Yoo Soo-ha

Yoo Soo-ha, once known as the Flame Emperor, is the hunter whose regression skill and murder of Kim Gong-ja set the story's current timeline in motion. Three versions of his existence must be kept distinct: the future Flame Emperor whose timeline Gong-ja erased, the twenty-one-year-old Yoo Soo-ha whom Gong-ja killed before his awakening, and the later summoned memory-pattern that receives a newly created body and begins a second life.

Biography

The Flame Emperor in the erased future

In the first future shown by the corpus, Yoo Soo-ha rises from an F-class hunter to the world's first-ranked climber. He clears the tenth floor, repeatedly defeats bosses alone, and reaches the fortieth floor, presenting himself to the public as a blunt self-made hero who claims that people destined to succeed will simply succeed. His achievements inspire Gong-ja's obsessive envy, while his contemptuous interviews and threats reveal that Yoo regards his own success as proof that other people should not obstruct him. (Chapter 1)

The hidden cause of that ascent is Returner's Clockwork Watch. Before becoming the Flame Emperor, the F-class Yoo happens to catch the Lady Who Walks Through the Mirage during one of her Golden Goblin events and receives the EX-rank regression skill. He uses foreknowledge for material and strategic advantage, including winning the lottery, and accumulates retained memories and abilities across deaths. His public explanation of success is therefore literally inadequate: the decisive opportunity was a chance encounter he could neither explain credibly nor reproduce for an admirer. (Chapters 5, 193–194)

Regression also intensifies Yoo's suspicion and willingness to eliminate threats. After the Saintess poisons him in one iteration, he returns one day, poisons her first, bluffs that he has lie detection, and forces her to identify the Black Dragon Witch as the person behind the attempt. He then burns the Saintess to death and destroys her remains. The corpus later raises the possibility that Patricia and Yoo also cooperated against Marcus Calenberry, but Gong-ja presents that conclusion as an inference rather than an established account. (Chapters 2–3, 230, and 332)

Gong-ja accidentally witnesses the Saintess's murder. Yoo severs his legs, burns them, interrogates him despite recognizing that the witness may be innocent, and kills him solely because Gong-ja knows his identity. That murder activates Gong-ja's copying skill, transfers a copy of Returner's Clockwork Watch, and sends Gong-ja back twenty-four hours. Yoo's attempt to erase one witness therefore creates the only regressor able and motivated to erase the Flame Emperor's entire future. (Chapters 2–3)

Death before the awakening

Gong-ja concludes that killing the first-ranked Flame Emperor in the present is impossible because Yoo would regress, learn from the attempt, and imprison or eliminate him. He therefore dies thousands of times, moving backward one day per death until he reaches a date before Yoo received the Golden Goblin reward. Those regressions erase the newspapers, rankings, relationships, and floor clears that constituted the Flame Emperor's public life. The thirty-two-year-old ranker is not transported into the new past; his completed career becomes an overwritten future remembered chiefly by Gong-ja. (Chapters 3–5)

The Yoo Soo-ha Gong-ja meets there is twenty-one, F-class, and has not yet acquired the regression or fire skills that made his future identity possible. Gong-ja studies his schedule across repeated days and lures him to an isolated hunting ground while pretending to be an injured novice. Yoo offers a potion only after demanding all of the stranger's money, takes the money, withholds the promised treatment, and draws a blade because leaving a witness alive might create future trouble. His conduct shows continuity with the later Flame Emperor's selfishness even without the power or fame that amplified it. (Chapter 5)

Gong-ja kills him before the date of his Golden Goblin encounter. This death is final for Yoo's original body because he does not yet possess Returner's Clockwork Watch. He never reaches E class in the surviving timeline and never personally lives the celebrated career shown in Chapter 1. Gong-ja leaves the corpse to be consumed by meadow wolves and buries his bloodied clothes; he does not copy another skill from Yoo in this confrontation because Yoo does not kill him. The Clockwork Watch Gong-ja already copied in the erased future remains with Gong-ja, but this does not retroactively grant it to the dead twenty-one-year-old. (Chapters 5–9 and 201)

A posthumous enemy and summoned memory

Yoo nevertheless remains central to Gong-ja's identity. Gong-ja uses remembered interviews as an incomplete strategy guide through the floors the Flame Emperor once cleared, measures his cooperative choices against Yoo's solitary rule, and teaches the goblin performers a Fire Play in which the Flame Emperor embodies narcissism, contempt, and predation. These later appearances are memories, myths, actors, dream forms, or hypothetical histories—not evidence that the erased first-ranked hunter secretly survived. (Chapters 10–59, 153–188, and 198)

Hundred Ghosts Reincarnation later lets Gong-ja summon people he personally killed with their memories and appearances preserved, but without the abilities they had while alive. The Yoo Soo-ha it produces is consequently the F-class man killed before awakening, not the older Flame Emperor restored with eleven years of regressions. As a summoned ghost, Yoo works at Cafe Planetarium, curses Gong-ja, and participates in operations when called, while explicitly complaining that he never even reached E class during his life. (Chapter 201)

