Kang HaJin

Kang HaJin is Kang MiRae’s older brother, the Lightning God clan’s vice-master, and a paladin whose career is defined less by spectacular attacks than by the people he chooses to stand in front of.

Biography

A guardian before the Great Cataclysm

HaJin’s bond with Na YuNa predates the main struggle on Earth. When the two are sent into another world, he treats the unfamiliar environment as a threat even while YuNa approaches it with fearless curiosity. He asks her to distrust everything except him, places himself between her and strangers, and insists on accompanying her when a religious group takes an interest in her. His caution is not empty possessiveness: in a world whose rules equate beauty with social and sacred power, he understands that YuNa’s appearance makes her both influential and vulnerable. (Chapter 371)

YuNa’s aptitude rapidly carries her into the Church of Leytna, while HaJin’s progress is slower. He remains in first class when she has already reached second class, yet continues attending public rites as one of her protecting knights. The comparison troubles him, but he does not withdraw or demand that she slow down. His role settles into a pattern that lasts across worlds: YuNa becomes the radiant center of a group, while HaJin accepts the less visible work of keeping danger away from her. (Chapter 372)

The Lightning God clan’s front line

On Earth, HaJin first appears in full plate beside YuNa during a dungeon crisis. After Yu IlHan saves her, HaJin thanks him but still refuses to remain near an unknown fighter inside a dungeon, gives him contact information, and promises repayment. The decision shows the principle behind his suspicion: gratitude does not cancel his responsibility for YuNa’s safety. His identity card also ties him to MiRae’s organization, establishing him as part of the small family-and-clan structure that later becomes the Lightning God clan. (Chapters 35–41)

As vice-master and holy knight, HaJin stands at the front of the clan’s protective formation. MiRae occupies the center as its high-output mage, YuNa supports her with blessings, and HaJin blocks enemies that break through toward them. He does not try to duplicate their specialties. His sword, shield, armor, and holy power give the formation the time it needs to work, while his quiet judgment helps turn the three exceptional individuals into a functioning unit. (Chapters 66–75)

Meeting IlHan forces HaJin to reassess himself. He initially measures IlHan as a potential rival, but the gap becomes too obvious to preserve that posture. When IlHan bluntly says that HaJin needs better equipment merely to follow MiRae and YuNa, the remark wounds his pride; HaJin nevertheless supplies information about holy materials and accepts the practical value of IlHan’s help. He receives custom holy equipment rather than allowing inferiority to prevent him from becoming a better shield. (Chapters 80–82)

HaJin’s administrative role grows alongside his combat work. He helps coordinate the clan during international emergencies, asks how IlHan’s independent movement should affect allied tactics, and takes charge when MiRae leaves the immediate command structure to prepare magic. His questions are rarely glamorous, but they address the dependencies that decide whether a mixed force can actually fight together. He also takes his turn maintaining a cross-world gate to Breya, showing that his duties extend to logistics and dimensional movement rather than remaining purely martial. (Chapters 109–113 and 164)

Guardian of the holy maiden

HaJin follows YuNa back to Breya as her guardian knight when political pressure around the Church of Leytna becomes open war. He remains near her during negotiations and accepts that her public position makes retreat complicated. When invading forces close on the holy region, the pope concludes that the Church can survive only if YuNa lives and signals HaJin to remove her. HaJin supports that plan not because he discounts the defenders, but because he believes their sacrifice will be meaningless if the holy maiden dies with them. (Chapters 199 and 221–222)

YuNa refuses to abandon the people protecting her. HaJin first tries duty, then force, and finally the one appeal that reaches her: she must live if she wants to see IlHan again. The words break through her despair, but they do not make her flee. When she chooses to stay, HaJin turns back with her rather than treating guardianship as authority over her choices. This is a crucial limit on his protectiveness—he can argue, plead, and shield, but ultimately supports the life YuNa has chosen to lead. (Chapters 222–223)

After the immediate crisis, HaJin continues supporting YuNa’s holy region aboard the fortress. When she synchronizes with the artificial region and its holy power surges out of control, he steps into the flow and absorbs it long enough for her to regain command. The act nearly throws him from the fortress and makes him cry out that he is going to die, demonstrating both his compatibility with holy power and the hard limit of what his body can contain. His protection works through willingness to take the overflow, not immunity to it. (Chapters 226–232)

The last to ascend

HaJin remains with IlHan’s coalition even as its standard of strength becomes increasingly abnormal. He stays behind when operations exceed what anyone below fourth class can survive, trains inside accelerated barriers, and continues advancing while watching MiRae, YuNa, and others enter Dragon’s Nest. His frustration is explicit rather than disguised: at level 270 he is extraordinarily strong by ordinary standards, yet still thirty levels short of the threshold required to become a higher existence through the faction. (Chapters 255–281 and 311)

That gap does not make him abandon the final campaign. IlHan includes him among the force warned that some participants may die against armies composed entirely of higher existences. HaJin enters anyway, carrying the same protective commitment that defined his lower-class career. During Harmageddon he finally reaches fifth class. The achievement is not presented as a sudden secret talent; it is the result of surviving battles and training environments far beyond normal advancement while refusing to leave stronger companions to fight alone. (Chapters 325–330)

