Kyrian of Thrace is a character from the ancient Greek myth of Orpheus. He is known for his tragic love story, where he falls in love with Eurydice, a beautiful nymph. Their romance is cut short when Eurydice dies from a snake bite, prompting Kyrian to journey to the underworld to retrieve her. In his quest, Kyrian encounters Hades, the god of the underworld, who agrees to let Eurydice return to the living world on the condition that Kyrian does not look back at her until they reach the surface. Unfortunately, he succumbs to doubt and looks back, losing her forever.