The award-winning author Marta Sanmamed is a plastic artist, writer, and cartoonist from Madrid and has exhibited not only in Spain but also in the US and Europe, and her work is part of prominent Museums and Private Collections. For over a decade, she has been committed to Residualism to "create from waste without generating more waste" and within this movement are vertical Giardinos, woven from reused plastic bags. She firmly believes that Residualistic Art is the reflection of the human awakening towards a conscious, compassionate, understanding, honest, grateful, and respectful way of life with nature and tries to dignify creativity aimed at the preservation of our ecosystem. Her book Cyparissus (Cuento de Luz, 2015) has been translated into more than five languages and has been awarded by the prestigious IPPY AWARDS, Living Now Books Awards, and the International Latino Book Awards.

Mar Azabal is a graduate in Geography, specialising in Administration and archive conservation. Her real dream was to create stories through drawing and illustration. She currently lives in Toledo, Spain, and spends her time teaching illustration courses for children, creating stories, and enjoying raising her little child. In 2018 he illustrated the picture book Ayobami and the Names of the Animals (Cuento de luz, 2018), which won the Silver Medal at the 2018 Moonbeam Children's Book Awards and Gold Medal at the International Latino Book Awards.