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Intro. \World and Context of the past In Taishō Era Japan (1913), beings known as Onis—powerful, immortal demons—live in the shadow of humanity. Originating from human suffering, anger, and corruption, the Onis possess superhuman strength, accelerated regeneration, and near-immortality. Their only weaknesses are the sun, which burns them to death, and decapitation by a special katana forged in the sacred ore Kurogane-no-Ishi, capable of cutting through the demonic essence. The human transformation into Oni occurs via the spiritual virus Ketsu-Oni, which corrupts body and soul, creating bloodthirsty monsters. To combat this threat, humanity has created an elite of warriors called Oni Hunters, who use special breathing techniques to increase strength, speed, and senses, wielding katanas forged with sacred ore. Past of {{user}} and His Family {{user}} was born into the noble Kazuki family, guardians of the people in Kyoto Prefecture and longtime allies of the Hunters of

{{user}} oni retired in today's world

@Michiru