The distinction becomes explicit during the Tower Master's trauma. The skill description calls a Hundred Ghost a dead summoning rather than a returned life: a puppet-like manifestation with the person's memories and appearance. Gong-ja combines that stored memory-pattern with The Earth Bone Dragon's Skull, which can form a body from archived memories. This gives Yoo a new living body and continuity from the summoned self, but it does not undo the original killing or recreate the unrecorded experiences of the erased thirty-two-year-old Flame Emperor. (Chapters 231 and 362)

A second life in the Tower

In his recreated body, Yoo is released from Gong-ja's summoning authority and begins making an ordinary life. He works shifts at Cafe Planetarium and trains as a junior disciple of Chen Mu-mun, a position Gong-ja arranges for him. The training is physically demanding and his speech remains abrasive, but he now has employment, seniors, and a martial institution rather than the solitary shortcut that made the erased Flame Emperor. (Chapters 356–357)

When the Wand of Ages selects him to judge Gong-ja on the seventy-sixth floor, Yoo initially uses the position to demand repayment for the humiliating dances and summons Gong-ja once forced on him. Their argument exposes his continuing resentment: Gong-ja may have given him a body, but Gong-ja also killed the original and controlled the summoned form. Yoo's second life is therefore not gratitude imposed by resurrection, and the power to recreate him does not cancel the wrongs between them. (Chapters 356–357)

Gong-ja successfully objects to the heaven assigned through Yoo. He argues that Yoo would never accept an afterlife that removed his existing body, memories, and continuity; if he could not preserve them, no replacement world would satisfy him. After the judgment is annulled, Gong-ja voluntarily performs the dance Yoo had demanded and tells him that making the world slightly more bearable is reason enough. Yoo does not become gentle, but their relationship moves from ownership and revenge toward a hostile familiarity in which each recognizes what the other actually values. (Chapters 357–358 and 364)

The recreated Yoo continues working and training after that encounter. He leads more senior Chen Mu-mun disciples back to their castle, brings food and invitations between the martial elders, and complains while keeping the group's routine moving. By the late stages, he is an active junior member rather than the emperor of the erased future. Gong-ja explicitly includes him among the people whose lives prove they were not “born wrong,” recognizing the second life without pretending that its subject has become a different temperament. (Chapters 387–389)

By the end of the supplied corpus, the original Yoo Soo-ha remains dead, while this recreated memory-continuation is alive in its own body. He retains the pre-awakening Yoo's name, appearance, memories, and responsibility for the choices that memory-pattern contains, plus experiences accumulated after his summoning and embodiment. The corpus does not establish that he has regained the Flame Emperor's old rank, fire skill, or Returner's Clockwork Watch. (Chapters 356–389)

Appearance and personality

Yoo is a handsome Korean man with dark hair tied in a ponytail, sharp prominent eyebrows, and an expressive scowl. The older Flame Emperor appears polished enough to command cameras while remaining visibly impatient with reporters. His younger and recreated forms retain the ponytail and recognizable face; in the late chapters he is commonly seen in a Cafe Planetarium work uniform or a Chen Mu-mun martial outfit, sometimes with the hood pulled down over his head. (Chapters 1–5, 201, 356, and 387)

In the erased future, Yoo is narcissistic, suspicious, domineering, and convinced that his special success places him above ordinary people. He bluffs effectively, remembers threats, and acts preemptively, but his security is built on removing anyone who might inconvenience him. His behavior toward the Saintess and Gong-ja combines tactical intelligence with cruelty: he can correctly infer danger while still choosing disproportionate punishment and treating innocent lives as disposable. (Chapters 1–3)

The pre-awakening Yoo shows the same greed and self-protective violence on a smaller scale. The recreated Yoo likewise remains profane, irritable, vain, and eager to return humiliation when given leverage. What changes is his social position and daily practice rather than an unexplained replacement of personality. Work at the cafe, submission to Chen Mu-mun's training, and responsibility for fellow disciples put him in relationships where he must continue living after an argument instead of burning every obstacle away. (Chapters 5, 201, 356–364, and 387–389)

Abilities and skills

Yoo's documented abilities belong to different continuities. Returner's Clockwork Watch and the unnamed fire power are demonstrated by the erased future Flame Emperor. The Yoo killed in the surviving timeline had not acquired them, and the recreated Yoo is not shown recovering them.

Returner's Clockwork Watch

Returner's Clockwork Watch is an EX-rank passive skill that activates automatically upon death. It returns its user to the moment twenty-four hours before the death while preserving memories and abilities. The skill therefore turns a lethal failure into foreknowledge and lets retained development accumulate across repeated days. It does not choose an arbitrary return date; movement across years requires one death and one day at a time. (Chapters 3–6 and 209)

The card warns that its penalty increases with the hunter's rank. Gong-ja experiences no penalty while F-class, but the supplied corpus does not specify the exact penalty Yoo paid at later ranks. The skill's later revealed design treats death as its activation trap and another person's life as a labyrinth encountered through trauma. Those deeper mechanics are explained after Yoo's death and should not be mistaken for knowledge the Flame Emperor is shown consciously possessing. (Chapters 4, 6, 209, and 330)

