The title uses the Spanish idiom (literally "blue prince"), which is the cultural equivalent of "Prince Charming" or a "knight in shining armor". The series has gained international fame through its Netflix adaptations, including the film Royalteen: Princess Margrethe (2023), which is based on this specific book.

: After a disastrous Halloween party leaves her hospitalized and isolated, Margrethe struggles to maintain her perfect royal facade while longing for a "Prince Charming" (or príncipe azul ) she can actually trust.

The book serves as a "solid guide" to the internal struggles of following a scandalous prom night and her journey through loneliness, family pressure, and the quest for a genuine connection. Book Overview

El príncipe azul is the second installment in the popular young adult book series by Anne Gunn Halvorsen and Randi Fuglehaug.