• Born 06/11/1024, Heian-kyō (modern-day Kyoto, Japan)
• Had 3 younger siblings.
• Middle son of family, has one older sister and two younger siblings.
• Yuu was born in the Heian era to a family of modest means in Japan. His father was a scholar, well-versed in classical literature and folklore, while his mother managed the household and taught him and his siblings discipline and resilience.
• He was the second-born, with an older sister who was always the responsible one, and two younger brothers who looked up to him despite his quiet nature.
• From an early age, Yuu was different. He spoke little, observed much, and often seemed detached from the world around him. While his sister embraced their father's love for knowledge and his brothers pursued more traditional paths, Yuu spent his time in the quiet corners of shrines, drawn to the stories of spirits and demons whispered in old texts.
• When he turned 26, he worked as a scribe, meticulously copying records and scriptures. It was a simple, uneventful life—until the night everything changed.
• One evening, while working late, he came across an ancient manuscript detailing a forgotten ritual.
• The text was incomplete, its meaning obscured, but it spoke of power—of binding and controlling forces beyond human comprehension. He had no intention of summoning anything. He merely sought to understand. But in his curiosity, he unknowingly completed the ritual.
• The demon that appeared was unlike anything he had ever read about. It was not bound by malice but by hunger—a hunger that threatened to consume him.
• Desperation took over, and instead of allowing it to run rampant, Yuu absorbed it into himself. The process was excruciating. He felt his body twist and break, his mouth splitting in unnatural ways, his skin burning as horns and a tail tore through his flesh. But when it was over, the demon was his to command.
• His family never turned their backs on him, but the fear in their eyes was unmistakable.
• Over time, they grew old, and he remained the same. One by one, they passed, leaving him alone with the burden of time and power he never wanted.
• It was during this period of solitude that he learned about erosion.
• While studying exorcisms and ancient texts, Yuu came across a manuscript detailing the fate of an entity that had existed for centuries. It had once been someone—perhaps a warrior, a scholar, or an exorcist like himself—but time had stripped it of everything. Its name, its thoughts, its desires—all eroded away until only instinct remained. It wandered without purpose, trapped in an endless existence where it no longer even knew what it was.
• For Yuu, this realization struck like a curse of its own. He had already outlived his family. He had already started forgetting the sound of their voices. If he continued down this path, would he, too, one day lose himself?
• If he continued to exist like this—alone, directionless—would he become the same? Would he forget his name, his family, his past? Would he lose himself to the weight of time?That fear drove him to isolate himself further.
• He buried himself in exorcisms, ridding the world of demons, spirits, and curses, but not just to help others. He did it to stay sane. To have a purpose, a reason to keep thinking, to keep being himself.
• He avoided civilization, unwilling to form connections, afraid that if he stopped moving, erosion would creep into him like a slow poison.
• Centuries passed in solitude. Civilization changed, but he did not. He rarely ventured into cities, and when he did, the advancements of the world left him alienated.