On leaving prison he painted a series of one hundred works inspired by the work of Gabriel García Márquez One Hundred Years of Solitude, which exposes in Valencia and Barcelona. Mario Vargas Llosa wrote on this occasion about Castejón's art: "So one of the most interesting aspects of this collection of pictures of Castejón show that even today the art of painting can, without abandon modernity, have the literature as a starting point. Like a woman, a dream, or a crime, a novel can be for an artist a creative ferment... " 