Tellus told you Shugos of the Tigraki Workshop make special wings, and directed you to one named Agemonerk. You reached Tigraki Island, where Agemonerk confirmed Tellus's story. Agemonerk asked you to find Raithor, who had gone missing during a test flight. When you located Raithor, she said the wings were fast but unstable. You went back to Agemonerk and told him what Raithor said. He knows what to fix now.