Firefly

Biodata

Feature	Value
Name	Firefly (流萤)
Alias(es)	Firefly Mark IV; AR-26710; Scorching Knight
Species/Race	Gene-edited Glamoth Iron Cavalry soldier
Gender	Female
Affiliation	Glamoth Iron Cavalry (formerly); Sun Moon Royal Spirit Tool Master Academy; Eternal Night Palace; Scorching Knight Legion
Occupation/Role	Spirit Master; Scorching Knight Legion member
Status	Alive
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Innate Full Soul Power	37	Her Scorching Knight Martial Soul awakens with Innate Full Soul Power. 37
Level 14 Soul Scholar	55	Absorbs a 1,000-year Burning Bug spirit ring alongside Liu Xing through the Life Sharing Ritual; the ring is strengthened to 1,500 years. 55
Level 32	84	Absorbs a 10,000-year spirit ring; her shared absorption ability raises both her and Liu Xing by two levels. 84
Level 37 Soul Elder	89	Enters Sun Moon Royal Spirit Tool Master Academy at age eleven. 89
Spirit King	176	Appears as a Spirit King alongside Liu Xing; the pair route the Pink Lady clan with a single spear strike. 176
Five-ring Spirit King	166	Absorbs the Flame Lord's 100,000-year soul ring, obtaining a red fifth soul ring. 166
Six-ring Spirit Emperor	223	Refines Infernal Delicate Apricot's 100,000-year soul ring and soul bone, evolving the Scorching Knight Martial Soul. 223
Six-ring Spirit Emperor	241	Displays a configuration of two purple, two black, and two red soul rings in the tournament. 241
Soul Saint	402	Battles Tang Ya as a Soul Saint and overwhelms her with Scorching Knight Martial Soul Possession. 402

Background

Firefly was created as a Glamoth Iron Cavalry soldier and weapon against the Swarm. Her life was intended to be spent fighting until Entropickness—an irreversible dissociation of her physical structure—consumed her. She fought in wars across hundreds of planets, witnessing the deaths of countless fellow Scorching Knights. 2 3 18

While unconscious in space, Firefly was intercepted by mysterious starlight before Kafka could retrieve her for the Stellar Hunters. The starlight carried both her and Liu Xing across universes. 1 2

Liu Xing entered her mental space to survive and inadvertently experienced her memories; Firefly consequently received his memories as well. After awakening, she chose to seek a life beyond combat and to find a cure for Entropickness. The transit ordeal regressed her body into that of a small child, temporarily extending her lifespan. 3

When Liu Xing's soul began dissipating, Firefly accepted the Goddess of Life's inheritance and the Life Sharing Ritual without hesitation, allowing them to share life and become anchored to the new world. They were subsequently sent to Douluo Star to cultivate. 5 7

Luan Yu adopted Firefly and Liu Xing after meeting them near Dragon City. Firefly later attended the Sun Moon Royal Spirit Tool Master Academy, assisted Kong Deming's humanoid spirit-tool research, and was promised a future place in the Scorching Knight Legion alongside Liu Xing. 10 89

Appearance

Firefly has long silver hair, usually tied with a black ribbon, and distinctive eyes that are blue above and pink below. After crossing worlds, her body initially regressed to that of a three- or four-year-old child. 3

• Her usual outfit includes a black shoulder cape, orange scarf, white-and-green shirt, glowing gradient skirt, dark-green thigh-high stockings, and short boots. 29
• Her clothing incorporates wing-like motifs and glowing specks intended to resemble a firefly. 29
• During Martial Soul Possession, she manifests as a towering silver-white mech surrounded by green flames. 36 37
• Her Martial Soul avatar is accompanied by a silver-white mech phantom. 241

Personality

Firefly is gentle, soft-spoken, and deeply values the freedom to live an ordinary life. Having existed as a weapon, she treasures school, friendship, peaceful sleep, small trinkets, desserts, and the opportunity to experience the world as herself rather than as a soldier. 3 12

