel—later identified as BY-9158—has become a gathering point for constellations across the Star Stream. Han Sooyoung turns that scale into a strategy. At her signal, Biyoo blocks all other broadcast screens, forcing spectators to watch the company's lives through one controlled feed. The blackout reverses the normal relationship between performer and consumer: if the audience wants the story to continue, it must contribute coins and attention on the company's terms rather than merely watch people die. (Chapters 483 and 491–492)

The resulting donations become a huge reserve that Biyoo converts into Probability. She shines like a blue sun, sweats under the load, and cries as delayed contributions arrive; success is a bodily ordeal, not a menu command. The Bureau then restricts her channel through the Giant Story underlying the channel system. Stories leak from her mouth before she falls and Yoo Sangah catches her. Biyoo can redirect the broadcast economy and make its spectators participants, but an independently operated channel still rests on Bureau architecture, and a young manager can be injured by both the audience's scale and the system's retaliation. (Chapters 492–495)

Dokkaebi King and carrier between world-lines

After the main scenario ends, Biyoo appears at enormous hot-air-balloon scale and announces that she is the Dokkaebi King of this world-line. Although the Star Stream is damaged and can supply neither clean message windows nor rewards, she retains enough authority to issue a voluntary sub-scenario recruiting people for the company's group regression. She cannot join that regression herself because Biyoo did not exist at its starting point. Rather than accept permanent separation, she remains behind to study Wenny inheritances and promises that she will find another path across world-lines. (Chapters 528–529)

That promise leads her into the Dark Stratum, where she spends dense stretches of time acquiring the dead Wenny King's dimensional doorway and learning how to use Bureau-linked assets. She eventually rescues the exhausted Yoo Joonghyuk, repairs most of his scattered Story, and supplies a route for the manuscript mission. Nearby worlds can be reached through the doorway; distant ones require a repaired Final Ark, coordinates, and fuel from the Nameless Ones' Stories. Biyoo's title creates access, but it does not erase distance, hounds, fuel, or Probability. (Chapter 549)

Travel finally lets Biyoo complete a promise made before her reincarnation. She tells Joonghyuk that she resented the forty-first captain, yet refuses his apology because neither the person who should apologise nor its intended recipient exists in that old form now. “Shin Yoosung” is a name the Dokkaebi King once had and an old Story connecting the current travelers. Together they establish a real-time network through which remote authors receive the company's manuscript. When system dissolution destroys the Cloud link and drains their Story energy, they return home rather than die in transit. (Chapters 550–551)

Biyoo arrives as a young human-looking girl whom none of the companions recognize until she sighs and says “Bah-aht.” She explains that dissolution has paralysed her shapeshifting. Soon afterward, as the companions' Stories begin speaking again, she unexpectedly becomes a large furball. The transformation accompanies a wider revival of Story activity, but it does not prove that the old Bureau or every channel function is permanently restored. Her last supported state is survival beside the company, after the distribution mission, with powers beginning to answer a new kind of storytelling. (Chapter 551)

Appearance and personality

Biyoo first appears as an extremely small, white-furred dokkaebi. Her back is fluffy, her face wrinkles when she cries, and her hand is small enough for Dokja to enclose while naming her. She commonly floats near companions or settles on a head or shoulder, communicating through variations of “Baat.” Emotion and channel pressure affect the body directly: she swells, trembles, sparks, or loses control of her flight. The mascot-like scale is therefore expressive but physically vulnerable, not merely decorative. (Chapters 211–214)

Her later forms reflect authority and accumulated time. As Dokkaebi King she expands into something like a giant hot-air balloon and uses the intimidating scale to address a frightened public. In the Dark Stratum she can appear as a horned young girl with star-bright eyes and a face that faintly reminds Joonghyuk of Dokja. After system dissolution she returns in a human-girl form without immediately recognizable dokkaebi traits, then changes back into a large furball when Stories revive. No one form cancels the others; shapeshifting is part of her system-mediated kingship. (Chapters 528, 549, and 551)

Biyoo is affectionate, emotionally transparent, and initially easy to overwhelm, but never passive. As a child she cries when separated from Dokja, avoids people when asked to keep cruel secrets, and reacts sharply to abusive dokkaebis. Her developing discretion makes her capable of protecting privacy even when broadcasting would be profitable. The characteristic cry survives into maturity as an intimate identifier, while her later complete speech reveals dry humor, impatience with foolish plans, and the confidence to mock Yoo Joonghyuk's grammar or navigation.

Her oldest memories give her seriousness without turning her into the adult Disaster of Floods again. She can name the resentment and loneliness of thousands of years, yet refuses the emotionally easy fiction that current counterparts can settle every debt incurred by former selves. At the same time, she honors the old promise by traveling with Joonghyuk. This balance—remembering a Story without letting it dictate who must apologize, obey, or suffer now—is the clearest sign of Biyoo's mature identity. (Chapters 549–550)

Abilities, attributes, and stories

Independent channel management

Biyoo manages a channel first named #BI-90594 and later BY-9158. She can transmit indirect messages, open visual and audio panels, block parts or all of a broadcast, manage advertisements and subscriptions, charge fees, issue sub-scenarios, and provide Dokkaebi Bag access. Audience coins and attention can be converted into Probability, allowing the channel to support interventions that direct combat cannot afford. After the main scenario ends, her King authority still lets her issue a damaged but functional voluntary sub-scenario. (Chapters 212–214, 247, 483, 491–492, and 528)

