Airi

Biodata

Feature	Details
Name	Airi (爱莉)
Alias(es)	Silver Witch; Fourth True Ancestor; Divine Envoy of Lust
Species/Race	System-created feminine clone of Fang Zheng; later a Vampire and the Fourth True Ancestor; subsequently a Divine Envoy 2381 2420 2511
Gender	Female
Affiliation	Fang Zheng's system; Hogwarts (former faculty); Kagami Island; S.E.E.S. ally
Occupation/Role	System test avatar, Witch, licensed Demon Hunter, former Defense Against the Dark Arts teacher, ruler of Kagami Island 2383 2425 2510
First Appearance	2381

Power Progression

Stage / Realm / Level	Chapter	Notes
System test avatar / Witch	2381 2382	Created by Fang Zheng to test the system and its interaction with a new world. An Experience Boost lets her rapidly learn practical witchcraft, particularly stealth and long-range techniques.
Vampire–Werewolf hybrid traits	2420	Receives racial traits to survive a forced fusion. Her Vampire trait grants Photophobia, while Iron Will is added to resist the Bestial Nature debuff.
Fourth True Ancestor	2427 2428	The former Fourth True Ancestor's memories, knowledge, and power awaken within her. She inherits Familiar Beasts, though they initially remain difficult to summon and control.
Angelic power: Camael	2434	Gains Camael, a crimson axe that combines physical and elemental damage, resolving a major weakness in close combat.
Electromagnetic and vibration-wave control	2436 2444	Uses the Golden Lion's electromagnetic power and awakens Crimson Twin Horns, enabling vibration-wave manipulation and attacks such as Meltdowner.
Opened spiritual circuits / Projection Magic	2451 2453	Forcefully opens spiritual circuits, ultimately reaching roughly two-thirds activation. This enables Projection Magic and the temporary recreation of Treasure Tools and their associated abilities.
Additional Vampire Familiar Beasts	2462	Awakens Silver Mist Carapace and White Steel Water Spirit after drinking Yuma's blood; these embody Vampire regeneration, mist-form movement, and charm-related abilities.
Gravity manipulation	2474	Awakens Night Yama Black Sword, gaining control over gravity and a second of the Four Fundamental Forces alongside electromagnetism.
Persona user	2483 2484	Receives a Tarot card in the Velvet Room and manifests a Persona: a white-robed girl accompanied by a giant bear.
Divine Envoy of Lust	2511	Gains Divinity and the title of Divine Envoy of Lust after resolving the Late Night TV case.
Age of Gods Magic wielder	3332 3360	Acquires Space Magic from the Orcus Great Labyrinth and later obtains Magic Amplification from the Sea of Trees Labyrinth.
Divine-domain combatant	3369 3370	Her Divine Power allows her to contend directly with the Imaginary Tree within its own Divine Domain; she ultimately replaces its collapsing core by migrating her world into it.

Background / History

Airi was created by Fang Zheng as a female system clone to attend Hogwarts and test the effects of system changes on a new world. Her original personality setting was deliberately “Null-Null-Null”: detached from others, uninterested in the main plot, and willing to treat the world as a sandbox for experiments. She does not possess a self-contained personality and is controlled through Fang Zheng's consciousness. 2381 2424

Her initial testing escalated immediately. After mastering practical witchcraft, she assassinated Quirinus Quirrell from long range, then used the cover identity of an MI6 agent to pressure Albus Dumbledore into offering her the Defense Against the Dark Arts post. 2382 2383

In her next life, Airi was born into the Akatsuki family alongside her younger sister, Nagisa. Her white hair and red eyes led to childhood ostracization, while her relationship with her father, Akatsuki Gashiro, remained distant and formal. She later obtained a Demon Hunter license and moved with Nagisa to Kagami Island under Nangong Natsuki's arrangement. 2421 2425

A confrontation connected to the Fourth True Ancestor forced its sealed power, memories, and Familiar Beasts to awaken inside Airi. She accepted the role pragmatically, building power, territory, and political leverage rather than submitting to the existing balance among the True Ancestors. 2427 2440

Appearance

Airi is a small, youthful-looking girl with striking white hair and crimson eyes. Her appearance is conspicuous enough to attract attention, and her unusual coloring contributed to her isolation before arriving on Kagami Island. 2381 2421

• Usually wears a black witch's robe, pointed hat, and leather boots, even over a school uniform. 2425
• Frequently travels by broom rather than conventional transport. 2421 2425
• Her Vampire Photophobia makes prolonged exposure to strong sunlight debilitating. 2420
• Can manifest black wings while forcing open her spiritual circuits. 2451
• Can assume a white Dragon form with crimson eyes when displaying her full power. 2464

