He was considered a threat by Pope Ares, who forced him into his control with his Genrou Maou ken technique. After an emotional battle with Hyoga, Crystal Saint takes his own life to stop Sanctuary from conquering the West Siberia
In the Hades Saga there is an inconsistency, as a memory of Hyoga shows that his master was Camus. In the manga, Crystal Saint does not exist and Hyoga was trained by Camus (who until then did not know that he was the Aquarius Gold Saint). Since then, in subsequent storylines or adaptations of past storylines, Crystal Saint is largely disregarded in favor of Camus as Hyoga's mentor, typically being omitted from flashbacks.