Kiana

Biodata

Feature	Details
Name	Kiana Kaslana (琪亚娜) 86
Alias(es)	K423; Firefly; Finality Cat Cat; Herrscher of Finality; Herrscher of Flamescion 142 309 324 385
Species/Race	Human; K423 identifies herself as an experimental subject created by Otto and an extension of Sirin 385
Gender	Female
Affiliation	Hyperion crew; St. Freya Academy 1 99
Occupation/Role	Valkyrie trainee; Herrscher 99 101
Status	Active
First Appearance	Hyperion 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Herrscher of the Void vessel	101	K423 is identified as the vessel of the Second Herrscher, the Herrscher of the Void.
B-rank Valkyrie	153	Passed the B-rank Valkyrie examination after repeated retakes of the academic portion; her practical combat ability was not the issue.
Limited Herrscher of the Void control	250	Can summon a Subspace Spear and use a degree of Void authority while Sirin still retains part of the power.
Independent control of her body	322	Sirin leaves Kiana’s body after acknowledging Kiana’s conviction, allowing Kiana to fully control it herself.
Herrscher of Flamescion	324 325	Himeko gives her the Flamescion name. Kiana merges the Plague Gem, receives strength from her companions, and manifests the Flamescion Greatsword, armor, and cloak.
Herrscher of Finality / “God of Earth”	385 386	Becomes the Cocoon of Finality’s vessel and inherits Finality’s power while retaining her humanity. She resolves to use it for humanity’s advancement rather than domination.

Background / History

Hyperion Kiana

The Kiana who initially travels aboard the Hyperion comes from the “hell difficulty” version of the Guns Girl Z world alongside Raiden Mei. Having endured an exceptionally severe Honkai-ravaged world, she regards the Honkai Impact 3rd world as comparatively easy, though she remains affected by stories of its tragedies. Around familiar people, especially Mei and Zhang Wei, she shows a cute, innocent, and playful side that she generally hides from outsiders. 2 3 4

She serves as one of Hyperion’s Valkyries and regards the ship as her home. Kiana describes Hyperion as the embodiment of Captain Zhang Wei’s spirit and power, capable of traversing worlds, time, and space. 3 16

This Kiana is already the Herrscher of Finality at the beginning of the story. Her transformation gives her purple-and-gold regalia, golden eyes, and a Corona of Finality; even a restrained release of her energy destabilizes the Elysian Realm. 6 7 10

K423

A separate Kiana, later identifying herself as K423, arrives in Changkong City after stowing away on a cruise ship. She initially has no awareness of her past or Sirin’s influence. Zhang Wei had secretly aided her for years, including providing meals during her time in Siberia, while Siegfried watched over her from a distance without revealing himself. 83 92

Kiana enrolls at St. Freya Academy to train as a Valkyrie. Her combat performance is strong, but poor academic results repeatedly hinder her advancement. She forms close bonds with Mei, Bronya, Himeko, and Fu Hua while also learning that she is connected to Sirin, the Herrscher of the Void. 99 101 138 153

Her emotions awaken Sirin in Siberia, allowing the Second Herrscher to seize control of her body and massacre Anti-Entropy soldiers with Subspace Spears. Kiana later struggles with Sirin’s influence, particularly after Fu Hua abducts her under Otto’s orders. 50 178

Appearance

Kiana has white hair, fair skin, and clear blue or sapphire eyes in her ordinary state. Her regular appearance can appear deceptively gentle, particularly when she is asleep, despite her formidable Herrscher power. 4 172

• Herrscher of Finality form — Purple ceremonial attire traced with gold, a floating golden crown or Corona of Finality, golden eyes, and forearms covered in deep-purple energy marked by gold patterns. 6 10 112
• Herrscher of Void state — Her appearance can retain blue eyes when she controls the form herself, unlike Sirin’s characteristic cold golden gaze. 254
• Herrscher of Flamescion form — White-knight-like armor, a flame-like cloak, gauntlets, and the Flamescion Greatsword. 325

Personality

Kiana is energetic, blunt, and easily distracted by the things she enjoys, particularly games and Raiden Mei. She can be overconfident in battle, skip class to avoid self-study, and struggle with the academic requirements of Valkyrie training. Her lack of tact is particularly evident when she bluntly tells Xiao Shi that she is not Fu Hua. 51 89 138 153 250

Despite this immaturity, Kiana is deeply loyal and protective. Threats against Zhang Wei or her companions provoke an immediate and ruthless response, while Himeko’s apparent death leaves her devastated, guilt-ridden, and temporarily isolated from her friends. 10 183 184

Kiana gradually becomes more resilient and reflective. She withstands the Dominance Theater’s attempts to weaponize her past, accepts Sirin’s sorrow without excusing it, and resolves to ensure that no one else suffers as Sirin did. 321 322

As the Herrscher of Finality, she retains humility despite power that others compare to an Aeon or a god. She still considers herself a person and seeks a future in which Finality becomes a tool for humanity rather than a force above it. 115 385 386

Abilities & Skills

Power of Finality

Kiana’s Finality authority is the defining power of the Hyperion Kiana and later becomes K423’s ultimate power through the Cocoon of Finality.

• The Hyperion Kiana can suppress a Cocoon of Finality and considers planetary destruction effortless; she states that even universal destruction is within reach. 41
• Her Finality energy can overwhelm the Elysian Realm’s data structure and force Imaginary energy to retreat across the Sea of Stars. 10 112
• As K423, she inherits the Previous Civilization’s Finality power, becomes the Cocoon’s vessel, and gains the title “God of Earth.” 385 386
• Finality’s immense output initially prevents her from safely remaining on Earth; she requires training to control leakage that could endanger the planet. 309 310

Herrscher of the Void Authority

Kiana’s body contains Sirin’s consciousness and Void authority.

