Rouran presents as an elderly figure in the narrative of Eiyū Gaiden Mozaika. His story intertwines with King Sazara, who falls under the possession of an evil priest and launches a conquest. Within this conflict, Rouran emerges as one of King Sazara's victims. He embodies a mentor archetype, serving as an elf-like guide to the protagonist U-Taruma in a capacity reminiscent of Yoda's role. The narrative explicitly details his demise in the segment titled "Rouran no Shi" (Death of Rouran). This death scene occurs during Episode 2 at approximately the 17:30 mark. Rouran also features within SEGMENT. VI of the album's drama tracks.