Sir

Biodata

Feature	Value
Name	Sir (希儿)
Alias(es)	Black Sir
Gender	Female
Affiliation	Yan Country contestant in the National Destiny Forbidden Land 574 576
Occupation/Role	Valkyrie; user of the S-Class Valkyrie Armor Quantum Barrier Destroyer—Other Shore Twin 577
Status	Active 590
First Appearance	Chapter 64

Background

Sir was trapped in a quantum state and could not normally return to reality. Ling Yuan forcefully opened a path between worlds to bring her back, allowing her to resume her search for Bronya. Before separating, she and Ling Yuan promised to meet again with a pinky swear. 64

After returning, Sir traveled across the sea on her scythe and reunited with Bronya. She credited the Captain for rescuing her from the Quantum Sea and later confirmed that she had personally witnessed him save Kiana and Murata Himeko. 70 115

When Gray Serpent proposed information about sealing Sirin's will in exchange for Sir returning to the Quantum Sea, Mei refused to risk Sir's life. Sir nevertheless chose to return to help Bronya and Kiana, and Bronya insisted on accompanying her. 116

Sir later fought alongside Kiana's group against Otto. During the battle, her alternate personality, Black Sir, took control and severely injured Otto with a blood-red scythe and steel claws. 272

She was subsequently selected as a Yan Country contestant in the National Destiny Forbidden Land, where she explored alongside Ling Yuan. She defeated the B-Class Blue Lizard Giant Python through Black Sir's intervention and obtained an Electro Slime from the resulting treasure chest. 574 577 578 579

Appearance

Sir is depicted as a small, gentle-looking girl with dark-blue hair and sea-blue eyes. Her appearance changes dramatically when she equips her Valkyrie armor or yields control to Black Sir. 577

• Normal attire — Wore a deep-blue dress while traveling over the sea on her scythe. 70
• Other Shore Twin armor — A white S-Class Valkyrie Armor adorned with flower buds that bloom when she lands; she carries a silver scythe. 577
• Black Sir form — Her white accents turn crimson, her attire darkens, and crimson Honkai energy manifests around her. 577
• Blood-red combat form — Black Sir can appear as a blood-red swallowtail butterfly and wield a blood-red scythe with a dark-red vertical pupil set into it. 272

Personality

Sir is gentle, trusting, and emotionally open. She is deeply attached to Bronya, calls her “Sister Bronya,” and remained determined to find her even after returning from the Quantum Sea alone. 64 70

She is also shy and easily embarrassed, particularly when Ling Yuan gives her tailored clothing or notices her discomfort. Despite this softness, she willingly faces dangerous situations when her friends need help. 116 280 577

Black Sir

Black Sir is Sir’s violent alternate personality, associated with the internal voice called Ritscher. Unlike Sir’s apologetic and considerate demeanor, Black Sir is aggressive, bloodthirsty, and protective of Sir. 64 272 578

Black Sir regards threats to Sir with extreme hostility. She warned Sir away from the Honkai Crystal after experiencing visions of destruction connected to it, and she later considered Ling Yuan a potential threat to Sir. 582

Abilities & Skills

Quantum Barrier Destroyer—Other Shore Twin

Sir can transform into the S-Class Valkyrie Armor Quantum Barrier Destroyer—Other Shore Twin, manifesting a scythe and significantly greater combat ability. 577

• Her armor manifests in white light and is decorated with flower buds that bloom upon landing. 577
• She can engage B-Class fierce beasts directly, though her initial scythe strike failed to sever the Blue Lizard Giant Python’s reinforced scales. 577
• The armor’s silver Other Shore Gate reveals greater power when Black Sir assumes control. 577

Scythe Mobility

Sir can travel over water while riding her scythe. 70

• She crossed the sea rapidly enough to trigger an unknown-object alert at the Anti-Entropy base. 70
• Her scythe remains her primary weapon in both her standard and Valkyrie forms. 70 577

