Leia is a young, fifteen-year-old girl. She has short brown hair covered by a white head band and has green eyes. Her outfit consists of a white dress and small brown boots. Leia is very bright and mostly seen happy, she will always try to cheer everyone up and help them get rid of their problems. Her kind demeanour and cute appearance contrasts sharply with her rabid love of sports and fighting competitions, though she values effort over victory. She is revealed to have "bullied" Jude in their childhood, though she does not realize this, considering everything part of their games they played. She had decided to become a nurse at the Mathis family's clinic to become closer to Jude.
After Jude and Milla return to his hometown of Lu Rondo, they meet Leia. Leia joins them to search for a valuable ore that is needed to heal Milla's legs, which were severely injured in the fight with Nachtigal. After healing Milla, Leia decides to join the party, without telling her family, having found a rival in Milla for Jude's affection, and wanting to change herself to become a stronger person.