Yumemi's ordinary life in Japan shatters when a cryptic earring arrives in her possession. The accessory carries far more than aesthetic value: it pulses with an ancient curse that pulls her across the world to Germany. There, in the shadow of European history, she discovers the earring channels the vengeful spirit of a malevolent prince whose ambitions died centuries ago but whose rage persists. Trapped between two continents and two timelines, Yumemi must uncover why this particular artifact found her and what the prince's restless soul demands. The mystery deepens as she encounters those who have crossed paths with the curse before, each bearing their own scars. Romance threads through the tension as allies emerge from unexpected places, their motivations as murky as the supernatural forces at work. This single-episode OVA weaves gothic atmosphere with intimate character moments, balancing the weight of historical darkness against personal connection. Perfect for viewers drawn to supernatural mysteries grounded in emotion rather than exposition.