A life beyond the battlefield

After the worlds are joined, HaJin admits that becoming a higher existence did not give him a special talent for war. Instead, he applies his caution, organization, and access to a new railway network linking the regions of Earth. The company’s safety, speed, and cooperation with IlHan make it larger than his father’s business, and HaJin becomes its practical leader while IlHan remains a largely nominal co-CEO. His postwar importance therefore comes from building stable connections rather than defeating enemies. (Extra Chapter 2)

His private life carries a less triumphant lesson. HaJin accepts a political marriage and acknowledges to Mystic that he once believed he had an opportunity with YuNa, but waited until she had chosen IlHan. He cannot determine whether she ever saw him as more than MiRae’s brother and her guardian. Rather than turn that regret into resentment, he uses it to advise Mystic to speak honestly before certainty becomes impossible. The conversation shows his final development from a man who always prepared for danger into one who recognizes that excessive caution can itself create loss. (Extra Chapter 2)

Appearance and personality

HaJin is introduced in full plate and normally fights with a sword and shield. A later account describes him as handsome, but the corpus does not establish stable details for his hair, eyes, or build. His visual identity is consequently tied more securely to the armor of a guardian than to a detailed physical portrait. (Chapters 35 and 371)

He is cautious, protective, and practical, with enough pride to feel the gap between himself and the prodigies around him. That pride does not prevent adaptation: he accepts IlHan’s equipment, follows MiRae’s command, and continues training after becoming the group’s conspicuous last-place member. His humor is often self-defensive, but he can also laugh at family tensions and admit his failures without demanding consolation. The same restraint that makes him dependable in a crisis becomes hesitation in love, a flaw he understands clearly only after the war. (Chapters 41, 80, 120, and 311; Extra Chapter 2)

Abilities and classes

HaJin is a paladin and holy knight built for front-line protection. His advancement is persistent rather than explosive: he progresses from a struggling first-class guardian to a fifth-class higher existence while retaining the same sword-and-shield specialization.

Paladin defense and holy power

HaJin’s class combines armored combat with holy power. In the Lightning God formation he occupies the forward position, physically intercepting enemies so that MiRae can cast and YuNa can bless the group. His demonstrated method is defensive and positional: armor lets him remain exposed, his shield receives direct attacks, and his sword gives him a conventional response when monsters close the distance. The corpus does not identify a named signature sword technique or quantify how much damage his holy power adds, so his offense should not be treated as a separate established system. (Chapters 68–75)

His holy affinity also lets him interact directly with sacred power. While YuNa is acquiring control of the fortress’s artificial holy region, HaJin absorbs the turbulent overflow rather than allowing it to tear through the surroundings. The intervention stabilizes time for YuNa, but the force nearly overwhelms him and threatens to throw him from the fortress. Holy power is therefore both his resource and a demonstrated hazard: he can channel or contain it, but not without a limit. (Chapter 232)

Holy equipment

IlHan crafts HaJin’s equipment from material that stores Leytna’s holy power and is suited to paladins. The equipment reinforces a class he already possesses rather than granting that class. HaJin contributes practical knowledge about how the holy stone can be processed, while IlHan supplies the crafting ability that turns it into equipment capable of keeping HaJin relevant beside stronger specialists. No independent ability of the finished weapon is fully described in the corpus, so its precise offensive and defensive options remain unstated. (Chapters 80–82 and 164)

Class progression and fifth-class ascent

HaJin’s growth repeatedly exposes the difference between normal excellence and Dragon’s Nest’s exceptional standards. He remains level 270 when the faction requires level 300 for entry, leaving him unable to undergo the same dragon rebirth as MiRae and YuNa. IlHan consequently treats experience allocation to HaJin as a strategic priority in the next campaign. This limitation is numerical and immediate rather than permanent: HaJin continues fighting until the experience of Harmageddon carries him into fifth class. (Chapters 311 and 325–330)

The corpus later confirms that he is a higher existence, but does not establish a dragon transformation, a new named fifth-class class, or a unique transcendent authority. His latest demonstrated strengths remain durability, holy affinity, and survival in battles against higher existences. (Chapter 330; Extra Chapter 2)

Command and logistics

As vice-master, HaJin helps convert MiRae’s power and YuNa’s support into coordinated action. He takes operational control while MiRae prepares large magic, asks allies for their intended movements before setting tactics, and maintains inter-world gate duties for the clan. These are learned command competencies rather than system-granted combat skills, but they materially shape the group’s effectiveness. (Chapters 109–113 and 164)

After the war, the same competencies support his railway enterprise. HaJin identifies the need for safe travel between newly joined regions and becomes the active head of the resulting company. This is his clearest latest mastery: not a newly revealed attack, but the ability to organize infrastructure at the scale of the fused world. (Extra Chapter 2)

Power progression

Relationships

• Kang MiRae: His younger sister and clan master. HaJin protects her casting position, handles operations beneath her authority, and remains one of the few people comfortable enough to laugh during their family’s political maneuvering.
• Na YuNa: His lifelong friend and the holy maiden he guards across worlds. He respects her final decisions even when they contradict his protective instincts, and later admits that waiting to express his affection left him with an answer he can never obtain.
• Yu IlHan: An ally whom HaJin first measures competitively. IlHan’s overwhelming ability ends that rivalry, equips him, includes him in Dragon’s Nest’s campaigns, and eventually becomes his largely silent business partner.

Items

HaJin uses custom sword, shield, armor, and holy-power equipment made by Yu IlHan, but none has a separate generated item page. The corpus establishes their suitability for a paladin without giving the finished pieces stable individual names or complete properties. (Chapters 80–82 and 164)