Erta

Erta, also rendered Ertha in the supplied text, is the angel sent to help Yu IlHan adapt to mana after the Great Cataclysm. Her assignment grows into a working partnership built around magical analysis and formation engineering. When Heaven’s treatment of Earth and its own angels destroys her trust, she uses the Garden of Sunset’s conversion ritual to discard angelhood without joining another faction, then helps build Dragon’s Nest as an independent sixth-class dragon.

Biography

The angel on IlHan’s head

Erta appears on IlHan’s windowsill after humanity returns to Earth. Restrictions on an angel descending into a lower world reduce her to a form small enough to sit on his head, and magic prevents ordinary lower existences from recognizing her. She introduces herself as the angel assigned to help the one human who did not experience the otherworldly adaptation period. Her first task is practical: proximity to her activates the mana already inside IlHan and accelerates his ability to recognize, control, and use it. (Chapters 5–6)

She explains levels, skills, classes, mana, monsters, dungeons, and the limits governing Heaven’s assistance. The work immediately tests her composure because IlHan’s thousand years of preparation have produced physical ability, concealment, crafting instincts, and accumulated experience that do not fit the progression she expects from a level-one human. Erta often reacts with disbelief or sarcasm, but she keeps translating the Akashic Record’s abstractions into rules he can use. (Chapters 5–15)

That role expands when IlHan begins making artifacts beyond ordinary blacksmithing. Erta supplies the angelic knowledge and support needed for Mana Crafting, and she helps connect Heaven’s requirements to his redesign of the Traps of Destruction. IlHan provides the manufacturing insight and impossible results; Erta identifies how mana, formations, and Heaven’s systems must interact for those results to function. Their contrasting expertise turns an assigned tutorial into a genuine partnership. (Chapters 16–32)

Partner through Earth and Dareu

Erta remains with IlHan through dungeon outbreaks, Orochi’s defeat, and the dragon war on Dareu. She cannot simply resolve lower-world crises with angelic force, so her contribution is usually interpretation and enablement: she reads magical structures, warns about forces hidden behind immediate attacks, coordinates Heaven-sanctioned resources, and helps IlHan turn materials into tools suited to the next threat. He regularly ignores conventional limits, but he also asks for and trusts her magical judgment. (Chapters 33–128)

Dareu and the later fortress projects deepen that interdependence. Erta can understand the mana logic behind barriers and artifacts that IlHan builds intuitively, while his inventions give her theories a physical platform. She becomes one of the companions able to challenge his assumptions instead of merely admiring the outcome. At the same time, repeated separation from Heaven’s command makes her increasingly conscious that her most meaningful work happens beside him rather than inside the institution that assigned her. (Chapters 106–182)

Her growing affection is inseparable from a professional insecurity. IlHan advances so quickly that Erta fears becoming an observer he no longer needs, particularly beside stronger angels and exceptionally talented human mages. She therefore wants higher league not only for status but for the ability to keep contributing. By fifth class, the desire to remain at his side is already personal, even when she continues describing her actions through duty and efficiency. (Chapters 121–183)

The promotion Heaven uses as an answer

Erta returns to Heaven when offered advancement to sixth-class high angel. She believes greater power will close the widening gap around IlHan and let her support him more directly. Instead, the timing strands her away from Earth during its third Great Cataclysm, when IlHan and the people she knows are scattered across other worlds. The absence exposes the difference between the purpose she assigns to promotion and Heaven’s purpose in offering it. (Chapters 183 and 191)

She learns that Heaven displaced Earth’s population because it expected the planet’s inhabitants to die during the transition. Her superiors also treat the perspective she acquired beside IlHan as a defect that advancement can correct: a higher league is supposed to make the concerns of lower existences feel remote again. For Erta, that is not enlightenment but erasure of the judgment and relationships she developed through direct experience. (Chapter 191)

Erta refuses to let promotion overwrite those conclusions. The decision leaves her trapped between an organization she no longer trusts and the independent people she cannot yet reach. It also clarifies her motive: she wants power because it can help particular people, not because higher existence automatically makes an institution right. Her eventual departure is therefore the consequence of a long conflict over responsibility, rather than a sudden change of allegiance. (Chapters 191, 250–254)

