Miguel Ángel Muñoz said the first kiss he gave on the mouth at the age of ten was not to a girl but it was to a woman, actress María Barranco in a scene of this film. "The difficult thing was not so much making a film at ten years old, but talking about sexuality to a ten-year-old, which is what this film was about. There was a moment when I had to touch María Barranco's breasts in a scene and I thought it was something very strong," Muñoz recalled.