Every function has a cost or dependency. A subscriber's strong desire can exert instinctive pressure on the manager; a sudden influx of powerful constellations or delayed donations can overload her body. Most importantly, her independent channel is still built from the Bureau's Giant Story, so administrators can restrict it. Disconnected world-lines prevent ordinary reception, and the later dissolution sequence removes the Cloud System and wider scenario functions. Biyoo controls a powerful interface, not a private universe exempt from the Star Stream. (Chapters 214, 330, 492–495, and 551)

Reincarnated soul and accelerated cognition

The soul-Story of the forty-first Shin Yoosung gives Biyoo continuity with a life before hatching. It allows recognition of Dokja during the liminal birth moment, eventually restores memories of the old captain and world-line exile, and supplies a perspective measured in thousands of painful years. As a dokkaebi, she also perceives time much faster than ordinary beings, a necessary cognition rate for monitoring many channel events at once. These mechanisms explain both the infant's impossible work and the adult's recovered historical awareness. (Chapters 212 and 550)

Continuity is not equivalence. Biyoo is born without immediate memory, never regains the Disaster of Floods' monstrous body or beast powers, and develops through experiences that the former Shin Yoosung never had. The present Shin Yoosung is another world-line's younger counterpart, not Biyoo's current human form. Likewise, the present Joonghyuk can remember the forty-first turn through Secretive Plotter's transferred Stories without becoming exactly the captain Biyoo resented. Reincarnation preserves history while changing the person who must live after it. (Chapters 211–212, 529, and 550)

Dokkaebi King authority and shapeshifting

As the original world-line's Dokkaebi King, Biyoo has senior authority over surviving Bureau structures and can operate assets such as the Final Ark. Her forms range from infant furball to enormous balloon-like dokkaebi and horned or fully human-looking girl. She can repair a badly damaged traveler with Stories, start a protective sub-scenario, and project the forceful true voice expected of a sovereign broadcaster. The title is specifically tied to her world-line; in the alternate 1865th line, that world's Bihyung independently becomes its Dokkaebi King. (Chapters 528, 541, and 549)

The destroyed Star Stream leaves this kingship incomplete. Her post-ending sub-scenario has corrupted text and no system rewards. Later dissolution paralyses shapeshifting and drains the Story energy that supports travel, forcing her home in a fixed human form. The return to furball shape at the conclusion occurs only when Stories begin speaking again. It is evidence of renewed power, but the corpus ends before establishing whether stable full King authority, the old Bureau, or unrestricted transformations have returned. (Chapters 528 and 551)

Dimensional doorway and manuscript network

In the Dark Stratum, Biyoo acquires the dead Wenny King's dimensional doorway. It can bridge nearby world-lines, while distant travel requires repairing the Final Ark and supplying fuel. She reads coordinates, understands the Ark's Bureau ownership, and helps turn separate publication efforts into a real-time link so that revisions reach authors in the correct sequence. This ability is the culmination of her history: a former disaster sent between worlds becomes the navigator who sends a story without sending a person as a sacrificial weapon. (Chapters 529 and 549–551)

The network is logistical rather than omnipotent. It needs world-line coordinates, a reachable civilization, an author willing and able to publish, a functioning Cloud System, and enormous travel energy. Hounds Chasing After the Abyss remain a danger in the gaps between worlds. When the system dissolves, manuscript updates stop and the pair cannot continue roaming indefinitely. Biyoo nevertheless succeeds in visiting all worlds they can reach and establishes the link before returning, making the mission complete within its physical and narrative limits. (Chapters 549–551)

Power progression

Relationships

• Kim Dokja: The system recognizes him as her parent at hatching, and he accepts both affection and responsibility. He teaches her to resist exploitative viewers, depends on her channel, and repeatedly leaves her with promises of return. Biyoo's final world-line mission is an attempt to make Dokja's scattered reincarnations read the story that might bring him home.

• 41st Shin Yoosung: Her former life and soul-history. The identity supplies memories, trauma, and an old promise, but Biyoo explicitly describes Shin Yoosung as a name she once had; the dokkaebi's current personhood is not exhausted by it.

• Shin Yoosung: The younger Shin Yoosung belongs to the current world-line and follows a separate life with Kim Dokja's Company. Their shared root does not make one a future costume for the other.

• Yoo Joonghyuk: He rescues Biyoo while calling on the forty-first-turn connection, then later becomes her long-term travel companion. She acknowledges her former resentment, rejects an apology between mismatched present selves, and completes the old promise to travel after the scenarios as Biyoo.

• Bihyung: He incubates the egg, claims a parental role, and risks himself against the Wenny who captures her. His own movement from profit-driven streamer to protective manager gives Biyoo a dokkaebi predecessor without making her subordinate to him.

• Han Sooyoung: Han Sooyoung coordinates the channel blackout and writes the manuscript Biyoo later distributes. Their work joins control over what an audience sees with responsibility for what distant readers receive.

• Yoo Sangah: She catches Biyoo after the Bureau restriction and later recognizes the importance of the real-time publication link. Her care often protects the small body when Biyoo's work exceeds its limits.

• Persephone and Hades: As Dokja's adoptive parents, they call Biyoo their littlest granddaughter and welcome her into the Underworld's strange but sincere family structure.

Items

• Dokkaebi Egg: The vessel through which the forty-first Shin Yoosung's soul reincarnates. It hatches after receiving healthy Stories and parental warmth; Biyoo does not continue carrying it.

• Final Ark: A Bureau vessel Biyoo helps repair and operate for the manuscript mission. It still requires coordinates, fuel, and a functioning Story system.

• Wenny King's dimensional doorway: A portal device inherited from the dead Wenny King and carried in a Wenny pouch. It enables nearby world-line jumps and complements, rather than replaces, the Ark.