• Sirin can take control when Kiana’s emotions become unstable, manifesting golden eyes and overwhelming Honkai Energy. 50 179
• Sirin uses Subspace Spears and spatial abilities against enemies. 50 250
• Kiana eventually gains partial control of this authority before Sirin voluntarily leaves her body. 250 322
• The power’s misuse previously caused the destruction of Raven’s island while Sirin controlled Kiana’s body. 255

Herrscher of Flamescion

Kiana gains the Flamescion form through the Plague Gem, Himeko’s guidance, and strength entrusted by her companions.

• The Plague Gem merges into her body and becomes the foundation of her flames. 325
• She wields the Flamescion Greatsword, reforged with the Herrscher of Reason’s power. 325
• Herrscher of Knowledge power manifests as armor and gauntlets in the transformation. 325
• Her strength is explicitly tied to bonds with her companions rather than the puppets’ forced collection of Herrscher cores. 325

Power of Saintess

The Hyperion Kiana possesses the Power of Saintess, an ability she considers superior to ordinary holy blood.

• Can directly remove a Herrscher Core from a Herrscher’s body. 68
• Has extracted the Herrscher Cores collected by Hyperion to avoid destructive battles. 68
• Her power is sufficiently unusual that Mobius seeks to study it, a request Kiana refuses. 68

Valkyrie Combat

Even before fully mastering Herrscher power, Kiana is an effective close-quarters combatant.

• Uses skilled Gun Fu against the Dominance Theater’s puppets. 321
• Possesses strong practical combat results despite repeated academic failures. 138 153
• Her Kaslana constitution allows her to endure impacts that would be trivial only to someone with exceptional physical resilience. 86

Relationships

• Zhang Wei — Captain of Hyperion, long-term protector, and confidant. He secretly supported Kiana in her childhood, consoles her after Himeko’s apparent death, and supports her ascension to Finality. 83 184 385
• Raiden Mei — Kiana’s closest companion and romantic interest. Kiana is openly affectionate toward Mei and is immediately drawn to her when they meet at Senba Academy. 1 86
• Murata Himeko — Teacher and mentor. Kiana is devastated by Himeko’s apparent death, but Himeko’s guidance helps her accept the Herrscher of Flamescion title and continue forward. 183 324 327
• Sirin — Herrscher of the Void consciousness within Kiana. Their relationship begins in hostility and grief, but ends with Sirin recognizing Kiana’s conviction and leaving her body. 50 184 322
• Siegfried Kaslana — Father. He watches over Kiana from afar, torn between his paternal love and fear of Sirin’s influence. 50 83
• Cecilia — Mother. Kiana identifies herself as Cecilia’s daughter and is emotionally overwhelmed by their reunion. 309 385
• Theresa Apocalypse — Grandaunt and guardian. Theresa brings Kiana to St. Freya and repeatedly prioritizes her safety. 99 178
• Bronya Zaychik — Friend, classmate, and frequent verbal sparring partner. Bronya regularly challenges Kiana’s immaturity and academic weaknesses, while still entrusting Kiana with her power in the Dominance Theater. 153 323
• Fu Hua — Class monitor, mentor, and later an uneasy ally. Fu Hua abducts Kiana under Otto’s orders, causing Kiana to blame her after Himeko’s apparent death. 178 183
• Durandal — Sister by cloning and identity. Durandal is identified as the original Kiana Kaslana, while K423 carries her name; both ultimately accept each other as sisters. 178 328
• Kevin Kaslana — Ancestor and adversary. Kiana confronts him over the Stigmata Project, while Kevin later approves of her maturity and Finality ascension. 142 385 386
• Honkai Impact 2 Kiana — Alternate self and Finality instructor to the Kiana called Finality Cat Cat. Her harsh training teaches that Kiana to fully control her power. 310 313

Story Role / Major Arcs

St. Freya and the Second Herrscher

Kiana enters St. Freya as a transfer student and begins formal Valkyrie training. Her everyday recklessness contrasts with the danger within her: Sirin awakens in Siberia, and Kiana is later identified as the Herrscher of the Void’s vessel. 86 99 101

Himeko’s Apparent Death and Growth

After Fu Hua abducts Kiana, Himeko uses the God-Slaying Spear to expel Sirin and appears to fall into the Imaginary Space. Kiana collapses under grief and self-blame, leaves to fight Honkai Beasts alone, and eventually resolves to continue living for Himeko’s hopes. 178 183 184

Dominance Theater

The Herrscher of Domination’s puppets target Kiana’s deepest wounds: her identity as K423, Himeko’s supposed death, and the destruction caused by Sirin. Kiana endures their provocations, gains closure from Himeko within the Plague Gem, and becomes the Herrscher of Flamescion. 321 324 325

Finality Ascension

At the Cocoon of Finality, Kiana accepts every part of her identity—K423, Sirin’s extension, Kaslana daughter, Himeko’s student, and friend. She becomes the Herrscher of Finality with the intention of using that power to help humanity advance. 385 386

Notable Quotes

“I am Kiana Kaslana, an ordinary Valkyrie.”
— Kiana 385

“Goodbye, Herrscher of Void. I will work hard to ensure that no one else like ‘Sirin’ appears in this world.”
— Kiana 322

“This is the power of my companions. Puppets, this is the power of bonds, something you can never comprehend.”
— Kiana 325

Trivia

• Kiana’s recurring nickname is “Paramecium,” reflecting her poor academic performance and impulsive behavior. 86 310
• She once fell face-first while entering class because she was too focused on looking at Mei. 86
• Her history grades are stated to be in the single digits, despite excellent combat assessments. 138
• Kiana skips self-study to play games, then unsuccessfully attempts to sneak out of school without Zhang Wei noticing. 89