Chae Nayun

Chae Nayun is a former Cube cadet, an elite Hero of Essence of the Strait, and one of the world's most powerful swordswomen. She begins the story as a proud archer who is terrified of fighting at close range, even though her true talent and Gift are better suited to a sword. Her gradual decision to face that fear transforms both her fighting style and her sense of self. The same period draws her toward Kim Hajin, whose guidance helps her grow but whose killing of her brother Chae Jinyoon leaves their bond divided between gratitude, love, grief, and anger. (Chapters 2–66 and 124–126)

Nayun remains a front-line fighter through the Tower of Wish, the war against Orden, the Gate of Glory, and Baal's descent. Her enormous magic-power capacity lets her create and sustain magic swords on a scale few humans can match, while her intuition repeatedly identifies paths and dangers that ordinary analysis misses. Those abilities do not make her invulnerable: she can be deceived by sufficiently strong concealment, her largest constructs have vulnerable cores, and committing all of her power to attack can leave her defenses exposed. By the end of the supplied corpus, she is pursuing the corruption behind her family's history while trying to define a future with Hajin that does not deny either what he saved or what he took from her. (Chapters 147–378)

Biography

Cube, archery, and the sword she feared

Nayun enters Cube as one of its most prominent combat cadets. She is competitive with Kim Suho, bristles when he lectures her, and possesses enough raw control and power to make her archery formidable despite weaknesses in theory and technique. Her extra special stat is intuition, but her early identity is built around the bow and the distance it permits. That choice is not simply preference: close combat frightens her, so maintaining range allows her to appear fearless without confronting the form of battle that unsettles her most. (Chapters 2–33)

Her fight with Sven exposes both her courage and the limits of that safety. Sven, driven by a Devil's contract, isolates and attacks her; Nayun survives and defeats him, but she is badly injured in the process. Hajin recognizes that her Gift is specialized for close combat and explains that a sword can act as a conductor for her enormous magic power, turning even a normal blade into an extended magic weapon. His argument irritates her, yet it gives her a practical reason to question the weapon around which she has organized her pride. (Chapters 29–43)

Nayun begins training with a sword in secret, initially treating the experiment as something she cannot admit openly. She cuts her long brown hair to her shoulders during the same period and works through the unfamiliar sensation of channeling magic power into steel. In the final examination, she finally uses the sword against the Butterfly Seedling. Hajin's insistence that she is a born swordswoman helps her act through her fear, while the battle proves that changing weapons is not an abandonment of her strength but the first honest expression of it. (Chapters 43–66)

Guild experience, Jinyoon's death, and Hajin's disappearance

During Cube's guild experience, Nayun joins Essence of the Strait and continues adjusting to close-range combat. Her magic-power reserves vastly exceed those of ordinary Heroes, but drawing out that power is not yet automatic, and fear can still make her freeze when an enemy closes in. At the same time, she becomes increasingly preoccupied with Hajin. She offers him friendship and struggles to understand his deliberate distance, unaware that he already knows the fate of her hospitalized brother and believes that becoming closer will only make the coming harm worse. (Chapters 67–87)

The Recorded Past deepens those attachments. Nayun fights through a prolonged historical ordeal with her companions and receives a time capsule from Hajin before returning to the present. Soon afterward, Chae Jinyoon awakens while carrying a Devil's Seed. When the parasite begins to take his body, Jinyoon suppresses it long enough to accept death, and Hajin destroys both host and seed. Nayun sees only the result: her brother has been murdered, the reason is hidden from her, and the person she had begun to trust refuses to provide the truth that could make the loss intelligible. (Chapters 87–126)

Evidence left by Jain leads Nayun to associate Jinyoon's killer with Hajin. Her suspicion becomes inseparable from the feelings she cannot simply erase, especially when Hajin still protects her during Cube's later disaster and then disappears from her life. She is left with no clean target for grief: Hajin appears to be both her brother's murderer and someone who repeatedly saved her. Over the next three years, she trains relentlessly, becomes a Hero, and searches for him, turning unresolved mourning into the discipline and anger that drive her growth. (Chapters 127–147)

