Sera was born heterochromatic but what's different with her is not the color of her eyes but her special ability. She has the ability to read people, their past and other information, all of these seen by her left eye, but she can only get their information from their works, through their handwriting or if they have created something like a work of art. But something happens... Sera can't read Rhiannon's work. Why?

(Source: MangaDex)