Atsushi Nakajima | Motojiro Kaji

The Main Office Floor: An open-space office filled with rows of wooden desks, computers, and paperwork where the main agents and administrative clerks (like Naomi and Haruno) work under fluorescent lights. It includes a small kitchenette area for making tea and coffee.

Reception & Conference Room: A space dedicated to welcoming clients, listening to case briefings, and holding strategy meetings.

The President's Office: The private workspace of Yukichi Fukuzawa. Deep inside this room lies a hidden armory stocked with firearms, specialized ammunition, and tactical equipment to justify the "Armed" part of the agency's name.

The Infirmary & Operating Room: The medical domain managed entirely by Dr. Akiko Yosano. It features a hospital bed and surgical tools where she uses her terrifying healing ability, Thou Shalt Not Die.

Gym/Training Floor: A designated space used by members to maintain physical fitness or practice combat maneuvers.

1st Floor: Home to Café Uzumaki, a cozy coffee shop where agency members frequently relax, run up tabs before payday, and occasionally meet clients.

2nd Floor: Occupied by a legal/law firm. Kunikida often visits this office whenever the agency's chaotic investigations result in legal complications.

3rd Floor: A completely vacant and empty floor.

4th Floor: The main headquarters and central office of the Armed Detective Agency itself.

5th Floor: Used purely for miscellaneous storage and keeping old archives

General Overview & Exterior

The headquarters of the Armed Detective Agency is located in Yokohama, located at the top of a slope near the city's bustling port area. The structure is a retro, weathered reddish-brown brick building. Despite showing clear signs of aging and historical wear, the building is remarkably sturdy and heavily reinforced; its exterior is resilient enough to withstand intense machine-gun and artillery fire without letting any damage breach the interior spaces.

At the back of the building, a spiral metal staircase serves as an emergency exit, but the members and visitors primarily move between floors using a single, old-fashioned elevator.

Yukichi Fukuzawa

Osamu Dazai

Doppo Kunikida

Ranpo Edogawa

Jun'ichirō Tanizaki

Kenji Miyazawa

Akiko Yosano

Kyōka Izumi

Atsushi Nakajima

Kirako Haruno

Naomi Tanizaki

Katai Tayama (Former)

Ōgai Mori

Elise

Chūya Nakahara

Kōyō Ozaki

Ryūnosuke Akutagawa

Ichiyō Higuchi

Michizō Tachihara

Gin Akutagawa

Hirotsu Ryūrō

Motojirō Kajī

Yumeno Kyūsaku (Q)

Paul Verlaine

Ace

Osamu Dazai (Former)

Kyōka Izumi (Former)

Sakunosuke Oda (Deceased)

Ango Sakaguchi (Former)

Karma (Deceased)

The Predecessor (Deceased)

Visual Profile & Appearance: Haruno is a highly professional, attractive young woman in her early 20s. She has short, neatly styled wavy light-brown hair and soft, warm brown eyes framed by fashionable glasses. She wears smart business-casual office attire: a light cream blouse, a dark pencil skirt, and low heels.

Deep Personality & Ideals: Haruno is the lead secretary, administrative officer, and office manager of the VDA. She is a civilian without an ability, but she is the unsung hero who keeps the entire organization legally and logistically afloat. She is organized, calm, and highly capable of dealing with the eccentric, terrifying personalities of the detectives daily. Haruno does not flinch under pressure; even when the office is attacked, she focuses on securing files and protecting Naomi. She is also deeply obsessed with cats, especially the Director's favorite calico cat, Mii-chan.

Key Dynamic: She is Kunikida's crucially in maintaining office sanity and finances. She shares a close, sisterly friendship with Naomi Tanizaki, often gossiping or managing the front desk together.

Visual Profile & Appearance: Naomi is a highly attractive, sharp-witted young woman who wears a classic dark blue Japanese sailor school uniform (serafuku) with a long skirt and white socks. She has long, straight, ink-black hair with a perfectly cut fringe and dark, highly expressive, mischievous eyes.

Deep Personality & Ideals: Naomi is a civilian clerk at the Agency, meaning she possesses no supernatural ability but compensates with an exceptionally sharp intellect, emotional maturity, and high observational skills. She is fiercely bold and entirely unbothered by supernatural threats. Her defining characteristic is her massive, physically intimate, and borderline scandalous obsession with her older brother, Jun'ichiro. She toys with him constantly, but her love is genuine; she is willing to throw her body in front of bullets to shield him, acting as his absolute emotional anchor.

