Blue Knight

Biodata

Power Progression

Title and Insignia

• Academy-bestowed identity: Her emblem represents the identity and symbolic meaning granted to her by the Knight Academy 547.
• Recognizable credentials: A Night Watcher in Black Well Town immediately recognizes her insignia as belonging to an Academy knight 513.
• Heraldic imitation: Lia copies her emblem to obtain temporary power, producing an aura faintly resembling the Blue Knight’s. The imitation is limited, but the Lantern Knight recognizes its potential for equipping an army 547 549.

Appearance

• Face and build: A pale young woman with sharply defined features and a usually cold expression. She is more than half a head taller than Lu Yuan 443 518.
• Hair: Deep blue, nearly black in a later description; usually gathered into a neat ponytail. At her debut, it is secured with a slender silver clasp 357 518.
• Eyes: Described as gray-blue, azure, and ice-blue; they shine blue when she seals herself within her threads 442 443 472 518.
• Clothing: Initially wears a dark long dress beneath a finely tailored outer coat. Her later traveling outfit includes a light blue-gray high-collared coat, leather bracers, shoulder straps, and dark flat boots 357 518.
• Distinguishing equipment: A waist-length pale-blue cape that unravels into threads, armor with threads moving through its seams, and a light-red-patterned rapier at her waist 413 518.

Personality

The Blue Knight is restrained, formal, and economical with words. At her first meeting with the underground expedition, she acknowledges Klaus with a nod and waits quietly in the place the Earl would have occupied. Her movements remain measured even when dressed for battle 357 358.

She is ambitious enough to risk death rather than remain Fourth Order indefinitely. Nevertheless, the presence beneath Bronze City frightens her despite her confidence, and she ultimately rejects the Crown’s promised advancement 443 445.

Her sense of duty includes protecting civilians and standing by trusted companions. She decisively agrees to help Black Well Town, while the Academy’s condemnation of betrayal and internal strife shapes her reaction to Leike attacking Klaus 472 514.

She dislikes Brunkel’s willingness to abandon people who might still be saved. Although she recognizes the Cleanser’s efficiency and authority, she remains wary of her methods and the possibility that official procedures could conceal personal revenge 624 625.

Her reserve does not prevent warmth or discretion toward trusted friends. Upon awakening after treatment, she shows gentleness toward Lu Yuan and asks to speak with him privately. Although she recognizes that he saved her, she neither presses him about his methods nor mentions the Sea of Knowledge 737.

Abilities & Skills

Practical Swordsmanship

Her swordsmanship emphasizes precise blocks, efficient counterattacks, and clean killing strikes rather than flourish. Lu Yuan treats it as a benchmark when assessing other swordsmen 426 549 550.

• Parries the Serpentine Chimera’s simultaneous attacks from multiple directions 368.
• Prevents the special Ghoul from closing the distance despite its relentless assault 419.
• Intercepts every drop of an explosive blood attack with a web of rapier strikes 419.
• Cuts through the Heat Eater by targeting the seams between its shell and flesh 516.

Escalating Sword Aura

Her aura and offensive force grow as she repeatedly blocks incoming blows. The resulting scarlet sword energy can be released in a concentrated counterattack 368 420.

• Forms a defensive sword net extending roughly three paces around her 368.
• Shreds flesh fragments and airborne spores within that range 368.
• Releases a cavern-wide scarlet aftershock that clears more than half the incoming Ghouls in one strike 368.
• Splits a blood-red pillar before continuing toward the special Ghoul 420.
• Has no stated upper limit in the observed exchanges; Lu Yuan cannot determine where its growth stops 368.

Thread Manipulation

The threads of her cape combine offense, protection, and movement support 518 523.

• Mobility: Anchors threads to terrain and Bronze Pillars, then contracts them to launch herself at extreme speed or evade attacks 429.
• Weapon control: Sends her rapier toward an enemy from a distance, though the Colossus repels it and transmits recoil through the threads 429.
• Transport: Secures a heavy silver sarcophagus without restricting her movement and carries Lu Yuan up a cliff 419 445.
• Protection: Wraps herself in tightly layered threads or forms an external protective barrier 440 442 453.
• Pollution suppression: Temporarily restrains contamination in injured Night Watchers 440.
• Harassment: Scatters threads to inflict shallow wounds and keep the Colossus focused on her 431.
• Restraint: Wraps the Colossus’s arm in threads and holds it in place through her own strength; the threads withstand its initial struggles 430.
• Regrowth: Threads begin regrowing after her cape is severely worn down in battle. The cape has returned to its original length by the time she prepares to leave Bronze City 436 440 508.

Physical Combat and Knight Breathing Technique

Even without her rapier and cape, she remains a dangerous close-range fighter. The Knight Breathing Technique strengthens both her physical toughness and mental resilience 668 669.

