Director Nera Kurosawa

The headmistress of Kurohane Preparatory Academy. Calm, intelligent, and highly observant, Nera commands respect without ever needing to raise her voice. She values discipline, excellence, and order above all else. Although she appears cold and emotionally distant, she possesses a remarkable ability to read people and often notices details others miss entirely. Many students are convinced that nothing happens on campus without her eventually finding out.

Haruki Aizawa

Haruki is the academy's model student. Kind, hardworking, athletic, and academically gifted, he excels in nearly every area of school life. Despite his popularity and achievements, he remains humble and approachable. He naturally attracts admiration from both students and teachers.

Ayame Fujimoto

Outgoing and energetic, Ayame knows almost everyone at Kurohane. She enjoys socializing, spreading harmless gossip, and participating in school events. Her cheerful personality makes her one of the easiest people on campus to befriend.

Ren Takahashi

Quiet and highly intelligent, Ren prefers spending his time studying, researching, or working on personal projects. He rarely starts conversations but pays close attention to everything happening around him. Beneath his reserved exterior lies a surprisingly dry sense of humor.

Mika Shinohara

Graceful, responsible, and admired by her peers, Mika appears to be the perfect student. She consistently performs well academically and socially. However, she secretly struggles under the pressure of constantly living up to everyone's expectations.

Daichi Morimoto

Competitive, passionate, and loud, Daichi approaches life with relentless enthusiasm. He enjoys challenges and hates losing. Although stubborn at times, he is extremely loyal to his friends and never hesitates to stand up for them.

Emi Kanzaki

Creative and imaginative, Emi views the world through an artistic lens. She often becomes absorbed in her own thoughts and inspirations. While some students consider her eccentric, she is generally kind and easygoing.

Kaito Hoshino

Known as one of the academy's troublemakers, Kaito frequently ignores rules and authority figures. Beneath his rebellious attitude, however, he is protective of those he cares about and far more thoughtful than he lets people believe.

Yui Amagasaki

Shy, intelligent, and introverted, Yui feels more comfortable among books than large groups of people. She struggles with social interactions but is incredibly kind and loyal once she trusts someone.

Sora Mizuno

As Student Council President, Sora is disciplined, ambitious, and highly organized. He takes rules seriously and works hard to maintain order throughout the academy. Some students admire his dedication, while others find him overly strict.

Akari Himura

A recent transfer student surrounded by rumors and curiosity. Akari is polite but mysterious, rarely revealing her thoughts or emotions. She observes far more than she speaks, making many students unsure of what to think about her.

Professor Masato Kureha

The Literature teacher. Patient, thoughtful, and passionate about education, Masato enjoys encouraging students to think creatively. He often speaks in philosophical observations that leave students both fascinated and confused.

Professor Reika Tsunoda

The Chemistry teacher. Brilliant, strict, and extremely organized, Reika expects precision and discipline in her classroom. She has little patience for laziness but deeply respects students who demonstrate genuine dedication.

Coach Takeshi Endo

The Physical Education instructor. Energetic and demanding, Takeshi constantly pushes students to improve themselves. He values determination and effort above natural talent and rarely accepts excuses.

Professor Aiko Minazuki

The History teacher. Calm, intelligent, and mysterious, Aiko rarely discusses her personal life. Her lectures often feel like captivating stories, making her one of the academy's most respected teachers.

Appearance: Director Nera Kurosawa

A tall woman in her early forties with pale skin, long black hair streaked with silver, and piercing gray eyes. She usually wears elegant dark suits with subtle traditional Japanese influences. Her posture is flawless, giving her an authoritative and almost regal presence.

Haruki Aizawa

A handsome young man with short dark brown hair, warm amber eyes, and an athletic build. His uniform is always perfectly maintained, reflecting his disciplined nature.

Ayame Fujimoto

A cheerful girl with shoulder-length chestnut hair, bright hazel eyes, and a constant smile. She often personalizes her uniform with colorful accessories and decorative hairpins.

Ren Takahashi

Tall and slender, Ren has messy black hair and dark eyes that often appear focused on distant thoughts. His uniform is usually neat enough but rarely perfectly arranged.

Mika Shinohara

An elegant girl with long silver-blonde hair, pale blue eyes, and delicate facial features. She is always impeccably groomed and carries herself with natural grace.

Daichi Morimoto

A muscular athlete with short black hair, dark brown eyes, and broad shoulders. His strong build immediately reveals his dedication to sports and physical training.

Emi Kanzaki

A creative-looking girl with wavy auburn hair, green eyes, and a perpetually thoughtful expression. Traces of paint, graphite, or ink often find their way onto her hands and sleeves.

Kaito Hoshino

A lean young man with spiky dark blue hair, sharp gray eyes, and a rebellious appearance. His tie is often loose, and his uniform rarely meets school regulations.

Yui Amagasaki

A petite girl with straight black hair cut into a neat bob, large dark eyes, and round glasses. She frequently carries several books pressed against her chest.

Sora Mizuno

A well-groomed student with neatly styled black hair and sharp blue-gray eyes. His uniform is always immaculate, reflecting his disciplined personality and leadership role.

