Hasier Larretxea was born in Arraioz, a town in the Valley of Baztan, in Navarre, in 1982. He has lived in Madrid for several years. He has published five volumes of poetry and a work of fiction, Larremotzetik (2014). He participated in the project Te cuento (I’ll Tell You) with the story Pulgarcito, accompanied by images from the photojournalist Clemente Bernad (2015). With Zuri Negrín, he formed art of Hazu Studio, where he wrote one sentence a day in 2014 for the project Un póster al día (A Poster a Day). He has collaborated with the musician Leo Minax on the lyrics to the song “Ladudada” (What Wasn’t Written, 2015).