The actor who plays Gregorio, Marino León, was an immigrant from Huancavelica when the directors and producers discovered him. He was reading a book in a classroom that was full of kids, at a school in Lima. Stefan Kaspar and Fernando Espinoza looked around the classroom searching for somebody who could play the role and then they saw Marino. They asked the teacher to tell Marino that they would like to talk to him. They talked to Marino in Quechua and Marino told them that he could understand Quechua, but he could also understand Spanish. At that age Marino was already bilingual.