Kallen

Biodata

Feature	Value
Name	Kallen Kaslana (佐藤西垒)
Alias(es)	Phantom Violet; “Sinner Kallen”; Shield of the People; Serenade of the Sixth Night / Ice Kallen / Nocturne (a separate manifestation of her life) 405 496 610
Species/Race	Human; member of the Honkai-resistant Kaslana family 467
Gender	Female
Affiliation	Kaslana family; Heavenly Mandate / Schicksal (former Valkyrie captain) 467 468
Occupation/Role	S-rank Valkyrie; former captain of Heavenly Mandate’s Valkyrie force; rebel and phantom thief 468 496
First Appearance	Chapter 1 404

Background / History

Kallen was born in 1453 as Francis Kaslana’s eldest daughter. A righteous but straightforward warrior, she passed the Kaslana trials and became captain of Heavenly Mandate’s anti-Honkai Valkyrie unit at sixteen. She was regarded as the organization’s strongest S-rank Valkyrie. 468

During Heavenly Mandate’s Eastern Expedition, Kallen brought Judas’s Oath to Shenzhou and was decisively defeated by the Chiyuan Immortal, Fu Hua. Fu Hua’s words—that Judas existed to protect humanity—left Kallen questioning what Heavenly Mandate truly protected. 181 2360

Kallen’s doubts became open rebellion after she witnessed Heavenly Mandate elders performing human experiments with Honkai energy. She stole a black box believed to be a dangerously unstable Honkai source, intending to prevent a catastrophic release in a city of more than a million people. Injured but still able to defeat more than ten pursuing Valkyries, she was eventually shot and fell into the sea. 468 469

Heavenly Mandate publicly branded her a thief whose actions prolonged the Black Death, turning the former “Shield of the People” into a wanted criminal across Europe. Kallen did not regret acting against the organization, believing that inaction would have cost more lives. 469 610

The black box actually contained the sealed Twelfth Herrscher. During the Far Eastern events, Kallen encountered Nocturne, a physically identical manifestation connected to the Serenade of the Sixth Night battlesuit. Kallen describes Nocturne as “another version” of herself, while the narrative identifies the battlesuit as a fragment of Kallen’s life rather than the original Kallen herself. 407 501 615

Appearance

Kallen is a white-haired, blue-eyed young woman. Her original body and Nocturne’s body are described as perfectly identical, including the placement of their moles. 2375

• White hair, often worn in a ponytail. 2364
• Blue eyes. 2375
• Appears around fifteen to sixteen years old despite the passage of years. 458
• As Phantom Violet, she wears a crow-like eye mask and dark blue attire associated with the Serenade of the Sixth Night outfit. 592 2398

Personality

Kallen is driven by an uncompromising belief that the strong must protect civilians. She is willing to defy Heavenly Mandate, endure persecution, and risk her own life rather than permit innocent people to suffer from Honkai or institutional cruelty. She also refuses to kill when avoidable, including when facing former comrades who have been sent to capture her. 468 515 601

Despite her status and combat ability, Kallen is simple, food-loving, and easily distracted by meals. Her apparent airheadedness does not extend to missions: she is cautious in combat, prepares detailed plans, and does not underestimate weak opponents. 591 2363

Abilities & Skills

S-rank Valkyrie Combat

Kallen was Heavenly Mandate’s only documented S-rank Valkyrie of her era and its strongest active warrior. Even while wounded, she defeated a squad of more than ten Valkyries during her escape. 468 581

• Excels at close-quarters combat, firearms, sword use, and rapid disarming maneuvers. 460 468
• Can deflect gunfire with a sword and overpower trained Valkyrie opponents. 460
• Maintains tactical caution rather than relying solely on superior strength. 591

Kaslana Bloodline

The Kaslana family possesses natural resistance to Honkai energy, allowing its members to serve as frontline anti-Honkai warriors. 467

• Grants exceptional compatibility with Honkai-based combat. 467
• Supports Kallen’s role as an S-rank Valkyrie and her ability to wield powerful Divine Key weaponry. 468 608

Judas’s Oath

Judas’s Oath is Kallen’s exclusive Divine Key: a massive golden cross bound in heavy chains. Its presence greatly increases her combat power. 610 611

• Can be carried and deployed despite its immense size and weight. 611
• Allows Kallen to confront threats on the level of Herrschers. 608
• Its loss significantly weakened Heavenly Mandate’s assessment of Kallen during her rebellion. 585 591

Phantom Thief Techniques

After becoming disillusioned with Heavenly Mandate, Kallen adopted the identity of Phantom Violet and robbed the wealthy to help the poor. 496

