Erin

Biodata

Feature	Details
Name	Erin Campbell (艾琳) 629
Alias(es)	Princess Erin; wielder of the Light of Legends; Hero of the northeastern shore of the Vortex Sea 629
Species/Race	Human; later transformed into a Blood Clan (vampire) 471 472
Gender	Female
Affiliation	Campbell Family; Campbell Principality; Northern Relief Army 452
Occupation/Role	Princess of the Campbell Principality; knight; military commander; political reformer 436 452
Family	Daughter of the late King Aaron Campbell; younger sister of Grand Duke Edward Campbell 629

Power Progression

Stage / Realm / Level	Chapter	Notes
Extraordinary Power awakened	538	Awakened her Extraordinary Power at age eight, unusually early compared with the usual age range of twelve to sixteen. 538
Bronze-level	212	Officially Bronze-level, though her physical strength and swordsmanship were already far beyond that assessment. 212
Platinum Grade	472	Quentin Copperforge identifies her as Platinum Grade after her transformation into a Blood Clan. 472
Diamond Grade	479	Officially advances to Diamond Grade after killing the Chaos Apostle Kailan; reaches the same rank once held by her father. 479
Amethyst Grade	571	Later breaks through another bottleneck during battle by burning her life force, though the exertion leaves her severely exhausted. 571

Background

Erin spent much of her childhood under her father’s protection, focusing on swordsmanship and court etiquette rather than high politics. When conflict over succession divided her elder brother Edward and second brother Gerlock, she was drawn into the struggle as an unwilling mediator who hoped to keep her family from being manipulated by ambitious nobles. 179

As a holder of the Light of Legends, Erin carries both the Campbell Family’s legitimacy and the expectations of its people. She initially sought out the rumored Flame King because she believed a powerful figure should be judged by her own observations rather than by suspicion or rumor. 179

Her arrival in Thunder City improves public morale and helps stabilize sentiment during a period of unrest. There, her concern for refugees and civilians becomes central to her public reputation. 180 201

Appearance

Before becoming a Blood Clan, Erin is described as a young woman of sixteen or seventeen with golden hair, emerald-green eyes, fair skin, and a refined noble bearing. 185 197

After sacrificing herself against Rolandall, her hair turns silver-white. Her eyes can become scarlet when Blood Clan instincts and bloodlust surface. 471 472

• Often carries the Light of Legends at her waist in sword form. 211
• Dresses formally for court and public events, favoring elegant gowns and carefully styled hair. 185 209
• Retains a knightly, disciplined posture even while concealing anxiety or embarrassment. 474 559
• Her silver-white hair becomes a visible source of suspicion because the Campbell Family is traditionally associated with blond hair. 489

Personality

Erin is compassionate, dutiful, and direct. She is willing to sacrifice valuable personal possessions to help civilians, personally visits refugee camps, and intervenes when workers are abused by powerful merchants. 188 201 436

She combines idealism with political practicality. Erin understands that Colin’s interest in her may have a purpose, but judges that his support still benefits the refugees and the Campbell Principality. She also recognizes the need for institutions such as labor protections and a Mage Guild rather than relying only on individual heroism. 199 436 591

In battle, Erin is decisive and fearless, often placing herself at the front of the formation. Her courage can become recklessness when the lives of her soldiers are at stake; she is willing to sacrifice herself rather than gamble with their safety. 212 470

Away from the battlefield, she is easily flustered in matters involving Colin. She becomes jealous of women close to him, tries to maintain noble composure, and relies on Teresa’s often-questionable romantic advice. 200 561 629

Abilities & Skills

Light of Legends

Erin wields the Campbell Family’s hereditary divine weapon, the Light of Legends. It can channel the strength and heroic spirits of her ancestors, allowing her to exceed her own natural rank. 212 452

• Can emit Holy Light that hinders undead and Little Devils. 211
• Can invoke ancestral heroic spirits, including Angus Campbell’s Unbreakable Wall, which manifests as a defensive shield and retaliatory force. 212
• Can assume multiple weapon forms, including a longsword, heavy cavalry lance, longbow, and dual short swords. 477 479 585
• Its power can destroy Chaos energy and overwhelm opponents stronger than Erin’s own measured grade. 452
• Heavy use severely strains Erin; she has burned her life force to force breakthroughs and has suffered exhaustion after battle. 470 571

Swordsmanship and Martial Strength

Erin is a highly trained Campbell knight whose combat ability consistently surpasses her recorded rank. Even while Bronze-level, Leon judges that her raw strength could exceed his own without magic. 212

• Deflects Xi Xi’s illusion-created blade barrage and breaks her weapon through rapid sword strikes. 212
• Uses explosive movement and close-quarters swordsmanship against Chaos Apostles, ogres, Ratfolk, and enemy armies. 476 568 630
• Can adapt immediately to unfamiliar forms of the Light of Legends, making her effective with nearly any weapon. 602
• Her physical reflexes remain formidable even in casual situations; she defeats Vivian in a snowball fight with a high-speed throw. 602

Blood Clan Physiology

Erin becomes a Blood Clan after sacrificing herself to defeat Rolandall. The transformation changes her appearance and forces her to confront instincts she considers incompatible with her knightly ideals. 471 474

