Lema Antonio Ricardo Sanjurjo, who went by the nickname of Kaito, "branded his girlfriend as if she were an animal", according to the judge who heard the case at A Coruña’s criminal court.
The court heard how Ricardo had been out for the evening with his girlfriend Carmen Alonso Navarrete visiting different bars until 3 or 4am, according to a report in the local newspaper La Voz de Galicia.
They went back to his flat located in the town of Cees in the northwestern region of Galica just outside A Coruña and after she drank a glass of orange juice and a glass of water, Alonso said that she fell asleep.
It wasn’t until she was showering the next afternoon at her own place that she felt a "tingly sensation" and discovered she had a burn on her lower back and that the skin was peeling off.
The burn at the base of her spine was in the shape of a K - the first letter of her then boyfriend’s nickname - and corresponded exactly to a branding iron that Ricardo had once shown her in the hope of persuading her to allow him to mark her.
In a court statement she said that she had vehemently refused to allow Ricardo to brand her and therefore believed that he drugged her to carry it out.
She added that she remembered feeling "anesthetized" the next morning.
A forensic doctor agreed that it would be impossible to brand a person in a normal sleep without them waking up with the pain.
Judge Francisco José Ruano, of La Coruña’s criminal court number 6, found Ricardo guilty of domestic violence and sentenced him to three years in prison.