Her calm demeanor conceals a battle-hardened will shaped by planetary-scale wars against the Swarm. She remains composed under pressure, possesses exceptional restraint in combat, and becomes intimidatingly fierce when allies or Liu Xing are threatened. 18 23 134

She can also be possessive and jealous regarding Liu Xing, particularly when other women openly pursue or show intimacy toward him. 223 324 355 449

Abilities & Skills

Scorching Knight Martial Soul

Firefly's Martial Soul is a humanoid soul-tool type that manifests as a silver-white mech wreathed in green flame. Its unusual nature initially led observers to speculate that it was a Body Spirit or an exceptionally high-level fire-type Martial Soul. 36

• Possesses Innate Full Soul Power. 37
• Suppresses the Fire Phoenix Sword Martial Soul, suggesting an exceptionally high fire-element rank. 36
• Enables Martial Soul Possession as an advanced mech form. 36 402
• Evolves after refining Infernal Delicate Apricot's 100,000-year soul ring and soul bone. 223

Glamoth Constitution and Combat Instinct

Firefly retains the physical foundation and combat instincts of a Scorching Knight even after her bodily regression. Her experience fighting the Swarm far exceeds that of ordinary Douluo Continent Spirit Masters. 17 18 19

• Defeated older children with awakened Martial Souls before awakening her own. 17
• Dodged every attack from Nan Qiuqiu, including her first Spirit Skill, without counterattacking. 19
• Defeated Yu Tianlong and Xing Yan while deliberately holding back. 23
• Easily defeated Black Armored Knights in Slaughter City's entry trial without using soul skills. 206
• Swept seven Dragon Slaying Sect opponents as a Spirit Emperor, relying largely on physical ability and swordsmanship. 242

Firefly Mark IV Strategic Assault Armor — SAM

SAM is Firefly's exclusive mech, bound to her since birth and originally used in the war against the Swarm. 7

• At her peak, Firefly could destroy planets while wielding her full power. 7
• In the new world, SAM cannot draw on Path-derived Imaginary Energy. 7
• Transforming without that energy requires burning her life force, placing her remaining lifespan at risk. 7
• Soul power may potentially replace Imaginary Energy and life force as a power source. 18

Life Sharing Ritual

The ritual binds Firefly and Liu Xing through shared life, bloodline, power, and soul power. 5 7

• Allows Liu Xing to share Firefly's body-derived physical qualities and powers. 7
• Lets the pair share soul power during spirit-ring absorption. 55 84
• Increases their spirit-ring limits through repeated shared absorption. 84
• Permits the sharing of refined soul bones. 166
• Allows Liu Xing's soul power to reach Firefly even through the barrier of an Absolute Defense Spirit Tool. 135

Flame Techniques

Firefly's soul skills focus on amplification, extreme heat, mobility, and destructive sword attacks.

• Secondary Combustion — Enhances her flame output; gained from the Burning Bug spirit ring. 55
• Heavenly Fire — Raises flame temperature and improves fire-element control. 70
• Complete Combustion — A powerful amplification skill used alongside Secondary Combustion and Heavenly Fire. 84 139
• All Things in Heaven Move — One of two skills gained from the Flame Lord's 100,000-year soul ring. 166
• Cliff Edge Sword — Summons a massive Lava Giant Sword; shatters Nan Qiuqiu's Rouge Obliteration Sword. 166 263
• Kindling Flame Drawn Sword — A 100,000-year sixth soul skill that forms a great flame sword from condensed fire; it can be handed to an ally. 241 253

Swordsmanship

Firefly wields emerald-green longswords and the Rank Eight Spirit Tool known as the Emerald Twin Swords. 135 242

• Produces green sword aura capable of cutting through enemy attacks. 135 146
• Her sword energy easily defeated Black Armored Knights and severely damaged their armor. 206
• Used only swordsmanship and physical strength to defeat most of the Dragon Slaying Sect's seven combatants. 242
• Can reduce the temperature of her flames to avoid killing opponents. 242

Martial Soul Fusion Skill: Star Strider

Firefly and Liu Xing possess perfect Spirit Soul Compatibility and can use the Martial Soul Fusion Skill Star Strider. 94 135