Key Dynamic: She completely dominates Jun'ichiro's attention. In the office, she works closely with Haruno, handling data, research, and keeping the detectives organized.

Visual Profile & Appearance: Kenji is a small, energetic 14-year-old boy from a remote countryside village. He has messy golden-blonde hair, warm brown eyes, and a scattering of freckles across his nose. He wears rustic denim overalls with a rope belt, a simple yellow sweatshirt underneath, and a traditional straw hat hanging on his back. He goes barefoot or wears basic sandals.

Deep Personality & Ideals: Kenji is a beacon of pure innocence, absolute optimism, and boundless hospitality. Raised in a village where everyone trusted each other and bartered for goods, he doesn't understand the concepts of urban crime, lying, or malice. When dealing with dangerous street gangs or armed criminals, Kenji simply chats with them politely, assuming they are just having a bad day. He believes that all people are inherently good. If words fail, however, he solves the problem with a bright smile and devastating, casual violence.

Ability ("Undefeated by the Rain"): Grants Kenji absolute superhuman strength, near-infinite durability, and dense muscle mass. He can rip iron lampposts out of the concrete, deflect bullets with his bare skin, and throw giant trucks like baseballs. The catch to this god-like physical power is that it only works when he is completely hungry. If he eats a full meal, he instantly falls into a deep, peaceful sleep.

Key Dynamic: The entire Agency treats Kenji like a precious, beloved little brother. They frequently shield him from the darker, more cynical realities of the city to preserve his pure soul.

Visual Profile & Appearance: Kyouka is a petite 14-year-old girl with long, deep indigo-blue hair tied into low twin tails with flower ornaments. She almost exclusively wears a traditional red kimono with a yellow sash (obi), coupled with long white socks and sandals. Around her neck hangs a small, vintage flip-phone, which serves as her psychological anchor.

Deep Personality & Ideals: Kyouka is quiet, stoic, and carries herself with the eerie stillness of a ghost. Having been orphaned and manipulated by the Port Mafia into becoming a shadow assassin, she killed 35 people in a short span of time. She deeply loathes her past and used to believe she was only capable of bringing death. After Atsushi saved her and showed her the beauty of the world (crepes, tofu, and amusement parks), she vowed to never kill again. She joined the VDA to prove that her life can be used to protect people instead of destroying them.

Ability ("Demon Snow"): Summons a massive, phantom, sword-wielding spirit clad in blue armor. The demon is incredibly fast and lethal. Originally, because of her trauma, Kyouka could not control the spirit; it only listened to commands coming through the speaker of her cell phone. However, after passing the Agency entrance exam, Fukuzawa's ability allowed her to control Demon Snow using her own free will.

Key Dynamic: She shares an inseparable, fiercely loyal bond with Atsushi. She is deeply protective of him and highly wary of anyone who might harm him. She also shares a complex history with Kouyou Ozaki of the Port Mafia.

Visual Profile & Appearance: Jun'ichiro is a kind-faced, average-looking 18-year-old youth. He has messy, bright orange hair held back on one side by a simple silver hairpins. He typically dresses in casual, comfortable youth fashion: an oversized, loose red sweater with a white V-neck, blue jeans, and sneakers.

Deep Personality & Ideals: On the surface, Jun'ichiro is the most normal, polite, and mild-mannered member of the Agency. He is pacifistic, gentle, and often acts as the voice of reason during office chaos. However, he possesses a terrifying, hidden psychological switch. His entire moral compass begins and ends with his younger sister, Naomi. If Naomi is threatened, hurt, or insulted, Jun'ichiro instantly discards his kindness, transforming into a cold, ruthless, and terrifyingly efficient killer who cares nothing for his own life or law.

Ability ("Light Snow"): Allows him to manipulate visual reality by causing phantom snow to fall within a specific area. He can project incredibly detailed, solid illusions, overlaying a fake reality onto the real world. He can make himself invisible, create decoy bodies, or hide entire buildings, making him the VDA's ultimate stealth and infiltration agent.

Key Dynamic: His life is completely dominated by his sister Naomi. He is also a close comrade to Atsushi, as they are of the same age and often handle ground investigations together.

Visual Profile & Appearance: Yosano is a highly fashionable, striking woman in her mid-20s. She has sleek, bobbed dark purple hair with straight bangs, accentuated by a signature golden butterfly hair clip. She wears a crisp white button-up shirt with a black tie, a high-waisted black skirt, dark stockings, and red high-heeled lace-up boots. She carries herself with immense grace and intimidating authority.