The Lady Who Walks Through the Mirage distributes the skill through her Golden Goblin event, but she is not its sole creator. She acts as producer; Mutia, whose domain is regression, permits a return of no more than one day on the condition of a strong penalty; and the Eye Living in the Labyrinth proposes automatic activation on death and the labyrinthine trauma component. Other powers may also have contributed, but the corpus does not identify them. (Chapters 193–194 and 330)

Yoo uses the skill pragmatically. He exploits known lottery results, converts failed confrontations into advance warning, and preempts the Saintess after learning how she will poison him. Retained memories and abilities help explain the combat experience behind his solo ascent. The same mechanism has a strategic weakness: an opponent who reaches a date before he receives it can kill him permanently, which is exactly how Gong-ja removes him from the surviving timeline. (Chapters 2–5)

The recreated Yoo is not demonstrated to possess Returner's Clockwork Watch. The skill card copied from him belongs to Gong-ja, while the body created later inherits the stored memories of the pre-awakening Yoo and his summoned continuation. Calling the recreated cafe worker a regressor would therefore confuse historical identity with current mechanics. (Chapters 6, 201, 231, and 356–362)

Unnamed fire ability

The erased Flame Emperor controls an unidentified fire skill powerful enough to ignite a person at contact, spread flame across the body, incinerate flesh and bone, project a disabling attack at a fleeing target, and create a large demonic fire used to destroy evidence. He can stand inside or direct his own flames without suffering the effects shown on his victims. These applications justify his public alias, but the supplied chapters do not give the skill's formal name, rank, activation cost, temperature, or complete defensive properties. (Chapters 2–4)

Gong-ja later speculates that the Phoenix may have bestowed Yoo's flame skill, but he states it as a possibility during a confrontation rather than a confirmed origin. The fire ability is distinct from Returner's Clockwork Watch and was acquired separately. The supplied chapters do not establish when or how the Flame Emperor first obtained it. Gong-ja does not copy it when he kills the younger Yoo, since his copying skill activates only when another person kills him, and the later recreated body does not demonstrate this power. (Chapters 5–9 and 335)

Regression-informed combat and planning

The future Yoo's strongest advantage is the interaction between combat experience and retained time. He can learn that an ambush, poison, or boss tactic exists by dying, return before it happens, and prepare a counter while keeping earlier gains. This supports his rapid solo clears and lets him present foreknowledge as instinct or superior intelligence. His bluff against the Saintess shows that he can combine true information from a failed timeline with fabricated abilities to force an opponent into revealing more. (Chapters 1–3)

Regression does not make every conclusion correct or every response proportionate. Yoo identifies the Saintess's attempt but still relies on coercion to name the person behind it, and his certainty about hidden enemies makes innocent witnesses look expendable. Nor does the skill prevent confinement or an attack before acquisition. Its effectiveness depends on the user surviving with enough freedom to act on the returned information. (Chapters 2–5)

Recreated body and martial training

The later Yoo's body is produced through the interaction of Hundred Ghosts Reincarnation and The Earth Bone Dragon's Skull. The first preserves a dead person's memory-pattern and appearance; the second gives that pattern a living body capable of accumulating new experiences. This body frees Yoo from existing only as Gong-ja's summon, but it does not itself restore abilities absent from the stored pre-awakening memories. (Chapters 231, 356, and 362)

Gong-ja places him under Chen Mu-mun for martial training. By the higher floors Yoo is a recognized junior disciple who can lead senior members through routine operations, but no named sword form, aura technique, hunter rank, or combat victory is established for him. His latest capability is therefore best described as active training and organizational participation rather than a return to Flame Emperor-level power. (Chapters 356–357 and 387–389)

Power progression

Relationships

• Kim Gong-ja: Admirer, victim, killer, summoner, and eventually the person who gives Yoo's memory-pattern a new body. Their relationship cannot be reduced to friendship or forgiveness: each killed the other in a different timeline, Gong-ja controlled Yoo's summoned form, and their later hostile familiarity develops only after Yoo gains an independent life.
• Patricia: The Saintess who poisons the future Flame Emperor in one iteration. Yoo regresses, attacks first, coerces her into identifying a sponsor, and burns her to death. This erased conflict is not the romantic relationship rumored by the public.
• The Lady Who Walks Through the Mirage: The pillar whose random Golden Goblin event gives the young Yoo his regression skill in the erased future. Her intervention enables both his ascent and the chain of deaths that eventually creates Gong-ja's current path.
• Ja Soo-jung: The Tower Master's powerless identity. Her Earth Bone Dragon skill supplies the body-making mechanism Gong-ja combines with Hundred Ghosts Reincarnation, making Yoo's independent second life possible even though she does not restore the original body directly.
• Chen Mu-mun: The guild master under whom the recreated Yoo trains. Chen Mu-mun gives him a demanding martial structure and a place among other disciples rather than the isolated supremacy associated with the Flame Emperor.

Items

Yoo has no individually documented personal item in the supplied corpus. Despite its name, Returner's Clockwork Watch is a skill card rather than a physical watch. The recreated Yoo's cafe uniform, martial outfit, and ordinary weapons are not established as unique named possessions.