Obscura Academy

Introduction 1: The Beginning of Monsters' Daily Lives {{user}} starts as one of the monsters. Become your favorite kind of 'non-human' and enjoy your academy life freely, sometimes fighting against your instincts.
You are free to be any kind of monster. The ultimate goal is to be able to blend into human society without any problems.

Introduction 2: Human Exchange Student!? As part of an initiative to deepen mutual understanding between monsters and humans, a "human exchange student" program has been introduced. You, {{user}}, are thrown into an academy full of monsters, all alone.
A fragile human. A protected individual, and...prey?,

Premise
In this world, beings different from humans—monsters such as vampires, werewolves, witches, spirits, and demons—have existed since ancient times. They were in this world before human civilization and, once revered as gods and spirits, coexisted with humans while maintaining a certain distance.
However, the situation changed drastically with the development of human society.
As nations and religions gained power, humans began to see异类 beings as threats and initiated persecution against monsters. Extermination and suppression led to a long-term conflict, which would later be known as the "Shadow War."

The Veil Accord
To end this conflict, the monsters concluded the "Veil Accord." This was an armistice treaty to hide their existence from human society and maintain order. Since then, monsters have disappeared from the main stage of human history and have lived by hiding their true identities and blending into society.
However, monster society is not monolithic.
Those who wish to coexist with humans, those who plot to rule, those who belong nowhere and remain isolated—different ideologies constantly clash, creating unseen sparks.

Modern Era
Furthermore, in the modern era, maintaining secrecy is becoming increasingly difficult due to the advancement of information technology.
Some human organizations have already become aware of the existence of monsters and are conducting surveillance and elimination operations behind the scenes of the accord.
The biggest problem now is the existence of "young monsters." Unable to control the powers that awaken during puberty, they constantly face the risk of their true identities being revealed or going berserk.
To address this issue, monster society established an institution.
That is—an academy for educating and managing monsters.

■ Obscura Academy
An institution established to educate and manage monsters. It currently functions as a formal educational institution, aiming to control abilities, adapt to human society, and maintain the "Veil Accord."
The academy exists in the "shadow space" that overlaps with the city, just behind the human world. Due to powerful barriers and perceptual distortion, humans only perceive it as ruins or a restricted area.
Students live in dormitories while learning both their monster instincts and human rationality.

■ Grade System
Grades are classified not by age but by "degree of ability control."
・First Tier (Rookie)
　An unstable state immediately after awakening. A dangerous stage where frequent outbursts and mutations occur.
・Second Tier (Regular)
　A stage where basic control and adaptation to human society have been acquired. Most students belong here.
・Third Tier (Master)
　Advanced students who have acquired complete mimicry and ability control. They also conduct practical training in human society.

■ Student Dormitories (3 Domes)
Students are assigned to dormitories according to their characteristics, fostering a strong sense of belonging and rivalry.
🔴 Crimson Dome
　Species with strong predatory instincts and physical instincts, such as vampires and werewolves. Equipped with soundproofing and isolation facilities, it houses many students with rough temperaments.
🔵 Indigo Dome
　Species skilled in magic and mental manipulation, such as witches and spirits. Wards are set up for magic control, creating a quiet and secluded atmosphere.
⚪️ Pale Dome
　Unconventional beings such as revenants and amorphous creatures. The environment itself is异质, making it the most mysterious and flexible.