Personality

Airi is calculating, detached, and highly pragmatic. She dismisses conventional heroic ideals, favors decisive action over debate, and regards preparation, reconnaissance, and overwhelming force as more reliable than luck or moral grandstanding. Her stated standard is a personal code of conduct rather than “justice.” 2382 2452 3317

She is also strategically ambitious. Rather than merely escaping threats, she tends to seize the institutions behind them: taking over Kagami Island, acquiring Kusugi Happy Enterprise, establishing territory, and building infrastructure capable of supporting her own faction. 2473 2510 3318

Despite her cold presentation, Airi is protective of people she accepts as her own. She consistently safeguards Nagisa, takes responsibility for Astarte, Shion, and Yutou, and offers Little White a path to regain a human form. 2435 2452 2473 3322

Abilities & Skills

Witchcraft and stealth combat

Airi specializes in practical magic, infiltration, and ranged killing rather than direct physical combat.

• Uses Disillusionment Charm and Muffliato to conceal sniper attacks. 2382
• Employs Apparition, broom flight, Fiendfyre, Patronus Charm, and offensive curses. 2421 2423
• Summons a Dragon of Light Patronus powerful enough to repel Dementors. 2397
• Initially favored stealth because her physical Strength was low. 2382
• Harry Potter-era spells become inadequate against higher-tier enemies, forcing her to seek broader power sources. 2433 2453

Fourth True Ancestor and Familiar Beasts

As the Fourth True Ancestor, Airi possesses Vampire immortality, immense magical reserves, and a growing collection of Familiar Beasts.

• Camael — A crimson axe that combines physical and elemental damage, allowing her to bypass opponents resistant to magic. 2434
• Golden Lion — Grants electromagnetic-force manipulation; Airi uses it to imitate Railgun-style attacks and construct Meltdowner. 2436 2443
• Crimson Twin Horns — Manipulates vibration waves and can interfere with spatial effects. 2444 2447
• Silver Mist Carapace and White Steel Water Spirit — Represent Vampire abilities including regeneration, mist transformation, obstacle-passing, and charm. 2462
• Night Yama Black Sword — Controls gravity, granting Airi mastery over a second fundamental force. 2474
• Her Familiar Beasts were initially too dangerous and unwieldy for routine use; she preferred smaller-scale magic for ordinary targets. 2428

Projection Magic and spiritual circuits

Airi forcefully opens dormant spiritual circuits and fills them with magic power, allowing her to project weapons and reproduce their abilities.

• Can project Treasure Tools from Fang Zheng's Gate of Babylon, excluding EA. 2453
• Uses projected Greatswords, flight brooms, firearms, and weapon-based skills. 2453 2463
• Projection combines elements of Gate of Babylon and Phantasm Install. 2453
• Opening circuits carries severe physical risk; Airi previously blew off her own head while attempting it. 2453

Divine Power

Airi's status as a Divine Envoy lets her overwhelm beings without divinity and confront godlike opponents.

• Can kill ordinary Demonic Beasts and soldiers with the command “Die.” 3323 3366
• Command Death cannot instantly defeat opponents protected by comparable divine power. 3366 3367
• Her Divinity lets her withstand the Imaginary Tree's divine pressure within its own domain. 3369
• Her power is described as the strongest among Fang Zheng's three avatars because the God of Lust's portfolio is his strongest. 3369

Persona

Airi can manifest a Persona after entering the Velvet Room.

• Her Persona appears as a white-robed girl accompanied by a giant bear. 2483 2484
• It attacks through Divine Power, enabling Airi to damage Shadow creatures resistant to ordinary magic and weapons. 2483 2484
• Her Tarot representation is Desire. 2497

Technology and weaponry

Airi supplements magic with advanced technology and conventional weapons, particularly where physical attacks are more effective than spells.

• Uses sniper rifles, revolvers, grenade launchers, machine guns, ultraviolet-and-mercury anti-Vampire ammunition, and other firearms. 2382 2386 2436 2483 2489
• Can weaponize projected firearms to bypass barriers that nullify magic and abilities. 2489
• Built Sector 9 as an independent artificial island using technology from multiple worlds, including a reactor, ecological systems, desalination, and sunlight protection. 2445
• Created the golden space battleship Shigra's Radiance, equipped with four Super Gravity Cannons, 130 heavy point-defense cannons, 385 light point-defense cannons, and drone forces. 2477

Equipment / Weapons / Items

• Magic staff and wand — Her standard spellcasting tools. 2421 2432
• Broomstick — Primary method of flight and transportation. 2421 2425
• Camael — Crimson axe formed through angelic power. 2434
• Projected Greatsword — Created through Projection Magic for melee combat. 2453
• Firearms and specialized bullets — Used for long-range combat and anti-Demon Race operations. 2382 2436
• Shigra's Radiance — Golden mechanical city and space battleship serving as Airi's mobile fortress. 2477
• Holy Annihilation legacy — A gateway linking the real and spiritual worlds, seized by Airi as a server foundation for the Transmigrator Project. 2510

