Kaguya

Biodata

Feature	Information
Name	Kaguya (辉夜)
Alias(es)	Princess
Species/Race	Hourai Immortal; former princess of the Moon 492 605 762
Gender	Female
Affiliation	Eientei; later resides in Jiu Ming's world and frequents the Mysterious Shop 539 596
Occupation/Role	Former Lunar princess; Jiu Ming's companion and occasional collaborator
Status	Alive; immortal 492 773
First Appearance	Chapter 166

Background / History

Kaguya was once a princess of the Lunar Capital. She and Eirin Yagokoro hid from the Lunar Capital, while the Watatsuki Sisters remained among those seeking to bring them back. Despite their hostile exchanges, Eirin's importance to both sides keeps the conflict from becoming irreparable 759 805.

She secretly visited Jiu Ming's Mysterious Shop and demanded that he obtain five specific items for her within five years. Her teasing and provocation helped push him into accepting the arrangement, while C.C. intervened to finalize it 166. Kaguya concealed the visit from Eirin, who later discovered that her student had left without notice 167.

Her feud with Fujiwara no Mokou remains a recurring source of destruction. During one confrontation, Kaguya used her power of eternity to slow Jiu Ming's movement and place him between herself and Mokou's attack; he escaped the restraint far faster than she expected 323 324 325.

After losing a contest to Jiu Ming, Kaguya chose to remain in his world rather than return home. She quickly became attached to computers, games, and the Mysterious Shop's conveniences, though Eirin repeatedly attempts to curb her habits 538 539 735.

Appearance

Kaguya normally appears as a striking young woman with long, straight black hair. Her beauty draws immediate attention even in unfamiliar settings, though she is usually more interested in games, food, or provoking others than in the attention itself 167 769 771.

• Long black hair in her usual form 167
• Can alter her appearance, including taking on Eirin Yagokoro's long white hair and likeness 773
• Maintains a composed, aristocratic bearing even when confronted or surrounded 763
• Often dresses casually while staying with Jiu Ming, particularly when gaming at home 538 596

Personality

Kaguya is proud, playful, and deliberately provocative. She mocks Mokou, needles the Watatsuki Sisters over their inability to retrieve Eirin, and routinely tests Jiu Ming's patience. She does not conceal her status-consciousness, once declaring that a former Lunar princess outranks an ordinary vampire 605 805.

She is also spoiled and manipulative when pursuing something she wants. When Eirin confined her, Kaguya escaped to seek a cloning ability from Jiu Ming, attempted to blackmail him by taking Little Nine hostage, and tried to force her clone to accept punishment in her place 596 597.

Beneath her laziness, Kaguya is observant and intelligent. She analyzes unfamiliar supernatural phenomena, understands the mechanics of one-way barriers, recognizes conspiracies surrounding Contractors, and can infer information from Jiu Ming's reactions 759 763 778. Her confidence weakens sharply when Eirin personally threatens to retrieve her 596.

Abilities & Skills

Manipulation of Eternity and the Instantaneous

Kaguya's principal power is a time-based ability that manipulates “eternity” and the instantaneous.

• Can turn a few seconds of network access into a state of effective eternity, allowing a signal to persist 535.
• Modified an energy conversion furnace into a repeating temporal cycle that continuously supplies electricity 535.
• Can drastically slow a target's perception and movement; Jiu Ming found a distance of less than a centimeter effectively impossible to cross while under her restraint 324.
• Can selectively exclude specific beings from her ability's area of effect while suppressing everyone else within range 761.
• Can render surveillance equipment ineffective and pass guarded areas without being noticed 761 762.
• Maintaining her power of eternity across worlds consumes substantial energy and can leave her collapsed from exhaustion 538.

Hourai Immortality

As an Hourai Immortal, Kaguya does not remain dead from fatal injuries.

• Her immortality is linked to the Hourai Elixir 736.
• She is described as able to revive after death, though exhaustion from prolonged ability use can temporarily incapacitate her 538 773.

Concealment and Transformation

Kaguya can hide her presence and alter her outward form.

• Secretly traveled to the Mysterious Shop without Eirin being able to find any trace of her 167.
• Concealed herself and Jiu Ming while infiltrating a restricted high-class event 762.
• Transformed into Eirin's appearance, including white hair, though the disguise would not protect her from Eirin's retaliation if discovered 773.

Other Techniques

• Can control wooden objects 769.
• Left behind a strand of hair capable of producing a powerful effect when exposed to a strong energy reaction 330.
• Quickly adapted to computers and electronic entertainment after arriving in Jiu Ming's world 539.

Equipment / Items

• Fire-Rat Robe — Kaguya's robe, which protected against the remaining shockwaves of Mokou's flames after Jiu Ming broke free of Kaguya's time restraint 324.
• One-use Cloning Sealed Card — Given to her by Jiu Ming after she demanded a cloning ability; it produced a temporary duplicate with the same personality and motives 596 597.
• Kaguya's hair strand — A strand left at the Mysterious Shop that reacts powerfully to strong energy activity 330.

Relationships

• Jiu Ming — Began as the shopkeeper bound to retrieve five items for her; later becomes her housemate, companion, and frequent target of teasing 166 539 761.
• Eirin Yagokoro — Her guardian and most important confidante. Eirin worries about Kaguya's recklessness, confines her when necessary, and remains able to intimidate her into returning home 167 596 805.
• Fujiwara no Mokou — Immortal rival and persistent enemy. Their arguments routinely escalate into violent fights and property damage 323 538 564.
• Watatsuki no Yorihime and Watatsuki no Toyohime — Lunar Capital pursuers who want Kaguya and Eirin returned. Kaguya taunts them relentlessly, but their shared connection to Eirin prevents total hostility 737 759 805.
• Reisen — An Eientei rabbit who relays Eirin's orders and later returns with Kaguya to the Mysterious Shop 596 841.
• C.C. — C.C.'s intervention helped secure Kaguya's original agreement with Jiu Ming 166.
• Silver — Treated by Kaguya as a friend during Silver's emotional awakening; the two spend time playing games and trying on clothes 795.

Story Role / Major Arcs

• Five-Item Agreement — Kaguya commissions Jiu Ming to acquire five items and personally deliver them within five years, beginning their long-running association 166.
• Conflict with Mokou — Her encounter with Mokou exposes the reach of her time manipulation and reignites their longstanding feud 323 325.
• Mysterious Shop Residence — After losing to Jiu Ming, Kaguya decides to stay in his world, becoming a habitual gamer and recurring source of chaos at the shop 538 539.
• Contractor World Excursions — Accompanies Jiu Ming through the Contractor world, helps infiltrate a birthday banquet, and offers insight into barriers, conspiracies, and supernatural phenomena 761 762 763.
• Lunar Capital Dispute — Continues resisting the Watatsuki Sisters' attempts to retrieve her and Eirin, while using Eirin's eventual appearance to humiliate them 805 812.
• Mysterious Shop Development — Returns alongside Reisen and remains involved in the shop's expanding cross-world community 841.

Notable Quotes

“As long as there's a network, even for just a few seconds, it'll do. So long as I seize the chance, I can turn those few seconds into eternity!” 535

“The capital for me to be a NEET.” 768

“If I want to run away, who can stop me?” 596

Trivia

• Kaguya openly embraces being a shut-in and claims she could remain one for another thousand years without concern 768.
• She becomes especially enraged when Mokou threatens or destroys her computer setup 538 564.
• Her clone immediately developed the same selfishness and gaming obsession as the original, leading the two to argue over who should return to Eirin 597.