Inês Viegas Oliveira was born in Tavira, Portugal, in 1995. She studied physics and math, before changing course and studying illustration. In 2020, 2022, and 2023 her work was selected for the Illustrators Exhibition of the Bologna Children's Book Fair. After participating in the Every Story Matters European project that promotes inclusion through stories and books, she wrote and illustrated her first book, The Duel (O Duelo), published in Portugal in 2022 by Planeta Tangerina, which went on to win Portugal's 2023 National Illustration Award. It was also selected for dPictus's 100 Outstanding Picture Books and was featured at the Bologna Children's Book Fair's 2023 BRAW Amazing Bookshelf.

Translator Rosa Churcher Clarke was born in Manchester (UK), in 1989. She studied Portuguese and Spanish at the University of Oxford, going on to do a Master's and PhD in comparative literature. She has been based in Lisbon since 2012, and works as an editorial assistant at Portuguese publisher Planeta Tangerina alongside her activity as a freelance literary translator.