Black Sir Manifestation

Sir can allow Black Sir to take control of her body in battle. The transformation changes her appearance and combat style from controlled scythe fighting to brutal close-quarters attacks. 272 577

• Black Sir transforms Sir’s scythe into scarlet steel claws. 272
• Her claws tore through the Blue Lizard Giant Python’s scales and flesh. 578
• Crimson Honkai energy corrodes the surrounding ground and can leave the enemy unable to move. 577 578
• Black Sir’s violence is a limitation to Sir’s preferred gentle disposition; Sir later apologizes for her actions. 578

Herrscher Potential

Sir obtained a Honkai Crystal capable of turning her into a Herrscher, but no completed transformation is documented. 582

• Black Sir recognized the crystal as dangerous after receiving fragmented visions of a ruined city and a blood-covered version of herself. 582
• Ling Yuan believed Sir would be less vulnerable to a new Herrscher personality because she already possesses Black Sir. 582
• Sir accepted the crystal after asking whether becoming a Herrscher could grant her power comparable to Bronya’s. 582

Equipment / Items

• Scythe — Used for sea travel and combat. 70 577
• Quantum Barrier Destroyer—Other Shore Twin — Sir’s S-Class Valkyrie Armor. 577
• Electro Slime — An unknown cute item obtained from the Blue Lizard Giant Python’s treasure chest. 579
• Honkai Crystal — A treasure capable of turning Sir into a Herrscher; she accepted it but has not been shown absorbing it. 582
• Magical Girl SEELE outfit — A black-and-blue outfit made for her by Ling Yuan. 280

Relationships

• Ling Yuan — Rescued Sir from her quantum state and the Quantum Sea; they promised to meet again. Sir trusts him, calls him “Brother Ling Yuan,” and later explores the National Destiny Forbidden Land at his side. 64 574 590
• Bronya — Sir’s cherished “Sister Bronya.” Reuniting with her is Sir’s central goal after returning to reality, and they choose to enter the Quantum Sea together. 64 70 116
• Cocolia — Referred to by Sir as “Mother Cocolia.” Their reunion after Sir’s return from the Quantum Sea is emotional. 115
• Black Sir / Ritscher — Sir’s alternate personality and internal companion. Though frighteningly violent, Black Sir protects Sir and warns her against danger. 64 272 582
• Raiden Mei — Mei refused to endanger Sir’s life in exchange for a chance to save Kiana, which leaves a strong impression on Sir. 116
• Kiana — A friend Sir seeks to help through the Quantum Sea mission and later fights beside against Otto. 116 272

Story Role / Major Arcs

Return from the Quantum Sea

Ling Yuan returns Sir to reality from her quantum state. Sir then reunites with Bronya and reconnects with Cocolia and the Anti-Entropy group. 64 70 115

Abyss of the Sea

Sir chooses to risk returning to the Quantum Sea to help Bronya and Kiana despite its dangers. Bronya joins her rather than allowing them to be separated again. 116

Battle against Otto

Black Sir takes control during the confrontation with Otto, attacks him from the air, and injures him with scarlet steel claws. 272

National Destiny Forbidden Land

As Yan Country’s contestant, Sir accompanies Ling Yuan through the Forbidden Land. She reveals her Valkyrie combat form against the Blue Lizard Giant Python, while Black Sir ultimately kills the beast. 574 577 578

Dragon’s Den

Sir accompanies Ling Yuan into the SS-Class secret realm Dragon’s Den and receives a Honkai Crystal from one of its treasure chests, gaining the opportunity to become a Herrscher. 580 582

Trivia

• Ling Yuan calls Black Sir “the Sir certified by Sir.” 64
• Sir had never seen a desert before entering the National Destiny Forbidden Land. 576
• Ling Yuan created a Beyblade for Sir whose spirit resembles a one-third-scale Black Sir, which enraged Black Sir. 500