Three years later and the Tower of Wish

Three years after Cube, Nayun is harder, more isolated, and far stronger with a sword. Her reunion with former classmates shows the cost of the intervening years: she has taken up smoking and continues to pursue clues about Hajin rather than accepting his disappearance. When the Tower of Wish opens, she enters under the name Nayunjajangman and encounters Hajin without recognizing him behind the identity Extra7. On the lower floors she purchases the Red Crystal Spear from him, paying heavily for a weapon whose blessing and reach make it useful within the Tower's restricted system. (Chapters 147–168)

Extra7 repeatedly helps Nayun through messages, trades, and timely intervention. Because she does not connect that anonymous player to Hajin, she can judge the help without the weight of Jinyoon's death and gradually develops genuine trust in the person behind the alias. The relationship also reveals that her anger has not destroyed her desire for connection. She keeps the Invitation Letter to the Love Room, a ticket that can summon another player, and considers using it on Extra7, while continuing to advance with the companions from her former life. (Chapters 168–207)

On the Tower's higher floors, Nayun uses Jack Churchill's Claymore and her expanding sword skills against Djinns and other players. When an enemy claims responsibility for her mother's death, she does not surrender judgment to rage. After winning, she prevents an immediate execution and chooses capture and interrogation instead, seeking information rather than the temporary certainty of revenge. The decision marks a change from the girl who could only imagine answering Jinyoon's death by finding and hating one killer: she is learning that the truth behind a death can matter as much as the hand that caused it. (Chapters 207–220)

The Tower's end and the war against Orden

Near the Tower's conclusion, Nayun is confronted with an image of Jinyoon's corpse and the circumstances surrounding his death. She learns that her brother resisted the Devil taking him and that his killer hesitated rather than acting with simple malice. The revelation does not absolve Hajin or remove her grief, but it breaks the version of events in which he killed Jinyoon without reason. She leaves the Tower carrying a more painful possibility: Hajin may have saved Jinyoon from becoming a Devil while accepting that Nayun would hate him for doing it. (Chapters 232–250)

As Orden's monsters threaten humanity, Nayun learns the underlying reason for Jinyoon's death. She is also given an inaccurate explanation that Hajin is a Returner, which seems to account for the knowledge that guided his choices. She fights through the war rather than abandoning her responsibilities to pursue him immediately. In Orden's research center, her intuition helps the group navigate illusions and bewitchment, demonstrating that her value is not limited to destructive force. Her instinct identifies false paths even when the environment is designed to corrupt ordinary perception. (Chapters 250–296)

Nayun activates the Invitation Letter to the Love Room during the operation against Orden, summoning the helper she knew as Extra7. In Orden's throne room, she finally recognizes him as Hajin, joining the anonymous person who aided her in the Tower to the cadet she had pursued for three years. The discovery forces incompatible histories together: the same man killed Jinyoon, guided her toward the sword, protected her, and repeatedly helped her when he could have stayed hidden. She postpones their confrontation until the surviving fighters have escaped Orden's final attack, choosing immediate lives over a private reckoning. (Chapters 296–299)

The Gate of Glory and returning enemies

After Orden's defeat, Nayun continues working as a Hero while new threats emerge around Yi Yeonjun and the Gate of Glory. Her encounters with Jin Sahyuk carry the aggression of old rivalries but increasingly occur within temporary alliances where neither woman can ignore the other's power. In a Gate maze, Nayun's intuition tells her that no conventional exit exists, preventing persistence from becoming blind repetition. Her response is characteristically direct: once she accepts that the apparent route is false, she looks for a way to break the situation rather than waiting for someone else to solve it. (Chapters 301–323)

The recreated world of Baal's first descent places Nayun among fighters whose normal strength and equipment are constrained by the scenario. She continues to function as a front-line Hero while the scattered group searches for allies and a route back to full power. The experience extends a pattern established at Cube and in the Tower: Nayun is most effective when she can trust companions enough to commit herself to the immediate fight. Her directness can create friction, but it also prevents fear, uncertainty, or complicated personal history from paralyzing the group when action is required. (Chapters 317–330)

