Chisaki

Biodata

Background

Chisaki grew up around the Train Conductor Café on Honami Pedestrian Street. She watched her father keep accounts on an abacus while her mother sat beside him. The café’s photo wall preserves pictures of her childhood, including one of seven-year-old Chisaki riding on the capybara Bozai’s back 124 126.

At seven, she was stranded with Chengxia during a secondary collapse in western Old Honami. Searchers found Chisaki at the mouth of a drainage channel on the seventh day, counting to herself. She remembered a distant tune from the ruins, but not its words 130.

After she was brought back, someone occupied the family shop for three months. Chisaki crouched outside holding Bozai and refused to leave, insisting, “This is my shop.” Her attachment to the café later shapes her refusal to raise its longstanding prices 126 130.

Appearance

• Build: Short 21.
• Hair: Glossy black hair reaching her waist, with a strand at her right temple tied with red cord 21.
• Glasses: Rimless spectacles, which she frequently adjusts while speaking or analyzing information 21 78.
• Clothing: Initially wears the Engineering Department uniform neatly and properly 21.
• Voice: Normally a cool, rational mezzo-soprano with an unusually even delivery 21 50.
• Monitoring device: Wears a thin metal ring at the back of her neck, registered under Ashihara’s Resonator procedures 124 125.

Personality

Chisaki treats observation, verification, and quantification as the foundations of understanding. She introduces herself to a familiar classmate by reciting her academic record, analyzes meals as biological data, and records emotional reactions even during a concert. Her insistence on precision often ignores the social awkwardness it creates 21 32 34.

Her detached manner does not mean she lacks feeling. At Flying Snow Velvet’s concert, she dismisses her reddened eyes as “abnormal corneal moisture.” Later, she retreats into repetitive cup-wiping when distressed by her childhood records or moved by Chengxia’s call 32 130 133.

She is also willing to join her friends’ mischief. She models confession probabilities, participates in romantic surveillance, and threatens Sigelica with severe network lag to extract details about Lu Hesi. Her affection for home is more openly expressed: she becomes unusually talkative when describing Honami and protects the café’s familiar prices for its neighbors 39 58 75 124 126.

Abilities & Skills

Eye of String Unraveling

Chisaki uses the Eye of String Unraveling to dynamically capture events for detailed analysis. A faint multicolored light appears in her eyes when she examines Zhou Yu’s confrontation with Auntie Li 21.

• Breaks down the encounter through game theory, psychology, and sociology 21.
• Cannot fully explain Zhou Yu’s behavior through her existing models; she asks him directly how he gained his advantage 21.

Data Analysis and Technical Reconnaissance

Her tablet-based analysis supports investigations, battlefield decisions, and records management 93 94 103 116.

• Matches Flying Snow Velvet’s movements against Aimis’s physical assessment data with 99.8% certainty 32.
• Identifies enemy weak points, including armor thickness and exposed core placement 94.
• Locates fifteen heat sources concealed around trapped pavilions 103.
• Detects evidence that a crate previously held a Class A resonance material case 100.
• Seals the dual-carrier log at Aalto’s request 116.

Engineering and Network Control

Chisaki works from an Engineering Department laboratory and supplies specialized equipment for Zhou Yu’s plans 78.

• Provides ordinary-looking guards made from compressed, gravitationally reconstructed neutron-star material 78.
• Each wrist guard weighs 50 kilograms; miniature gravity modules absorb 90% of the wearer’s kinetic energy, converting it into harmless heat 78.
• Configures their camouflage data so routine academy scans identify them as fashionable sports accessories 78.
• Quickly opens a mechanical escape-room lock 100.
• Can impose severe network lag on a targeted personal device; Sigelica takes the threat seriously 75.

Chemical and Voice Analysis

Chisaki helps trace the group’s abnormal speech to Lu Hesi’s medicinal candy 51 53.

• Tests saliva and detects traces of a temporary receptor blocker 51.
• Finds a 87.3% deviation between a residual compound’s molecular formula and the standard formula 53.
• Uses a spectrometer to compare voiceprints and attributes her altered voice to a temporary drug-induced neurotransmitter mismatch 53.
• Contributes test results and prescription records to the group’s medical malpractice complaint 51.

Audio Investigation

Chisaki records, segments, and compares the anomalous sound associated with Honami’s Morning Voice 128 134.

• Identifies abnormal waveform spikes near the end of the chime 128.
• Compares three recordings whose eleven-second waveforms almost perfectly overlap 134.
• Tests reverse playback while investigating the incomplete sound 134.
• Limit: Cannot personally hear the faint wrong note that Dania detects, despite replaying it at full volume 128.

Café Work

• Makes coffee and pours train-shaped latte art, a design taught by her father 127.
• Checks accounts and bean inventory 133.
• Maintains the café’s old prices despite Zhou Yu’s warning that they are financially unfavorable 126.

