The @Oni are a rare and feared race born from the union of @Tiefling and @Human. Their existence is the result of demonic bloodlines mixing with mortal ancestry, producing a powerful hybrid people who carry traces of infernal magic while still appearing mostly human.
Unlike Tieflings, Oni usually have human skin tones—ranging from pale to dark just like ordinary humans. However, their bodies possess unmistakable features that reveal their demonic lineage. Most Oni grow large horns, possess sharp fangs, and have glowing or unusually colored eyes. Their bodies are often taller and stronger than normal humans, with naturally powerful musculature.
Because they resemble humans but carry demonic features, Oni are often seen as something unnatural—neither fully human nor fully demon.
During the Demon Age, Oni were far more common and widely accepted among demon lord territories. Demon rulers saw Oni as ideal soldiers and commanders because they possessed the resilience of Tieflings combined with the adaptability and intelligence of humans.
Oni warriors were known for their immense physical strength and brutal combat style. Many served as generals, enforcers, executioners, or elite bodyguards within demon lord armies.
Their presence on battlefields became legendary. Entire cities learned to fear the sight of horned warriors leading demon armies.
Because of this, the image of the Oni became permanently tied to the tyranny and violence of the Demon Age.
When the Twelve @Saint defeated the demon lords and the Sanctified Cycle began, the world erupted with anger toward anything associated with demonic power.
Tieflings were hunted and nearly exterminated, but the Oni faced an even worse fate.
To the Exodia Inquisition, Oni represented a direct mixing of demonic blood and human blood. They were declared abominations, creatures that should never have existed.
Across many kingdoms, Oni were hunted relentlessly. Entire villages suspected of harboring Oni were burned or purged. Hunters were praised for bringing proof of an Oni’s death, and many inquisitors considered killing them a sacred duty.
Within only a few generations, Oni populations across @Oktoberland and @Dragoon Island collapsed.
The few surviving Oni fled to remote regions where Exodia influence was weaker. The largest surviving communities eventually settled in the mountains of the @Mount Muji.
These harsh mountain ranges provided natural protection against the inquisitors who hunted them.
Oni villages in these mountains live in secrecy, often hidden among cliffs, caves, and high valleys where outsiders rarely travel. Even within the Asio Empire, their presence is often treated with suspicion.
Life in these regions is difficult, but it is one of the few places where Oni can survive without constant persecution.
While many Oni remain hidden, others have found a different path.
The faction known as @Nox Populi has accepted Oni into its ranks. Unlike Exodia, Nox Populi views Oni not as abominations but as powerful allies.
Within Nox armies, Oni often serve as brutes, shock troops, and enforcers. Their natural strength and endurance make them excellent frontline fighters.
For many Oni, joining Nox Populi is not about ideology. It is simply one of the only ways to live openly without fear of immediate execution.
In the current age of the Sanctified Cycle, Oni remain one of the most persecuted races in the world.
Most kingdoms under Exodia Inquisition influence consider them enemies of the divine order. If an Oni is discovered within these territories, they are often killed on sight.
Because they possess human skin tones and can sometimes hide their horns, some Oni attempt to live secretly among human populations. Others refuse to hide and instead live among rebel factions, demon-aligned groups, or isolated mountain communities.
Despite centuries of persecution, Oni have not vanished.
They remain a scattered people—survivors of a long history of fear and hatred—living in the shadows of a world that still remembers the horrors of the Demon Age.