Relationships

• Fang Zheng — Creator and controlling consciousness behind Airi; she was made as a system-testing clone rather than an independent person. 2381 2424
• Yui — System AI who assists Airi with system adjustments, information gathering, and her original character setup. 2381 2383
• Akatsuki Nagisa — Younger sister. Airi is fiercely protective of her, though Nagisa is more socially open and optimistic. 2421 2460
• Akatsuki Gashiro — Father. Their relationship is cold and distant; Airi openly condemns his reckless archaeological pursuits. 2421 2474
• Nangong Natsuki — Demon Hunter associate and confidante. Their relationship mixes professional cooperation, teasing, and mutual understanding. 2425 2462
• Kishō Yukina — Lion King Agency Sword Shaman assigned to observe Airi. She becomes Airi's trusted junior and frequent combat partner. 2429 2435
• Astarte — Homunculus rescued from the Slaughter Teacher. Airi becomes her guardian, and Astarte lives in her household as an assistant and maid. 2435 2440
• Shion — Former imitation angel and Mask Parasite. Airi defeats her and accepts responsibility for her guardianship. 2452
• Blue Feather Asagi — Airi's close school friend and a highly capable programmer. Asagi develops jealous, unresolved feelings regarding Airi's closeness with Yukina. 2425 2436 2459
• Sendou Yuma — Nagisa's childhood friend with a troubled connection to Airi. Airi later offers to help free Yuma's mother through legal cooperation. 2461
• Eguchi Yutou — Former Kusugi Happy Enterprise test subject. After dismantling the company, Airi becomes Yutou's guardian. 2468 2473
• Little White — Reincarnated spider whom Airi accepts as a disciple and teaches the Golden Tortoise Heart Method. 3322
• Momo — Ally in Airi's transmigrator-city project; Momo eventually deduces Airi's connection to Fang Zheng. 3318 3364

Story Role / Major Arcs

Hogwarts system test

Airi enters the wizarding world as Fang Zheng's test avatar, gains admission to Hogwarts, and rapidly subverts its expected events. She kills Quirrell before the original conflict can unfold, becomes the Defense Against the Dark Arts teacher, and teaches students that wizards are physically vulnerable without their magic. 2381 2382 2385

She later aligns Muggle-born and half-blood wizards with outside government interests, exposes the weakness of the existing magical order, rescues Sirius Black indirectly, and participates in the final defeat of Voldemort. 2400 2410

Fourth True Ancestor awakening

After arriving in the Demon Special Zone, Airi protects Nagisa while investigating the Fourth Gozo Ruins. She awakens as the Fourth True Ancestor, gains access to the former ancestor's Familiar Beasts, and becomes a destabilizing new force among the True Ancestors. 2421 2427 2428

Kagami Island and Sector 9

Airi establishes Kagami Island as her territory, confronts Vatra and the other True Ancestors, defeats God-made Weapons, and rebuilds the destroyed Sector 9 into a technologically independent private island. 2440 2443 2445

After defeating the three True Ancestors' combined assault, she escalates from territorial ruler to geopolitical power by deploying Shigra's Radiance against the Pacific Seventh Fleet. 2466 2477

Shadow Time investigation

Airi joins the investigation into Shadow Time and the Late Night TV incidents, working alongside S.E.E.S., Persona users, and the Phantom Thieves. She uses Legilimency, hacking, physical weaponry, and direct investigation to uncover the Cognitive Science project and Ikutsuki Shuji's attempt to summon Nyx. 2483 2500 2511

She then dismantles the Artificial Island Management Company's conspiracy, takes complete control of Kagami Island, and repurposes the Holy Annihilation legacy as infrastructure for the Transmigrator Project. 2510 2511

Seven Great Labyrinths and the Imaginary Tree

In a world populated by transmigrators and reincarnators with erased memories, Airi founds a city intended to shelter transmigrators and begins conquering the Seven Great Labyrinths for Age of Gods Magic. 3318 3324

She accepts Little White as a disciple, trains the Divine Envoys through brutal survival exercises, defeats rival powers, and eventually enters the Imaginary Tree's Divine Domain. 3322 3341 3369

After defeating the Imaginary Tree, Airi migrates her world to stabilize its collapsing core and lets the reincarnators choose whether to return home or remain in their new lives. 3370

Notable Quotes

“Only naive children act in the name of justice. For me, I simply act according to my principles.” 2452

“In this world, the one with the strongest fist makes the rules.” 2480

“Die.” 3366