Akino Ametsuchi is a famous and long-serving Prima undine, who started Aria Company with Aria Pokoteng after realizing she was missing too much of life as Himeya's top ace.
She was Prima undine for 30 years and mentor to Alicia, her last disciple, to whom she left the company on her retirement. She is highly respected by younger undines, who call her "Grandma".
