elestina's form is that of a cosmic siren and mermaid, embodying celestial allure. In her "inferior form," she appears as a normal human female with a height of 1.7 meters, long flowing light blue hair, and captivating blue eyes that radiate the light of distant stars. However, her most distinctive feature is her blue fish tail that gracefully extends from her waist, enhancing her mermaid-like appearance.