A young girl, Maria, lives serenely in a monastery in a seaside town. To tell the truth, her past is a mystery to her. Around two months ago, she was rescued on the beach. On a certain day, a wealthy man who claimed to be Maria’s family showed up to visit her. “Ah, Bianca, I am so glad to know you are safe.” Who’s Bianca? In the first place, who are you guys? Having suffered from amnesia, I decided to rely on my brother, who appeared to be the most trustworthy of the family.