Escaping between two factions

Erta appears to accept recruitment by the Garden of Sunset, but she does not intend to exchange one divine faction for another. She studies the conversion sequence and exploits the instant between affiliations. The Garden’s ceremony first removes her white wings and angelic record, briefly reducing her to a lower existence; only afterward should its own record enter and recreate her as a gatekeeper. Erta has engraved a formation across her body to seize that interval. (Chapter 251)

The formation uses the remnants of her higher-existence mana and collapsing angelhood as a barrier. It blocks the Garden’s record and reflects the attempted conversion instead of accepting it. The plan leaves her without wings, faction protection, or a stable higher-existence body, but it makes her independent. She explicitly rejects the premise that she must belong to Heaven, the Army of Brilliant Light, the Garden, or any other side merely because those factions claim every higher existence. (Chapter 251)

Erta then converts the mana released by the failed ceremony into an attack. Crystal projectiles multiply into hundreds and thousands, forcing the sixth-class Lisona to devote herself to defense and exposing an opening for the rescue. Erta cannot defeat that enemy alone: the formation is fueled by a one-time institutional collapse, and her league is disappearing. Its success lies in turning an enemy ritual into enough interference for IlHan and his allies to reach her. (Chapters 251–252)

IlHan extracts her as a lower existence. Heaven calls her a traitor, while Erta insists that her care for him was never merely an Angel’s Partner obligation. The confrontation helps end IlHan’s remaining contractual connection to Heaven and separates both of them from the system that once defined their cooperation. She loses the effortless authority of angelhood but keeps her magical knowledge, practiced control, and choice of companions. (Chapters 252–254)

Architect of an independent faction

Free of Heaven, Erta becomes a magical planner for IlHan’s independent force. Her lack of higher-existence league means she cannot meet faction soldiers through raw mana, so she constructs battlefields that let specialists combine their strengths. Against higher existences she maintains several formations at once: defenses against hostile magic, reductions to physical force, restraints on movement, and interference that turns an enemy’s mana against its owner. (Chapter 266)

The system works through interaction rather than solitary dominance. IlHan’s Falling Down strengthens Erta’s formations to more than twice their ordinary effectiveness; bound or disrupted enemies then become targets for Liera’s spear. Erta identifies support magic as her specialty, and the battle demonstrates what that means in practice: she changes the conditions under which stronger combatants exchange attacks, but still needs allies to exploit the openings and protect the caster. (Chapter 266)

She also contributes to infrastructure on a planetary scale. Erta works with Kim YeSeul and Helièna on a formation that controls Earth’s mana, manages altered time, and protects its inhabitants. YeSeul supplies exceptional space-time specialization, Helièna contributes her own magic, and Erta helps calculate and stabilize the broader formula. Later she can summon Earth’s monsters into an accelerated barrier for training, applying her knowledge of both Heaven’s systems and the group’s new formation network. (Chapters 272–276)

These projects reverse her original position. Erta once explained systems that Heaven had already defined; now she helps design the magical order through which an unaffiliated force protects worlds and develops its members. Her angelic experience remains useful, but it is evidence and technique rather than a command structure she must obey. (Chapters 255–276)

Sixth-class dragon and wife

IlHan eventually places Erta in the Cradle of Miracles, rebirthing her into Dragon’s Nest. She becomes a sixth-class dragon for the first time; this is not restoration of a completed high-angel promotion, because she fell before achieving that advancement. The transformation returns higher-existence scale without returning Heaven’s record, allowing her analytical and support role to continue inside a faction built around chosen synchronization with IlHan. (Chapters 309–310)

Erta participates in Dragon’s Nest’s world-scale magical work during and after the faction war. When worlds are fused, she and Helièna support YeSeul’s calculation of the formation from within the Cradle’s interspace. The arrangement again reflects specialization: Erta is an expert contributor to the magic formula, not the sole creator of a process for which YeSeul’s space-time power is central. (Chapters 310–335)

