On the 12th of May 2100, a young girl named Kurau Amami stood in a laboratory on her birthday, unaware that a bolt of Rynax energy would erase her from existence and rebuild her as something entirely new. The experiment conducted by her father, Dr. Amami, was meant to unlock the secrets of alternative energy, but instead it triggered a catastrophic fusion between human and alien life forms. What emerged from the light was not the child who had entered, but a composite being carrying two distinct consciousnesses within one body. One Rynax had awakened and claimed Kurau's identity, while the other remained dormant, sleeping inside her like a secret waiting to be told. This event set in motion a decade-long journey of survival, identity, and the desperate search for connection in a world that feared what it did not understand.
The Symbiotic Secret
Rynax were never meant to be energy sources; they were binary life forms from an alternate dimension, designed to exist in pairs. When fused with a human, the result was typically a slow, agonizing death for both parties. Kurau was an anomaly, a rare case where the human and Rynax components coexisted in a symbiotic relationship. This fusion granted her abilities that defied the laws of physics: she could fly, pass through solid matter, generate radiation powerful enough to disintegrate objects, and even reform her body after total dissipation. Yet these powers came at a cost. The world saw her as a threat, and the Global Police Organization, or GPO, hunted her relentlessly. Kurau lived in constant fear of discovery, shunning close relationships to protect the secret that made her both a miracle and a monster.The Awakening of Christmas
Ten years after the accident, the second Rynax finally awakened, emerging from Kurau's body as a twelve-year-old girl who called herself Christmas. Unlike Kurau, Christmas possessed no superhuman abilities, but she had an intuitive understanding of the world that bordered on the supernatural. She could read a cookbook and prepare a full meal on her first day out, learning with a speed that defied normal human limits. Though they looked like sisters and shared Kurau's memories, Christmas was a separate consciousness, a mirror to the Rynax that had taken her form. Their bond was unlike any other, a connection so deep that critics would later call them the most memorable couple in anime, despite having no romantic intent. Together, they navigated a world that wanted them dead, finding solace in each other's presence.The Father's Guilt
Dr. Amami, Kurau's father, was a man broken by his own creation. Wracked by guilt over the accident that had transformed his daughter, he was physically damaged after his own encounter with Rynax force. The GPO forced him to work on a project designed to destroy his own child, a cruel irony that haunted his every waking moment. He was a kind, intelligent man who had once been a pioneer in alternative energy, but now he was a pawn in a game he could not control. His relationship with Kurau was strained by the secret she kept, and his own trauma made it impossible for him to protect her. He was a man who had lost his daughter twice, first to the accident and then to the world that hunted her.