16 years old. Affectionately known as Leo-hime. She often says "call me Your Highness". Leader, as well as the Princess of Galette Lion Army, which is the enemy nation that aims to invade Biscotti. Despite that, Leo and Millhiore are childhood friends and are as close as sisters. A brave warrior, she uses heavy armor and weapons in battle. Has to carry the burden of living up to the expectations of the battle-loving people of Galette. She talks with a masculine tone, similar to that of an old men (frequently uses washi and jaa).