Equipment & Items

• Electronic notebook/tablet and stylus — Used for personal research files, biometric observations, tactical scans, reports, and audio analysis 21 94 128.
• Registered monitoring band — Scanned during entry registration in Honami; its records contain a restricted entry bearing her name 124 125.
• Power-limiting sports guards — Supplied to Zhou Yu to restrain Dania’s output during her physical test without revealing their purpose 78.

Story Role / Major Arcs

Joining Zhou Yu’s Circle

Chisaki approaches Zhou Yu in Cafeteria No. 3 to understand how he outmaneuvered Auntie Li. Her attention then shifts to Dania’s extraordinary appetite, alarming Dania into guarding her tray. Zhou Yu ends the interrogation by giving Chisaki a sweet-and-sour pork rib; she puts down her stylus, enjoys it, and buys a full serving 21.

She subsequently becomes a regular participant in the group’s outings and dormitory conversations, applying the same analytical habits to friendships and romance 32 34 39 73.

Candy Side Effects and Observatory Spying

Lu Hesi’s candy temporarily gives Chisaki a babyish, lisping voice. She continues explaining the problem with complete seriousness, making Linnai and Aimis laugh, then helps identify the drug responsible 50 51 53.

She later joins Linnai, Aimis, and Sigelica in spying on Zhou Yu and Dania at the abandoned observatory. Their camouflage net collapses at the moment the couple nearly kisses. Zhou Yu accepts their apologies but assigns each fifty star coins’ worth of labor and withdraws their meal sponsorship for a week 58 60.

Fieldwork in Huanglong and the Black Shores

During the journey to Huanglong, Chisaki provides threat assessments and battlefield targeting information rather than frontline attacks. Her work continues through the circus investigation, the trapped Old North Gate pavilions, and the mountain anomaly 93 94 100 103 106 107.

At the Black Shores, she handles technical logs and encounters information that forces her to reconsider her models of the organization’s access hierarchy and Aimis’s family. When the party leaves, she invites them to visit her family’s café in Honami 116 123 124.

Return to Honami

The group cleans and reopens the Train Conductor Café. Chisaki resumes coffee-making while Zhou Yu organizes staff contracts, and familiar neighbors return to the shop 126 127.

A restricted registry entry leads back to her childhood rescue. After confronting those records, she identifies the anomalous recording as the last tune she heard in the ruins and resolves to investigate it 125 130.

Her parents return during the stay. Chengxia also calls from the Black Shores, reassures the family, and asks Chisaki to save two cups for her return. Chisaki later admits that she had stood outside Chengxia’s residence during the earlier visit but could not decide what to say 133 134.

Rainbow Sound Tower and Departure

During Honami’s attack, Chisaki enters Rainbow Sound Tower to inspect its broadcast equipment. She discovers an old console whose tape has been running backward for decades. With Zhou Yu setting the tape forward and Chisaki counting, the bells and recording finish at 5:51; the tide stops and the Tacet Discords disperse 135 136.

She initially requests a detour to the Black Shores to visit Chengxia. Before departure, she postpones the visit to remain with her parents and the café, promising to go herself later. She entrusts Dania with bean daifuku and a handwritten letter for Chengxia instead 136 137.

Relationships

• Zhou Yu — Friend, research subject, and technical collaborator. He commissions her equipment and later gives her private time to process painful childhood memories 21 78 130.
• Dania — Friend whose appetite and emotions frequently enter Chisaki’s research notes. Dania’s hearing becomes essential to the Honami investigation, and she later carries Chisaki’s gift for Chengxia 21 32 128 137.
• Sigelica — Academy acquaintance and fellow Slacking Squad member. Chisaki alternately assists her, teases her through clinical analysis, and pressures her about Lu Hesi 21 64 75.
• Linnai and Aimis — Friends and fellow romantic conspirators. They share the candy incident, observatory spying, and resulting warehouse punishment 50 58 60.
• Chengxia — Childhood companion stranded with her in Old Honami. Chisaki struggles to approach her again, but ultimately sends a personal letter and promises a future visit 130 133 134 137.
• Her parents — Café owners who taught her its routines. She stays behind when Zhou Yu’s party leaves because their time at home together is rare 126 127 133 137.
• Bozai — Family capybara, café mascot, and childhood companion. He carried her around when she was seven and remained central to her attachment to the shop 124 130 133.
• Chisa — Fellow traveler from Ashihara. Chisaki assesses her combat capabilities before the journey and later supplies tactical information during the party’s battles 87 94.

Notable Quotes

“Verifying data is the foundation of clear cognition.” 21

“But exploring the unknown is a scholar’s instinct.” 21

“No raising them. The neighbors grew up eating here. Raising prices by a single yuan would be no different from tearing down the sign.” 126

“The knock is postponed, but the debt isn’t.” 137