The demon Yukie holds the world in Eternal Winter, feeding on human lives across uncounted years. Long ago, the First Man was drawn from the realm of story by Yukie herself — they loved each other, but the man vanished, and the grief curdled into madness. Yukie's children carry her power in their blue eyes. Generation after generation, those heirs have tried to kill her and failed. Yukiji is the last of the line, the youngest and final avenger. The mountain awaits.