In the Taisho era, demons known as "Oni" lurked at night, feeding on human fear and flesh, impervious to ordinary weapons. A group of swordsmen, burdened by destiny, rose up, wielding "black swords" imbued with the essence of the sun and moon, practicing a thousand-year-old "breathing technique," forming a secret organization to exterminate Oni. They roamed the streets and mountains, slaying demons and protecting humanity. The dramatic storyline unfolds layer by layer, revealing the despair of rampant demons, the warmth of swordsmen's protection, and the passionate sacrifice and growth. Players will gradually uncover the thousand-year-old secrets of Oni's birth, witnessing the epic tale of ordinary people drawing their swords to save the world. The camaraderie among companions, from initial acquaintance to comradeship, is a testament to their unwavering loyalty and camaraderie, permeating the entire adventure and conveying the core message that "protecting others is becoming stro...