After the conflict, Erta marries IlHan. Peace does not automatically erase her fear of redundancy. She compares her abilities with Kang MiRae’s and worries that a more talented mage covers the same functions, but IlHan answers that their shared history and her particular knowledge cannot be replaced by a ranking of spell power. During their travels she describes her pre-Earth work as the angelic equivalent of a white-collar magical safety job: monitoring mana movements beyond Heaven and preparing for magical accidents. The explanation connects her present specialty to a long professional history that only became personal on Earth. (Chapter 364)

Appearance and personality

Erta first appears as a small winged woman who can stand on a windowsill or sit on IlHan’s head. The size is a descent restriction rather than her natural adult form. Her white wings embody her angelic affiliation until the Garden conversion tears them away. Dragon’s Nest later gives her a sixth-class dragon body and a new factional record instead of restoring those wings as proof of Heaven’s ownership. (Chapters 5–6, 251–254, 309–310)

She is analytical, conscientious, sarcastic, and easily flustered when IlHan treats an impossible result as ordinary. Her explanations favor rules and testable mechanisms, but experience makes her willing to revise those rules when evidence contradicts Heaven’s doctrine. The false conversion shows the most extreme version of that habit: she studies an institutional process closely enough to use its own sequence against it. (Chapters 5–32, 191, 251)

Erta’s confidence in magic coexists with personal insecurity. She compares herself with Liera’s longer bond with IlHan and with Kang MiRae’s specialized talent, sometimes reducing her own value to whichever skill another companion performs better. Her loyalty is steadier than that self-assessment. She gives up angelhood without certainty that she will survive or be accepted by another faction, because remaining neutral would contradict what she has learned beside IlHan. (Chapters 183–254, 364)

Abilities and classes

Erta’s strength is the ability to understand a magical system, express its interactions through formations, and make other combatants more effective. She begins as an angel with privileged knowledge and mana support, retains her technical mastery after becoming a lower existence, and finally reaches sixth class as a Dragon’s Nest dragon. The corpus shows the rebirth restoring scale, but it does not assign her an unrelated catalogue of offensive dragon techniques. (Chapters 5–32, 251–276, 309–310)

Angelic mana support and system knowledge

Erta’s presence activates mana in IlHan after the Great Cataclysm. The mana is already part of him, but proximity to an angel lets him perceive and circulate it, with his recognition, control, and use adapting at an accelerated rate. This is acclimation and instruction, not Erta permanently donating a separate mana pool or granting him an exclusive combat spell. (Chapters 5–6)

As an assigned adviser, she understands levels, classes, skills, dungeon formation, Heaven’s restrictions, and the operation of the Akashic Record. That knowledge lets her explain why an event occurs, identify when IlHan’s growth violates normal expectations, and anticipate institutional responses. It is broad expertise rather than omniscience: IlHan’s concealment and crafting repeatedly produce outcomes she has not seen, and Heaven itself withholds or misrepresents important decisions. (Chapters 5–32, 183–191)

Erta can facilitate Mana Crafting by supplying angelic assistance and translating magical requirements into a form IlHan can manufacture. The improved Traps of Destruction and expanded Cross Bag depend on collaboration with his blacksmithing and materials. Her role enables the mana structure; it does not make her the sole inventor or physical maker of the finished artifacts. (Chapters 16–37, 69)

Magical analysis and formation engineering

Erta reads mana movement and breaks complicated effects into formations that can be adjusted, combined, or countered. Her later account of her angelic work—observing magical movements outside Heaven and preparing for accidents—explains why she is experienced in diagnosis and prevention rather than only direct attack magic. Repeated exposure to IlHan’s artifacts extends that background into new systems that Heaven did not author. (Chapters 33–182, 364)

At planetary scale, she contributes theoretical and formula work to Earth’s protective and time-related formation. The project requires YeSeul’s space-time specialization and Helièna’s contribution alongside Erta’s calculations. Erta can maintain and use functions built into the resulting network, including bringing Earth monsters into an accelerated environment for training, but the collaboration prevents attributing every world-level effect to her personal mana alone. (Chapters 272–276, 335)

The limiting factors are complexity, preparation, and available power. A wide formation must be calculated and stabilized, while a battlefield formation becomes stronger or weaker according to the domain, caster league, and allies sustaining it. Erta’s greatest results therefore occur when she has time to encode a system or when other specialists supply missing force. (Chapters 251, 266, 272–276)