• Possesses fangs, scarlet eyes, heightened vitality, and episodes of bloodlust. 472
• Has difficulty sleeping because human habits conflict with her Blood Clan instincts. 566
• Her increased vitality gives the Light of Legends a greater supply of power, strengthening her combat performance. 568
• Requires perfume and magical assistance to conceal her Blood Clan aura from allies and the public. 474
• Remains determined not to yield to Chaos or abandon her principles despite her transformation. 474

Leadership and Governance

Erin is an active commander and administrator rather than a ceremonial princess. She leads the Northern Relief Army, manages political pressure within the Campbell Principality, and advocates for structural reforms. 452 591

• Orders Horace to reinstate an injured worker and pay full compensation. 436
• Announces a Labor Law establishing a minimum wage and worker protection fund. 436
• Plans industrial development to create employment for refugees. 209
• Pushes to establish a Mage Guild in Thunder City to address the principality’s weakness against organized magical forces. 591 592
• Supports schools, orphanages, textbooks, and educational exchange with Karen’s New Covenant organization. 626

Equipment / Weapons / Items

• Light of Legends — Her ancestral divine weapon and primary armament; can transform into several weapon forms. 212 479 585
• Golden Pocket Watch — A valuable dwarf-crafted gift from the late Emperor that did not require winding or Magic Crystals; Erin sells it to aid villagers attacked near Silverpine Town. 188
• Magic potion — Used during her duel with Kailan to raise her aura and sustain her combat ability. 477
• Blood Clan aura-masking perfume — Given by Colin to help conceal her vampire identity. 474

Relationships

• Leon / Colin — Erin first meets Leon under his identity as Prince Colin at her banquet in Thunder City. Their correspondence, mutual support, and shared campaigns develop into deep affection, though Leon’s hidden identity and other relationships repeatedly complicate matters. 197 200 471 629
• Teresa Pegg — Erin’s loyal female guard, confidante, and battlefield companion. Teresa protects Erin, helps conceal her vampire identity, and frequently interferes in her romantic life with Colin. 179 476 561
• Grand Duke Edward Campbell — Erin’s elder brother and the current Grand Duke. She initially tries to mediate the succession conflict around him, while later working alongside his administration on the Mage Guild and educational reform. 179 591 626
• Karen — Saintess of the Salvation Army and a fellow Chosen One. Their initial rivalry over Colin develops into mutual respect and cooperation on schools and orphanages in Duskwood Province. 468 626 629
• Mia Padrick — Erin bonds with Mia over their shared desire for justice and plans to collaborate with her on a play exposing the Tribunal’s abuses. 560
• Vivian — Leon’s possessive sister. Erin treats Vivian with kindness despite romantic tension around Colin, and the two maintain a competitive relationship. 559 602
• Ophelia Castellion — A friendly rival for Colin’s attention. Though they compete openly, Erin recognizes Ophelia’s courage and accepts her challenge to grow stronger. 629 659
• Quentin Copperforge — Initially distrusts Erin after learning she is a vampire, but accepts her continued presence for the sake of the war effort after Colin intervenes. 471 472

Story Role / Major Arcs

Thunder City and Refugee Relief

Erin arrives in Thunder City amid the Campbell Family’s internal succession crisis. Her presence reassures the population, and she uses her position to support refugees, raise charity funds, and seek solutions for regional instability. 180 188 201

She meets Colin at a banquet she hosts, beginning a relationship that becomes politically important as well as personally significant. 197 201

Silverpine and the Light of Legends

When demon activity threatens the region, Erin demonstrates that her Bronze-level designation does not reflect her true combat ability. She invokes the Light of Legends against Xi Xi, using ancestral power to defend herself and drive the Little Devil away. 211 212

Labor Reform and Industrial Development

Erin confronts merchant Horace after his mistreatment of workers triggers a rebellion. She resolves the immediate crisis by compelling compensation and reinstatement, then establishes labor protections through a new Labor Law. 436

She also promotes industrial development and later advocates for a Mage Guild to protect the Campbell Principality against organized magical threats. 209 591 592

Duskwood Campaign

As commander of the Northern Relief Army, Erin leads the successful defense of Torrent Pass and kills Finnian through the Light of Legends. 452

During the battle against Rolandall, she sacrifices herself to invoke a miracle. She survives, but awakens as a Blood Clan with silver-white hair and an uncertain future. 470 471

Erin continues fighting beside Colin despite the transformation. She kills Kailan with Colin’s magical support, reaches Diamond Grade, and becomes a symbol of the Campbell forces’ resistance against Chaos. 477 479

Reconstruction and Alliance Building

After Duskwood’s liberation, Erin defends the rights of Campbell settlers and supports the region’s recovery. 485

She later works with Karen to support New Covenant schools and orphanages, arguing that the people of Duskwood should be judged by their actions rather than by the Papal Court’s distant accusations. 626

Notable Quotes

“I will not let you harm another innocent person. A Campbell knight will end your atrocities here!” 476

“Although our beliefs differ, we are all subjects of the Holy Light, and that will never change.” 626