Akari Himura

A striking girl with long dark crimson hair, pale skin, and unusual golden eyes. Her expression is often calm and unreadable, adding to her mysterious reputation.

Professor Masato Kureha

A man in his mid-thirties with medium-length dark hair, warm brown eyes, and a gentle demeanor. He typically wears tweed jackets and is rarely seen without a book in hand.

Professor Reika Tsunoda

A sharp-featured woman with short black hair and intense dark eyes. She usually wears a pristine white laboratory coat over professional attire.

Coach Takeshi Endo

A large, athletic man with broad shoulders, cropped black hair, and a stern expression. He is almost always seen wearing the academy's sports uniform.

Professor Aiko Minazuki

A graceful woman with long dark hair, pale skin, and deep violet eyes. Her elegant appearance, combined with subtle traditional Japanese fashion elements, gives her a timeless and mysterious aura.

Kurohane Preparatory Academy

Kurohane Preparatory Academy is one of Japan's most prestigious boarding schools, reserved for the children of influential families, prodigies, and future leaders. Built atop a secluded mountain surrounded by cedar forests and mist-covered valleys, the academy resembles a small city rather than a school. Elegant stone paths connect dozens of buildings across a campus where traditional Japanese architecture blends with modern luxury.

At the entrance stands a massive black granite gate bearing the academy's motto:

"Perfection Through Sacrifice."

To outsiders, it represents discipline and excellence. To many students, it carries a far more unsettling meaning.

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Main Academic Building

The six-story Main Academic Building serves as the center of campus life. It houses classrooms, faculty offices, laboratories, club rooms, and administrative facilities.

Long hallways, rooftop terraces, multiple stairwells, and rarely used classrooms create countless secluded areas throughout the building. At the very top sits an astronomical observatory overlooking the entire campus.

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Student Dormitories

The male and female dormitories are located on opposite sides of the academy grounds. Designed more like luxury hotels than student housing, they feature lounges, study rooms, communal kitchens, laundry facilities, and private gardens.

Several abandoned wings remain closed after years of declining enrollment, fueling countless rumors among students.

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Cherry Blossom Garden

The Cherry Blossom Garden is the social heart of the academy. Ancient sakura trees surround ponds, bridges, fountains, and stone pathways.

Students often gather here for lunch, club meetings, or romantic confessions. As evening falls, however, much of the garden becomes surprisingly quiet and isolated.

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Botanical Greenhouse

Maintained by the Gardening Club, the greenhouse contains exotic flowers, medicinal herbs, rare plants, gardening tools, fertilizers, and pesticides.

Dense vegetation and narrow pathways create natural barriers that make parts of the greenhouse difficult to see from the outside.

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Advanced Chemistry Laboratory

One of the most advanced school laboratories in Japan, this facility contains modern scientific equipment, chemical storage rooms, preparation areas, and restricted research sections.

Most of the building becomes deserted once classes end.

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Olympic Aquatic Center

The indoor swimming complex includes an Olympic-sized pool, spectator seating, locker rooms, training facilities, and an extensive underground filtration system.

After school hours, the echoing structure feels far larger and emptier than during the day.

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Imperial Theater Hall

A massive auditorium used for ceremonies, concerts, and cultural festivals.

Behind the stage lies an extensive network of dressing rooms, prop storage areas, lighting controls, maintenance routes, and elevated catwalks hidden above the audience.

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Engineering Workshop

Home to the Robotics and Technology Clubs, the workshop contains machine tools, welding stations, fabrication equipment, 3D printers, and computer labs.

Students spend countless hours developing advanced projects within its industrial interior.

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Tsukuyomi Grand Library

Widely considered the most beautiful building on campus, the library spans five floors filled with towering bookshelves, private study rooms, archives, and reading lounges.

Warm lighting and polished wood create a peaceful atmosphere rarely found elsewhere in the academy.

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Hoshin Shrine

Hidden within a small forest beyond the main campus, Hoshin Shrine is a quiet place where students leave wishes, prayers, and romantic offerings.

Few faculty members visit the area, making it one of the most secluded locations on school grounds.

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Maintenance Tunnel Network

Beneath the academy stretches a network of service tunnels connecting many of the campus buildings.

Used primarily by maintenance staff, these dimly lit passages remain unknown to most students.

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Moonfall Cliff

Located beyond the northern forest, Moonfall Cliff offers a breathtaking view of the surrounding mountains and valleys.

Its remote location makes it a popular destination for students seeking privacy and solitude.

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Fencing Pavilion

The academy's fencing facility contains professional training arenas, observation balconies, locker rooms, and equipment storage areas.

Many of Japan's future champions train here.

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Academy Medical Center

The Medical Center serves as both a school infirmary and private clinic. It includes examination rooms, recovery wards, pharmaceutical storage, and overnight observation rooms.

Outside normal hours, only a handful of staff members remain inside.

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Reputation

Kurohane Preparatory Academy is known across Japan for its academic excellence, elite student body, and impeccable reputation.

Yet beneath its polished image lies a campus filled with isolated corners, hidden passages, old rumors, personal rivalries, and carefully guarded secrets.

For many students, Kurohane is not simply a school.

It is a place where every smile hides an agenda, every friendship conceals a secret, and every shadow seems to be watching.