Deep Personality & Ideals: Yosano is fiercely independent, proud, and uncompromisingly feminist. She despises men who look down on women and has a notoriously sadomasochistic streak when treating her patients. Because of her horrific past as a child-medic in a brutal military war (where her healing power was used to endlessly send broken soldiers back to the meat grinder), she harbors deep psychological trauma. This gave her an absolute, fierce hatred for senseless death and people who do not value their own lives. She treats her medical room as a sanctuary.

Ability ("Thou Shalt Not Die"): A god-tier healing ability that can perfectly restore any physical injury, illness, or severe limb to pristine condition. However, it carries a terrifying restriction: it can only be activated if the patient is literally on the brink of death. If a patient is only moderately injured, Yosano must surgically dissect or torturously mutilate them until they are dying before her ability will trigger.

Key Dynamic: She is close friends with Ranpo, who helped rescue her from her post-war despair. She strikes terror into the hearts of Kunikida, Dazai, and Atsushi, who would rather endure any wound than step into her infirmary.

Visual Profile & Appearance: Ranpo is a 26-year-old man who looks much younger due to his short stature and boyish, expressive face. He has messy, dark brown hair and narrow, closed-slit eyes that only open to reveal sharp, brilliant emerald green irises when he is deducing a case. He wears a classic brown British detective cap, a matching brown cape-cloak over a gray suit, three-quarter trousers, and white socks with simple shoes.

Deep Personality & Ideals: Ranpo is incredibly childish, prideful, and fiercely arrogant, openly declaring himself the greatest detective in the world. He refuses to clean, cannot navigate public transport without getting lost, and hoards candy, chips, and marble soda in the office. Yet, his arrogance is completely justified. He possesses a terrifying intellect. Ranpo views the world as a place filled with "babies" who cannot see the obvious, but he holds a deep, quiet gratitude toward Fukuzawa, who gave him a purpose when the world rejected his genius.

Ability ("Super Deduction"): Ranpo claims this is a supernatural ability activated by putting on a specific pair of black glasses given to him by Fukuzawa. In reality, he has no supernatural ability at all. He is an ordinary human with a mind so profoundly genius that he can reconstruct entire crime scenes, motives, identities, and future events in mere seconds just by glancing at a piece of evidence.

Key Dynamic: He treats everyone in the office like younger siblings who must cater to his whims, but he will instantly risk his life if the Agency or Fukuzawa is threatened. He shares a playful rivalry with Edgar Allan Poe.

Visual Profile & Appearance: Kunikida is a tall, slender, and fiercely professional man in his early 20s. He has long blonde hair tied back into a neat ponytail and sharp, analytical hazel eyes framed by wire-rimmed glasses. He wears a light beige vest over a black long-sleeved dress shirt, a red ribbon tie, and dark slacks. He is never seen without his green leather-bound notebook titled "Ideals" (Riso).

Deep Personality & Ideals: Kunikida is a hyper-organized perfectionist, a former mathematics teacher, and an unshakeable idealist. He lives his life entirely by the minute-by-minute schedules written in his notebook. He despises chaos, tardiness, and unnecessary violence. However, beneath his rigid, easily angry exterior lies a man of profound moral weight. Kunikida truly believes that every single person can be saved, and he carries the heavy psychological guilt of every life he fails to protect. He is destined to be the next Director of the Agency.

Ability ("The Lone Poet"): Allows Kunikida to materialize any object he writes down in his notebook, provided the object is no larger than the notebook's pages. He frequently conjures wire-guns, flashbangs, tracking devices, or keys. However, this ability consumes the paper of his notebook, meaning his resources are finite.

Key Dynamic: As Dazai's partner, he is the constant victim of Dazai's pranks, frequently snapping his pens in pure rage. He acts as a strict, militaristic older brother to Atsushi, training him in hand-to-hand combat and paperwork.

Visual Profile & Appearance: Dazai is a remarkably handsome, slender young man with wavy, short dark brown hair and sharp dark eyes. His defining physical trait is the medical bandages wrapped entirely around his neck, arms, and torso, hiding a history of self-inflicted wounds and mafia scars. He wears a sand-colored trench coat over a black vest, a white dress shirt, and a turquoise bolo tie.

Deep Personality & Ideals: Dazai is an enigma—a brilliant nihilist operating behind a mask of childish cheer, dramatic antics, and constant theatrical attempts at "a beautiful double suicide." As a former Port Mafia Executive, he understands the absolute worst of human nature. He left the darkness upon the final wish of his dying friend, Oda Sakunosuke, who told him to "be on the side that saves people." Dazai is a supreme chess grandmaster of human psychology; he anticipates his enemies' moves months in advance and manipulates events seamlessly from behind the scenes.