• Kills a Third Order Heretic with a knife-hand strike followed by a punch through his chest 668.
• Trades blows with a Fourth Order leader while already severely injured 669.
• Shatters a Fourth Order Heretic leader’s arm with a knife-hand strike when he attempts to disengage 671.
• With Brunkel’s assistance, overpowers the High Singer once she reaches close range, destroying one of his lives rather than killing him permanently 694 695.
• Cannot overcome every Fifth Order opponent: another leader vastly exceeds her strength and speed and sends her flying with one punch 690.

Pollution and Environmental Resistance

Her sword aura and threads prevent many pollutants from touching her, making her particularly effective against contaminated creatures 368 426.

• Is initially unaffected by the Bronze Pillar’s pressure, giving her an advantage over teammates in that environment 414.
• Continues fighting when intensified Copper Pillar pressure weakens much of the expedition 431.
• Is not immune to contamination: the blood mist released by slain Heretics erodes her sanity, and destroying one of the High Singer’s lives causes catastrophic backlash 668 694 695.
• Suffers serious limitations in the Land of the Dead Silence, where injuries and sanity erosion weaken her and external weapons cannot accompany her 667 668.
• Normally possesses formidable sanity strength despite her physical-combat specialization. During her weakened journey through the Land of the Dead Silence, Lu Yuan estimates her remaining sanity at only forty to fifty points 675.
• Requires outside treatment when contamination becomes entangled with her Pathway. Her eventual recovery results from Lu Yuan’s intervention, not an innate immunity or independent cleansing ability 728 734 737.

Equipment

• Light Red Patterned Rapier — Her principal weapon, also described as a red thin sword. It withstands the special Ghoul’s corrosive hands without damage; Klaus observes that it completely blocks that creature’s corrosion and contamination 413 419.
• Pale-blue thread cape — An extraordinary weapon capable of unraveling into countless threads for combat, defense, and movement 518 523.
• Armor — Threads pass through its seams and can wrap around the exterior to form an additional azure protective layer 413 453.
• Family-crest ring — Used to contact the Earl during his evacuation from beneath the Tower of Erudition 466.
• Knight Academy insignia — Identifies her as an Academy knight and carries the symbolic identity reproduced by Lia’s Heraldry 513 547.

History

Bronze City Assignment

The Grand Knight Commander sends the Blue Knight to Bronze City after predicting that it contains a means for her to reach Fifth Order, together with potentially fatal dangers. Seeking advancement, she accepts without much hesitation 443.

She first appears as the Earl’s representative at Klaus’s expedition assembly and requests to join the underground descent. During the battle against the Serpentine Chimera, she deflects its attacks, damages its connecting roots, and clears a large portion of its Ghoul reinforcements, creating an opening for the Great Ascendant 357 358 368.

She later joins the third underground assault. Her resistance to the Bronze Pillar’s pressure makes her a central close-range fighter against the special Ghoul. Deeper underground, she helps occupy the regenerating Colossus while the expedition searches for a way to contain it 413 414 419 429 431.

The Crown and the City’s Collapse

As contamination spreads through the Pipe Network Layer, she rescues corrupted Night Watchers and their Third Order captain before returning alone to investigate the source. She subsequently meets Lu Yuan amid the Eerie Inscriptions 440 442.

Near the collapsing Copper Wall, she becomes trapped in a vision of a Golden Crown promising Fifth Order. Lu Yuan carries her while escaping and uses his abilities to glimpse the vision. After rejecting the Crown, she awakens, takes control of her threads, and carries him to safety. She then throws the fading Crown into the Abyss 443 445.

During the wider crisis, she cuts back advancing Flesh and shields fleeing residents. She later accompanies Klaus and Lu Yuan aboard the Sky-Seeking Fortress to the Tower of Erudition, then retrieves the Earl from his concealed refuge under Night Watcher guidance 453 459 462 466.

Return to the Knight Academy

After benefiting from enlightenment beneath the Hope tree, she prepares to return to the Academy with Lu Yuan. During their journey, she explains that Academy cultivation involves forging one’s vow into a Pathway 502 508 512.

At Black Well Town, she agrees to investigate the mine creature and dismantles the Heat Eater’s shell with precise sword strikes. She then continues toward Snow Owl City, where she waits for the remaining applicants as the intake’s chief recruitment officer 514 516 518 521.

At the Academy, she oversees recruitment tests and combat matches, reviews candidates with the Astrologer Grand Knight Commander, and distributes recommended course lists. Privately, she warns Lu Yuan that attracting the Astrologer’s attention could draw him into dangerous conflict. Before leaving on assignment, she delivers his Academy badge 538 539 541 549 551 571.

Northern Territory Ambush

Her Watch City assignment becomes a mission to screen refugees alongside Brunkel. She is assigned partly to restrain the Cleanser’s excesses and partly to protect her amid the Northern Territory’s unrest 625.

After confronting Heretics among the refugees, their group seeks answers from the Northern Territory Tribal Alliance. The Third Elder’s people instead attack with two Fourth Order fighters and dozens of Third Orders. The Blue Knight and Brunkel kill one Fourth Order enemy, severely wound the other, and escape at the cost of serious injuries and one accompanying nun’s life 667.

