Yerin

Also known as Yerin Arelius

Major
First seen · Book 3 · Ch. 1

A sixteen-year-old girl with straight black hair cut sharply across her eyes and shoulders, her face and hands marked by pale scars from countless battles. She wears a tattered black robe cinched by a vivid blood-red rope belt, with a gleaming silver bladed arm extending from her shoulder like a scorpion's stinger. Her posture is always deadly and coiled, as though ready to strike at any moment.

Gender: female
Age: late teens
First appears: Book 3 · Ch. 1
Books: 3 of 7 read

Yerin evolves from a scarred, battle-hardened Highgold disciple carrying her master's Remnant into a formidable Underlord whose six silver sword-arms and crackling aura mark her as a rising star of the Blackflame Empire. Across the books, her combat instincts deepen, her Blood Shadow becomes both a dangerous liability and a potent weapon, and her bond with Lindon shifts from shared training to a romantic partnership that fuels both their advancements. By the Uncrowned tournament, she stands as a determined competitor whose scars and sword-arms tell the story of relentless growth under Eithan's unorthodox guidance.

Description · as of Book 7

A young woman with long black hair streaming behind her like a banner, dark eyes, and a determined expression. She wears a black sacred artist's robe with a sword at her waist. Six gleaming sword-arms stretch from her back as Goldsigns, and silver sword-aura crackles around her limbs. Scars from previous battles are visible on her skin.

Connections

Family & partnersFriends & mentorsRivals

Lindonclose companion
Begins as training partners in Blackflame, develops into close companions traveling together in Underlord, and becomes explicitly romantic by Uncrowned with regular communication and mutual emotional support
Akura Mercycompanion
Becomes a teammate and companion starting in Underlord, traveling and fighting alongside Yerin within the larger group dynamic
Eithan Areliusadopted disciple
Evolves from an adopted disciple relationship in Blackflame to a deeper father-figure dynamic by Uncrowned, with Eithan guiding both her combat skills and spiritual perception
BS
Blood Shadowparasitic spirit
Remains a constant parasitic presence that provides combat assistance while growing increasingly difficult to control across all three books
MS
Min Shueiformer acquaintance
Introduced in Uncrowned as the Winter Sage formerly engaged to Yerin's master, creating a complex mentor-like tension due to the Sword Sage's death
Jai Longopponent
Brief but pivotal rivalry in Blackflame that ends with Jai Long sparing her life after her Highgold advancement
Sopharanatothrival
First appears as a rival in Uncrowned with a vendetta stemming from her sister's death, escalating their tournament clashes

Story so far

BOOK 3Blackflame
- Advances to Highgold mid-battle against Jai Long on Shiryu Mountain after integrating her master's Remnant
- Joins Eithan Arelius as an outer disciple and begins training in the Blackflame Trials alongside Lindon
- Fights side-by-side with Lindon and Orthos, forging the core of their future team dynamic
BOOK 6Underlord
- Reaches Underlord rank while wearing Skysworn armor and leading with six fully manifested sword-arms
- Travels with the Arelius-Lindon team including Mercy and Orthos, balancing her Blood Shadow's influence
- Continues training under Eithan, refining her spiritual perception and combat techniques
BOOK 7Uncrowned (Cradle Book 7)
- Competes in the Uncrowned King tournament as a representative of the Blackflame Empire
- Clashes with rival Sopharanatoth, reigniting their feud over past grievances
- Navigates a complicated relationship with Winter Sage Min Shuei, tied to her late master's legacy
- Strengthens her romantic bond with Lindon through regular communication and emotional support during separation