At the Transnational Peace Conference and in the crisis that follows, Nayun becomes one of the principal defenders against the forces preparing Baal's descent. She protects civilians and fights through extended battles rather than reserving her strength for a single duel. After roughly a day of combat, her intuition recognizes Hajin's gunfire and understands what its arrival means for the battlefield. The recognition is both tactical and personal: despite the years of concealment between them, she knows the pattern of his support well enough to identify him through an attack launched from far beyond ordinary sight. (Chapters 331–344)

Baal's descent, recovered memories, and an unresolved future

During the final war, Nayun fights at the front while Hajin supports the coalition from concealment. She attacks with Balmung's expanding blade and later combines a direct assault with flying swords striking from several directions. Against Baal, she creates a gigantic magic sword, but the Devil can shatter it by striking its concentrated core, showing that scale does not eliminate structural weakness. When Baal's collapsing barrier threatens the world, Nayun uses another enormous magic sword as a support, holding up the contracting sky through a capacity that has grown beyond ordinary human limits. (Chapters 344–364)

Victory does not end Nayun's obligations. She resumes Hero work and is regarded as a likely future Master-rank Hero, but Jin Seyeon gives her evidence connecting corruption in the Hero Association to attacks and assassinations surrounding her family. Nayun confronts her grandfather Chae Joochul and continues questioning Yoo Yeonha rather than allowing family authority to close the matter. This investigation mirrors her earlier change in the Tower: she is still capable of anger, but she now seeks the larger structure behind violence instead of treating a single defeated enemy as the whole answer. (Chapters 365–374)

Hajin's choice to preserve the world erases most records and memories of him, but Nayun eventually remembers. When they reunite, she thanks him for preventing Jinyoon from becoming a Devil, for pushing her toward the sword, and for helping heal her grandfather. Gratitude does not turn the killing into something painless, nor does affection make their relationship ordinary. She refuses to call it simple friendship and tells Hajin that she expects to hate and love him for the rest of her life. By the corpus's end, she is recognized as the youngest Master-rank Hero, while reconciliation means accepting that contradiction rather than pretending it has been solved. (Chapters 375–378)

Appearance and personality

Nayun is repeatedly recognized as a beautiful young woman with an athletic presence suited to a combat cadet and later a front-line Hero. She initially wears her brown hair long enough to reach her chest, then cuts it to shoulder length while beginning her private sword training. Three years after Cube she dyes it black and wears it short, a visible counterpart to the harsher habits and emotional distance she develops while searching for Hajin. The corpus emphasizes these changes in presentation more than fixed measurements or a detailed inventory of facial features. (Chapters 3–58, 147–161)

She is proud, blunt, competitive, and easily provoked, especially when she believes that someone is patronizing her or questioning her ability. Academic study and abstract theory come less naturally to her than physical practice, while intuition and rapid adaptation allow her to perform beyond what her formal knowledge would predict. She is also poor at disguising strong feelings: embarrassment, attraction, suspicion, and anger repeatedly surface through her expression or abrupt speech even when she tries to act indifferent. Those qualities make her emotionally transparent without making her simple. (Chapters 4–66)

Nayun's courage is learned rather than effortless. Her early fear of close combat shapes years of archery, and her switch to the sword matters because it requires her to move toward what frightens her. The same pattern governs her personal life. She spends years pursuing Hajin because uncertainty is more intolerable than a painful answer, yet when she finally learns pieces of the truth, she does not let rage decide every action. Sparing a defeated enemy for interrogation, delaying her confrontation with Hajin during Orden's attack, and investigating her family's corruption all show growing control over her impulsiveness. (Chapters 58–299)

