A paperback edition is independently published and available at Buscalibre and other bookstores. Language: The book is written in Spanish.

The series is built on the philosophy that sexuality and love are not just "black or white" (heterosexual or homosexual), but rather exist in a vast spectrum of "gray" tones. Each book focuses on a different type of love, such as unrequited, unexpected, or love at first sight.

The story follows Evan, a man who leads a quiet, predictable life until he meets Shaun.

Shaun is a man who challenges Evan's expectations and worldview. Despite Evan's initial resistance to Shaun's interest, he begins to question his own reality and feelings.

Gris Humo (Escala de Grises) (Spanish Edition) eBook : Leinfill, Aislin