Corone is one of the colonists in Tet's tale and the self-proclaimed older sister of Riku. She is also the founder of Elchea after the Great war and is Stephanie Dola's direct ancestor. She is the only Imanity who knew about the "179 Ghosts" of Imanity.
Her appearance in manga and anime is very similar to Stephanie Dola but her hair is slightly longer.
She is very attached to Riku, going as far as becoming Riku's sister after he lost his home and family in a conflict between Flügels and dragonias. She insists on being called "Nee-san" (Sister) to reaffirm their relationship. She cares for Riku, hugging him after Ivan's death and yelling at him for his carelessness when consuming Black Ash to conceal his body elements and permanently damaging his body.
She is very playful. She made sexual innuendos when Riku and Shuvi were found sleeping together with her middle finger penetrating a hole made by her index finger and thumb. She often jokes with him such as when mentioning his virgin status or how he smells.
She is sensitive about some things, for example, she noticed that Shuvi was not Imanity when she first met her.
She seems to be a very skilled ruler of her people (similar to Stephanie) as she is trusted by Riku to look after his people during his campaign to end the war and his death.