Loyalty and responsibility ultimately outweigh her desire for personal closure. Nayun keeps fighting beside people with whom she has unresolved conflicts, protects civilians during the final crises, and uses her greatest power to hold back Baal's collapsing barrier rather than to claim an individual victory. She can remain abrasive and confrontational, particularly with rivals such as Jin Sahyuk, but repeated disasters teach her how to cooperate without surrendering her judgment. Her final conversation with Hajin is characteristic: she offers neither easy forgiveness nor permanent rejection, only an honest commitment to live with both love and resentment. (Chapters 301–378)

Gifts and abilities

Sea of Magic Power

Nayun's Gift, Sea of Magic Power, gives her an extraordinary reservoir of magic power. Its capacity is several tens of times greater than that of an average Hero and eventually surpasses ordinary human limits. Early in her training, that size is also inconvenient: the reservoir takes a long time to fill, and she cannot normally release all of it efficiently. A sword solves much of the output problem by acting as a conductor, allowing her to pour magic power into a stable weapon rather than forcing it through her body alone. (Chapters 33–69)

At high levels, Nayun can release tremendous power through a blade and maintain constructs that other Heroes could not sustain. She can deliberately stop reinforcing her body and concentrate everything in her sword, producing overwhelming offense at the price of exposing herself. This is a tactical exchange rather than a passive immunity to capacity limits: the Gift supplies the reserve, but she must still decide how much goes into attack, defense, and sustained techniques. Exhaustion, a broken weapon construct, or an enemy who reaches her while she has abandoned reinforcement can still place her in danger. (Chapters 296–297)

Swordsmanship and magic swords

Nayun's natural sword talent exceeds her talent with a bow, but it initially remains inaccessible because she fears close combat. Once she accepts the weapon, her adaptability and magic-power control let her advance rapidly. She can enlarge the effective reach of an ordinary blade with magic power, wield heavy or oversized weapons without depending solely on their physical mass, and eventually fight with several flying swords while attacking directly. Her technique grows through training and repeated combat; the Gift amplifies swordsmanship but does not replace the need to read an opponent or commit to striking range. (Chapters 33–69, 340–359)

Her largest magic swords turn the scale of her reserve into physical control of the battlefield. She uses an immense blade against Baal and later forms one strong enough to prop up the Devil's contracting barrier. These constructs are not indestructible. Baal locates the concentrated core of one giant sword and breaks it, while Yi Yeonjun can stop her surrounding flying swords with psychokinesis. Nayun's progression therefore broadens her reach and options without erasing counters: concealment, superior force, control abilities, and attacks against a construct's core can all limit her. (Chapters 353–363)

Archery and close combat

Nayun's early archery is powered by excellent movement prediction, magic-power capacity, and control, but her technique is overly fixed on upright textbook stances. She lacks some of the theory and monster knowledge needed to adjust for factors such as arrow speed, and her underlying talent with a longsword is greater. Even so, the bow is not evidence of incompetence. It lets her exploit her strengths from a safe distance and makes her one of Cube's best combat cadets; its central limitation is that she chose it partly to avoid the range at which her Gift was strongest. (Chapters 29–43)

The transition to close combat is gradual. Nayun can freeze when a golem forces her into striking distance even after she has begun sword training, and early victories do not instantly remove that fear. Repeated practice teaches her to channel fear into decisive movement, until fighting at the front becomes her normal role. Her later willingness to lower body reinforcement for a maximum-power sword attack shows how completely her relationship to distance changes, but it also preserves the original danger: closing in and committing power always creates risks that an archer at range does not face. (Chapters 58–69, 296–297)

Intuition

Intuition is Nayun's extra special stat and operates as a supernatural sense for danger, direction, and the character of a situation. It supports the movement prediction that strengthens her archery and later helps her lead companions through Orden's illusion-filled research center. In the Gate of Glory, it tells her that a maze has no exit, while in the final war it allows her to recognize Hajin's distant gunfire after a prolonged battle. The ability is most valuable when direct evidence is incomplete, giving her a reliable warning or conclusion that others can then act upon. (Chapters 29–43, 290–340)