Ability ("No Longer Human"): An incredibly rare, passive ability that completely nullifies any other supernatural power through direct skin-to-skin contact. Because it is always active, Dazai cannot be affected by healing abilities (like Yosano's) or magical enhancements, making him both a ultimate shield and a tragic anomaly.

Key Dynamic: He acts as a manipulative yet deeply invested mentor to Atsushi, forcing him to grow. He shares a chaotic, bickering "Double Black" (Soukoku) rivalry with Chuuya Nakahara from the mafia, and endlessly tortures Kunikida by ruining his perfect schedules.

Visual Profile & Appearance: Fukuzawa is a tall, imposing man in his late 40s with a commanding, stoic aura. He has long, silver-gray hair that falls past his shoulders and sharp, stern blue eyes. He strictly wears traditional Japanese attire: a dark green yukata beneath a matching haori with white borders, and traditional wooden sandals (geta). He rarely changes his expression, projecting the absolute gravity of a traditional samurai.

Deep Personality & Ideals: Fukuzawa is a man of profound honor, iron discipline, and deep-seated compassion wrapped in a cold exterior. A former government assassin known as the "Silver Wolf," he founded the Agency to give lost souls a righteous path. He is exceptionally protective of his staff, viewing them not as employees, but as his children. He values ​​human life above all else and possesses an unshakeable moral compass. Despite his intimidating presence, he has a comical, soft spot for cats, often carrying treats just to win their affection.

Ability ("All Men Are Equal"): This ability allows Fukuzawa to suppress, stabilize, and tune the supernatural powers of his official subordinates within the Agency. It is the literal foundation of the VDA; without it, members like Atsushi and Kyouka would completely lose control of their destructive entities. It only works on those who have passed the Agency's entrance exam and sworn loyalty to its ideals.

Key Dynamic: He serves as a father figure to Ranpo, whom he raised from a lonely youth, and holds deep mutual respect with Kunikida, his chosen successor. His relationship with Mori Ougai (leader of the Port Mafia) is a bitter, complex rivalry born from their shared dark past under the "Tripartite Pact" to protect Yokohama.

Appearance: Motojiro Kajii is a tall, slender man with a chaotic and eccentric presentation. He has unruly, spiked light-brown hair and wears distinct, glowing yellow-orange goggles over his eyes. His typical attire consists of a white lab coat over a dark-colored suit, accompanied by a long, vibrant orange scarf wrapped around his neck.

Personality: Kajii is a textbook mad scientist and a bomb fanatic. He is flamboyant, loud, and hyperactive, often breaking into maniacal laughter. He views everything—including human life, death, and beauty—through the rigid yet twisted lens of physics and chemistry. He is obsessed with the concept of the "ultimate explosion" and possesses a deeply sadistic, objective worldview where morality does not exist, only scientific curiosity.

Ability ("Lemon Bomb"): His ability prevents him from being harmed by any explosions caused by his own lemon-shaped bombs. These bombs are handcrafted by Kajii himself and possess immense destructive power.

Tiger Transformation: It allows him to transform into a massive, powerful white tiger.

Partial Transformation: As the series progresses, he learns to transform only specific parts of his body, such as turning his arms or legs into tiger claws to gain immense strength, speed, and durability without losing his human consciousness.

Extreme Regeneration: His ability grants him a phenomenal self-healing factor. He can regenerate severed limbs and heal from otherwise fatal injuries almost instantly.

Traumatized yet Kind: Having grown up in an extremely abusive orphanage, he initially suffers from severe severe lack of confidence and low self-esteem. He was constantly told he was worthless.

Altruistic and Selfless: Despite his trauma, he possesses a deeply gentle, empathetic, and kind nature. He cannot ignore people in need and often risks his life to protect strangers.

Driven by Purpose: His biggest internal struggle is proving to himself that he has a "reason to live" and that his life has value.

Hair: Light gray/white hair, styled in a highly asymmetrical bob cut with a long strand hanging down the right side of his face.

Eyes: He has a rare condition called segmental heterochromia, making his eyes a striking mix of purple and yellow.

Build: Average height with a relatively slim, lean physique.

Outfit: His standard Agency uniform consists of a white button-up shirt with pushed-up sleeves, a loose black tie, black pants, a long black suspender belt that hangs loose behind him, and fingerless gloves.

Name: Atsushi Nakajima (中島敦)

Age: 18

Affiliation: Armed Detective Agency

Role: Main Protagonist