The surviving nuns shelter their bodies in a snowy cave. When the two women fall asleep, their sanity is drawn into the Land of the Dead Silence, leaving their external weapons behind 668.

Land of the Dead Silence

Already weakened, the Blue Knight and Brunkel face constant sanity erosion and contamination released by slain Heretics. Lu Yuan and Frey encounter them during a battle and help them escape their immediate attackers 668 670 671 675.

The nuns summon an Angel whose golden light restores the women’s condition, but the Blue Knight remains outmatched by a powerful Fifth Order leader. Lu Yuan redirects the fight to create an opening against the High Singer; she and Brunkel seize it, and she delivers a head-shattering blow that destroys one of his lives. The High Singer subsequently regenerates 683 690 694 695.

The destruction of that life releases contamination into her sanity-formed body. She loses consciousness, begins decaying, and must be carried by Brunkel. Lu Yuan sends multicolored characters into her body to slow its collapse 694 695 697 702.

Critical Contamination

On awakening in the outside world, she immediately collapses again as mutation begins. Potions and Holy Water provide only temporary restraint. Brunkel prepares to execute her but stops after hearing an implanted command to take her to the Knight Academy—a safeguard Lu Yuan placed through the Sea of Knowledge 709 728.

The Astrologer Grand Knight Commander reaches the group and discovers that her consciousness and Pathway have both been deeply eroded. He escorts them back to the North Campus, where she is kept unconscious under a Stellar Sealing Formation. String Knight determines that the contamination has entwined with her Pathway: forcibly removing it would cause her to lose control immediately 724 728.

Treatment and Awakening

Lu Yuan develops a treatment plan that protects her Pathway and consciousness while addressing the contamination at its root. A basic Hope potion offers only a sixty-percent chance of success, which he considers too dangerous given her condition. The optimal plan instead requires refining a Leaf of Hope through the Sea of Knowledge to purify the wish within it before preparing the protective potion 730.

String Knight and Lantern Knight recognize that Lu Yuan and the Blue Knight are friends who have entrusted their lives to each other, and that he would not treat her survival lightly. Lu Yuan ultimately removes the contamination at its root and nourishes her with Refined Hope Potion. The ashen-black aura disappears, her breathing becomes deep and steady, and he confirms that the hidden dangers within her body have been eliminated. Her severe earlier depletion prevents her from waking immediately, so he plans to continue tending her during the next two or three days 731 734.

She awakens on the third morning and finds Lu Yuan beside her bed. After asking the medical knights to remain outside, she speaks with him privately. She remembers the events in the Land of the Dead Silence up to her loss of consciousness, including the attack on the High Singer, but knows nothing of what followed. She understands that Lu Yuan saved her without questioning his methods or mentioning the Sea of Knowledge. He explains the Land’s collapse and the Astrologer’s rescue, then leaves her to rest under the medical knights’ care 737.

Her awakening advances Lu Yuan’s Knight Academy progress to +1...2/?, which he interprets as confirmation that saving her involved him in a core Academy event. His use of Authority during the treatment also leaves a fleeting Taboo-level aura detected by the Academy’s monitoring Formation, triggering an alarm and investigation 737.

Relationships

• Lu Yuan — Expedition companion, traveling partner, and Academy recruit. She advises him about Academy life and warns him about the Astrologer’s attention; he later helps preserve her life and arrange her return for treatment. Their fellow knights regard them as friends who have entrusted their lives to each other. He ultimately eliminates her Pathway contamination, and she acknowledges his rescue while respecting the secrecy of his methods 445 502 541 702 728 731 734 737.
• Klaus — Allied commander in Bronze City. She follows his battlefield arrangements, shields him against the special Ghoul, and accompanies him to the Tower of Erudition 419 431 459.
• The Earl — The authority she represents in Bronze City. She receives his instructions, contacts him through a family-crest ring, and personally extracts him from hiding 357 358 466.
• Brunkel — Assigned mission partner whose brutality she distrusts. They fight together in the Northern Territory and the Land of the Dead Silence; Brunkel carries and protects her after her collapse. When her mutation appears uncontrollable, Brunkel nearly executes her but obeys the implanted instruction to bring her to the Knight Academy instead 624 625 694 695 709 723 728.
• Astrologer Grand Knight Commander — Academy superior. She consults him about recruitment but fears the consequences of his attention for Lu Yuan. He later rescues her and continuously maintains the formation containing her contamination 539 541 724 728.
• Margaret — Bronze City combat ally. Entrusted with the rescued Night Watchers while the Blue Knight returns underground to investigate 431 440.
• String Knight — Academy knight involved in her treatment. He identifies the dangerous entanglement between her contamination and Pathway and recognizes the depth of her friendship with Lu Yuan 728 731.
• Lantern Knight — Academy colleague who reviews recruitment records with her. He joins the effort to treat her after her return and recognizes that Lu Yuan would not make light of her life 539 728 731.

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