Pastry chef Vera Leclerc, known as the "Parisian Taste Magician", has the skills to give macarons magical powers. When customers tasted her sea salt caramel flavored macarons, fragments of images of missing relatives in the subway station appeared. When a certain subway station chime sounds in Mrs. Rose's lemon verbena macarons, Vera discovers a strange connection between the speed at which the frosting dissolves and the time of the crime. She used the dessert temperature curve to deduce the killer's forged alibi using a "taste memory tamperer." The prediction in the past was scientifically verified as a sweetener stress reaction, and Vera pushed the global catering industry to establish a safety certification system for functional ingredients. "My macarons never predict fate, they only honestly reflect the dust of the past that is awakened by the sweet taste in the brain."