• Uses a black mask formerly belonging to performer Marian William Shakespeare. 2398
• Operated with Otto’s assistance, using equipment such as a smoke-bomb necklace and sling bracelet. 2398
• Relies on stealth, deception, and theatrical advance notices rather than direct force alone. 2398

Serenade of the Sixth Night Manifestation

Serenade of the Sixth Night is associated with Kallen’s life-fragment and appears through Nocturne, also called Ice Kallen or Witty Kallen. This manifestation is distinct from the original Kallen, though it possesses her appearance and identity. 405 407 615

• Uses ice-element attacks and the special energy resource Night Eye. 412
• Can activate Tide of Lightlessness, splitting into two ethereal blue figures that move through solid objects while becoming immune to attacks. 412
• Is documented at SSS rank with fully maxed stats, the five-star pistols Echo of Night, and the Ye Cai Zhang stigma set. 406

Equipment / Weapons / Items

• Judas’s Oath — Kallen’s chained golden-cross Divine Key and signature weapon. 610 611
• Dual pistols — Kallen’s standard support weaponry in anti-Honkai combat. 515
• Black box / Honkai Source Crystal container — The artifact Kallen stole from Heavenly Mandate to stop its dangerous use in human experimentation. 468 469
• Phantom Violet mask — Marian’s mask, later used by Kallen in her phantom-thief activities. 2398
• Echo of Night — Nocturne’s five-star dual pistols; every attack inflicts frost and additional physical damage, while the weapon grants sustained elemental and physical damage increases. 434

Relationships

• Otto Apocalypse — Childhood friend and former fiancé. Otto’s feelings become romantic and obsessive, but Kallen continues to regard him as a close friend; she later relies on him as the most viable replacement for Heavenly Mandate’s corrupt leadership. 467 603
• Nocturne — A separate Kallen-like manifestation associated with Serenade of the Sixth Night. Kallen accepts her as “another version” of herself. 404 615
• Francis Kaslana — Kallen’s father and the 29th head of the Kaslana family. His death devastated Kallen and motivated Otto’s attempt to save him through Void Archive. 468 495
• Fu Hua / Chiyuan Immortal — Defeated Kallen during the Eastern Expedition and forced her to reconsider the purpose of Judas’s Oath and her own ideals. 181 2360
• Yae Sakura — A Far Eastern Miko whom Kallen seeks to protect; Kallen later fights to protect Sakura from Hiyoumaru and seals both of them when Sakura becomes a Pseudo-Herrscher. 515 3310
• Yae Rin — Sakura’s younger sister. Kallen supports the effort to protect Rin and remains concerned for the sisters’ safety. 424 515
• Marian William Shakespeare — A performer whose anti-indulgence play inspired Kallen’s phantom-thief path; Marian gave Kallen her mask after Kallen rescued her. 2398
• Former Valkyrie subordinates — Kallen’s former troops pursue her after her escape, though some continue to believe she must have had a reason for betraying Heavenly Mandate. 468 585

Story Role / Major Arcs

• Eastern Expedition — Kallen fights for Heavenly Mandate in Shenzhou, loses to Fu Hua, and begins questioning the organization’s conduct. 181 2360
• Rebellion against Heavenly Mandate — She steals the black box to stop human experimentation, defeats pursuing Valkyries, and becomes a hunted criminal. 468 469
• Far Eastern Land and the Twelfth Herrscher — Kallen learns the black box contains the Twelfth Herrscher and becomes involved with Nocturne and the Yae sisters. 501 515
• Return to Schicksal — Kallen agrees to Nocturne’s plan to remove Heavenly Mandate’s corrupt elders and place Otto in control, while intending to retire from Valkyrie duties afterward. 603
• Hiyoumaru Seal — To save Yae Sakura from Hiyoumaru, Kallen fights while severely injured and seals both Hiyoumaru and the infected Pseudo-Herrscher Sakura. 3310

Notable Quotes

“I won't hand it over to you, and I certainly won't let those people continue to use it for those inhumane experiments. Absolutely not!!” 468

“Because... I am your sister! I said... I would be the Knight who protects you.” 466

Trivia

• Kallen’s original self and Nocturne are physically indistinguishable, even down to individual moles. 2375
• Heavenly Mandate considered Kallen its only S-rank Valkyrie; A-rank Valkyries were already considered elite. 581
• Kallen’s reputation shifts from the “Shield of the People” to a Europe-wide “sinner” after Heavenly Mandate’s propaganda campaign. 610