• Their compatibility test reached 100% and destroyed the academy's Spirit Tool Detection Device. 94
• The fusion generated heat, pressure, and cracks in space during testing. 94
• Star Strider could be summoned across a seal and distance, bypassing Liu Xing's confinement in an Absolute Defense Spirit Tool. 135
• The skill devastated the arena and won the tournament semifinal team battle for Sun Moon Royal Spirit Tool Master Academy. 135

Equipment

• Elytra Transformation Device — A device Firefly carries while confronting the Goddess of Life. 5
• Emerald Twin Swords — Rank Eight Spirit Tools used for close combat and flame sword energy. 242
• Flame Sword — A great crimson fire sword formed through Kindling Flame Drawn Sword. 241
• Eternal Night Palace token — Provides spatial teleportation, allowing Firefly and Liu Xing to escape the blast area of the Light of the Scorching Sun. 193

Relationships

• Liu Xing — Life-sharing partner and closest companion. They exchanged memories, seek a cure for Entropickness together, and possess 100% Spirit Soul Compatibility. 3 5 94
• Goddess of Life — Benefactor who offered Firefly her inheritance and performed the Life Sharing Ritual that saved Liu Xing. 5 7
• Luan Yu — Adoptive guardian and mentor who took Firefly and Liu Xing to the Sun Moon Empire. 10 24
• Luan Feng — Luan Yu's elder sister; witnessed Firefly's Martial Soul awakening and later helped defeat the Flame Lord. 29 36 166
• Nan Qiuqiu — Close friend who admires Firefly and often relies on her; Firefly praises and protects her after their duel. 10 263 230
• Gu Yuena — Classmate and ally; Firefly has shown jealousy over Gu Yuena's open interest in Liu Xing. 58 324
• Meng Hongchen — Friend and romantic rival who openly seeks closeness with Liu Xing, provoking Firefly's hostility. 47 449
• Tang Ya — Opponent in the Scorching Knight Legion command competition; Firefly suppresses her despite Tang Ya's Soul Saint cultivation. 401 402 403

Story Role / Major Arcs

Cross-Universe Transit

Firefly is intercepted by mysterious starlight while drifting unconscious in space. She and Liu Xing cross worlds together, share memories, and form their first commitment: to survive and cure Entropickness. 1 3

Divine Inheritance and Douluo Star

Firefly accepts the Goddess of Life's inheritance to save Liu Xing. Through the Life Sharing Ritual, the two become bound for life and are sent to Douluo Star to cultivate toward the Life and Destruction godhoods. 5 7

Sun Moon Academy

After Luan Yu adopts her, Firefly develops as a Spirit Master, awakens the Scorching Knight Martial Soul, gains high-level spirit rings, and enters Sun Moon Royal Spirit Tool Master Academy. 10 36 55 89

Tournament Battles

Firefly establishes herself as one of the academy's strongest fighters through victories over academy regulars, the Star Luo team, Shrek opponents, and the Dragon Slaying Sect. Her one-versus-seven sweep earns Sun Moon Royal Spirit Tool Master Academy a perfect twelve points and direct advancement. 107 134 139 241 242

Slaughter City and Hell Road

Alongside Liu Xing, Firefly enters Slaughter City, passes the Black Armored Knight trial, reaches ninety-nine consecutive Hell Slaughterfield victories, and enters the Hell Road. 206 209 211

Eternal Night Palace and Legion Service

Firefly helps refine immortal herbs and high-level soul-ring resources for Eternal Night Palace. She later joins the Scorching Knight Legion and proves her superiority over Tang Ya in the competition for command positions. 223 230 401 402

Trivia

• Firefly cannot normally dream and needs very little sleep. She often watches the stars from high places until dawn. 28
• Her Swarm-derived genes attract insects; she particularly dislikes spiders and cockroaches. 29
• She is fond of Oak Cake Rolls, despite their reputation as bread mixed with sawdust. 12
• She enjoys using powerful soul tools but has little interest in researching or creating them. 58
• Firefly's preferred combat style is direct confrontation rather than prolonged research or planning. 58