Alana S. Portero is a medieval historian, writer, playwright, LGBTQ+ activist and co-founder of the theatre company STRIGA. Her writings on feminism and LGBTQ+ activism from the perspective of a trans woman have been featured in a number of international publications, including Agente Provocador, El Salto, S Moda and Vogue. Bad Habit is her debut novel and spent over 17 weeks on the bestseller list on publication in Spain. She lives in Madrid.