Tensei Seijo wa Oshikatsu ga Shitai! Shiitagerare Reijou desu ga Oshi no Oujisama kara Dekiai Sareteimasu!?

Synopsis

Who would have thought my idol would adore me?! A Cinderella story of an oppressed young lady! After an accident while pursuing her idol, the protagonist is reincarnated as the daughter of a duke, Elysia. Because of her black hair and eyes, she is scorned and labeled the "daughter of evil." Hiding her saintly powers and determined to live in the shadows, Elysia is rescued by Crown Prince Reichelt at the royal castle. "I've found my idol, even in this world!" To earn money from her idol activities, she secretly starts working as a magician, and then a man with the exact same voice as Reichelt shows up at her shop!She's so focused on pursuing her idol that she doesn't notice his affection for her?! A Cinderella love story of an oppressed young lady! (Source: Kadokawa, translated)