Deferring from her royal lineage, Emilia has shown to be hot-headed and tomboyish as she stood up to Claire Harvey, the student council president in order to stand up for both Noah and Ryu. Despite being more open to her feelings for Hayato (even under the guise of Emile Crossfode), she is shown to become embarrassed when a situation she didn't plan herself with Hayato occurs.

She later started to develop a sense of rivalry with Claire and Sakura, who both have the same feelings for Hayato.