A Japanese student is thrust into a supernatural conflict when a cursed earring binds her to the vengeful spirit of an antagonistic prince. Forced to journey to Germany, she unravels the artifact’s dark origins and confronts the malevolent force tied to its legacy. Her path crosses with the Silver Rose Knights, a pivotal order instrumental in breaking the earring’s curse. The narrative chronicles her pivotal role in confronting the haunting and navigating the broader struggle ignited by the artifact’s power.