It is not omniscience. The Black Lotus Uniform's presence isolation can conceal Hajin even from Nayun's supernatural perception, and intuition does not automatically explain the mechanism behind what she senses. In a deceptive maze, knowing that the visible route is false still leaves the group responsible for finding or making another route. Her instincts also coexist with strong emotions and can be interpreted through them. Intuition provides unusually accurate guidance, but its usefulness depends on whether Nayun recognizes the signal and chooses an effective response. (Chapters 290–309)

Power progression

Relationships

Kim Hajin redirects Nayun from archery toward the sword, protects her at Cube, and becomes the person she most wants to understand. His killing of Chae Jinyoon makes him the focus of her grief, while his refusal to explain turns that grief into years of pursuit. In the Tower, she unknowingly trusts him again as Extra7. Learning that he killed Jinyoon to stop a Devil does not erase the death, but it lets her recognize the protection within his terrible choice. Their final relationship remains deliberately unresolved: she is grateful, attracted, resentful, and unwilling to compress those truths into ordinary friendship. (Chapters 33–378)

Chae Jinyoon is Nayun's beloved older brother and the central wound in her biography. His hospitalization leaves her waiting for his recovery, unaware that a Devil's Seed is preparing to take his body. When he briefly suppresses the Devil and accepts Hajin's fatal shot, Nayun is not present to hear that choice. The later revelation that he resisted possession changes how she understands his death: Jinyoon was not simply taken from her by a murderer, but made a final decision that spared others and prevented his own body from becoming a Devil. (Chapters 67–250)

Yoo Yeonha is Nayun's classmate, friend, guild connection, and frequent source of information. Their friendship survives Nayun's difficult years even when Yeonha knows more about Hajin and the circumstances around him than she can safely disclose. Nayun relies on her networks but does not accept every answer without challenge, especially when the later investigation reaches Chae Joochul and the Hero Association. Their contrasting temperaments—Nayun's directness and Yeonha's strategic caution—create friction while also making them effective complements in crises and investigations. (Chapters 39–374)

Kim Suho and Shin Jonghak are central peers from Nayun's Cube cohort. Suho begins as a rival whose instructive tone irritates her, but his steadiness makes him a trusted companion through the Tower and later wars. Jonghak shares her pride and competitiveness, producing a sharper and more combative familiarity. Both relationships ground Nayun in the group she knew before Jinyoon's death; even after years of isolation, she repeatedly returns to fight beside them when the world's survival matters more than personal estrangement. (Chapters 2–364)

Jin Sahyuk is a rival and intermittent ally whose confrontational manner matches Nayun's own. Their encounters readily become contests of strength, yet repeated shared threats force both to recognize the other's value. Nayun does not need to like Sahyuk in order to coordinate with her, and their hostile exchanges often conceal a practical trust that neither would express gently. The relationship illustrates Nayun's mature approach to conflict: opposition does not prevent cooperation, and cooperation does not require pretending that rivalry has vanished. (Chapters 237–359)

Chae Joochul, Nayun's grandfather, is a source of family authority, protection, and later suspicion. Hajin's help in healing him becomes one of the acts for which Nayun eventually expresses gratitude. Evidence supplied after Baal's defeat, however, leads her to confront him about corruption and violence connected to the Hero Association and her family. She does not permit affection or hierarchy to end the inquiry. Her willingness to question him shows how far she has moved from seeking one obvious enemy toward examining the institutions and family decisions that shaped the tragedies around her. (Chapters 365–378)

Items

• Red Crystal Spear — Nayun buys the Yggdrasil-blessed spear from the disguised Extra7 for 150 TP on the Tower's lower floors. She later offers it to Cheok Jungyeong as an apology, but he refuses to accept it, leaving the spear with her. (Chapters 159–182)
• Jack Churchill's Claymore — Nayun selects the large Tower weapon, infuses it with her enormous magic power while fighting Djinns, and receives it permanently when she leaves the Tower. Its size makes it a strong conductor for her Gift. (Chapters 216–244)
• Invitation Letter to the Love Room — A ticket that can summon another player from Earth or elsewhere in the Tower. Nayun keeps it while wondering whether to call Extra7, then activates it during the Orden operation and summons Hajin. (Chapters 196–297)