The green eyesis a story written by Gustavo Adolfo Bécquer and published in 1861 in his book of Legends. The main theme is about the legend of the female spirits of the waters.
Íñigo is hunting along with his master Fernando and they wound a deer, which, wounded, flees to a place called Fuente de los Álamos. There, the legend tells that an evil spirit is around, so Íñigo warns his master of the danger and that they must leave the prey, but Fernando decides to go look for the deer anyway despite the warnings...
As the days go by, Fernando appears really sad and with a very pale face. He spends many days at the Los Alamos fountain, but no one knows what he does there. One day, Fernando confesses to Íñigo that he saw green eyes at the fountain, which he is obsessed with and that he looks for them every day he goes to the place. Despite the fact that Íñigo warns him that those eyes belong to a demon, Fernando does not give up or get scared...