Binding, cancellation, and mana reversal

Erta’s combat support can operate through several simultaneous formations. Demonstrated effects include defending allies from hostile magic, reducing incoming physical force, interrupting enemy movement, binding targets, and disturbing hostile mana until it reverses against its user and produces a berserk state. These effects do not simply erase the league difference; they make a stronger enemy less able to attack or defend coherently. (Chapter 266)

IlHan’s Falling Down more than doubles the formations’ effectiveness in the demonstrated battle. Its environmental suppression and flame belong to IlHan, while Erta’s contribution is the layered magical control operating inside it. Liera then attacks the restrained targets. The sequence establishes a repeatable team application—domain, formation, execution—and a clear limit: without the allied domain or finisher, Erta would face a much harder contest against the same higher existences. (Chapter 266)

Conversion barrier and residual angelhood

For her escape from the Garden of Sunset, Erta engraves a formation directly on her body. It activates after the ritual strips her angelic wings but before the Garden’s record can settle into the emptied vessel. The remains of her higher-existence mana and angelhood become a temporary barrier that rejects and reflects the incoming affiliation. Precise timing is essential; before the stripping she is still bound to Heaven, and after successful conversion the Garden would control the resulting record. (Chapter 251)

The broken ceremony releases mana that Erta crystallizes and multiplies into a large projectile attack. It can force a sixth-class enemy onto full defense and create a rescue opening, but the effect is not presented as an ordinary spell she can reproduce indefinitely. It consumes the exceptional transition energy around her collapsing league. Once IlHan rescues her, she is genuinely a lower existence and must work with the magical realm and knowledge that survive the loss of raw power. (Chapters 251–254)

Dragon rebirth and latest state

The Cradle of Miracles rebirths Erta under Dragon’s Nest and advances her to sixth class for the first time. The new record restores higher-existence capacity without reversing her independent choice or making her an angel again. Her established role after rebirth remains magical calculation and support, now backed by a league suitable for Dragon’s Nest’s faction-scale operations. (Chapters 309–310, 335)

The supplied corpus does not isolate named dragon attacks or a complete post-rebirth skill list for Erta. Her latest reliable state is therefore a sixth-class dragon and formation specialist who contributes to world-fusion calculations and Dragon’s Nest infrastructure. Claims about unique elements, breath weapons, or divine domains would go beyond the demonstrated evidence. (Chapters 310–335, 364)

Power progression

Relationships

• Yu IlHan: Erta begins as his assigned mana adviser, becomes the magical analyst closest to his inventions, and eventually rejects every divine faction to remain with him. He rescues her after the false conversion, rebirths her into Dragon’s Nest, and later becomes her husband.
• Liera: A senior angel, battlefield partner, and romantic rival. Erta’s formations restrain enemies for Liera’s spear, even while Erta compares the length and intensity of their respective bonds with IlHan.
• Kang MiRae: A human mage whose extraordinary talent makes Erta worry that her own role is redundant. Their capabilities overlap, but Erta’s angelic systems knowledge and long practical history remain distinct.
• Kim YeSeul: The space-time specialist with whom Erta calculates Earth’s large-scale formation and later world-fusion magic. Erta supports rather than replaces YeSeul’s central specialization.
• Spiera: A former superior whose continuing allegiance to Heaven places her against Erta’s defection. Spiera’s accusation of treason confirms how completely Erta’s personal judgment has displaced institutional obedience.

Items

• Traps of Destruction: Erta supplies Heaven’s operational requirements and helps mana-craft IlHan’s improved versions. Their creation is an early example of her system knowledge joining his manufacturing skill. (Chapters 16–32)
• Cross Bag: She helps coordinate the angelic Mana Crafting used to expand the bag’s storage functions. (Chapters 37 and 69)
• Flying Fortress: The mobile stronghold from which Erta coordinates with IlHan’s unaffiliated force after abandoning Heaven. (Chapters 203–276)
• Cradle of Miracles: The Dragon’s Nest artifact that rebirths Erta and lets her achieve sixth class without returning to angelhood. (Chapters 309–310)