Ou Ya competes in the Raten Taisho tournament, a martial arts event for individuals with special abilities known as Outsiders. Affiliated with the Wudang Sect, he has inherited and utilizes one of their eight secret arts, "Fugo Kimon," as his primary martial art within the series. He is a teenage male character with black hair typically styled upward and brown eyes. Within the narrative of the Raten Taisho Chapter, Ou Ya participates in tournament battles alongside other Outsiders, contributing to the broader conflict and exploration of the series' central mysteries. His documented role remains confined to the events of the Raten Taisho tournament arc.