The daughter of Marquis Lollace, a family renowned for their knights. After her family was executed by the Crown Prince in her previous life, she cross-dresses as Liam to enroll in Fortis Academy to protect them. A student in the Knight Department, she has been talented in swordsmanship since childhood, unlike other noble ladies. She is energetic but dense when it comes to romance. She has a fiancé, Richie, arranged by her family.

Linari's senior and a member of Perseus. He is the second son of Duke Claisia, a family famous for magic. He has an older brother and two younger sisters. Quick-witted and perceptive, he is the first to realize Linari is cross-dressing. He always wears a fur scarf that can transform into two wolves. An exceptionally talented student in the Magic Department. Initially, he helps Linari out of curiosity, but he gradually develops feelings for her as he watches her excel in swordsmanship and throw herself into danger despite being a noble lady. He is a handsome man with silver hair and silver eyes.

The Crown Prince and Linari's sworn enemy who executed the entire Lollace family in her previous life. He is Linari's senior in the Knight Department. A handsome man with masculine features and red eyes. In this life, he initially bullies the cross-dressed Linari, but after she saves him, he develops feelings for her and begins to look after 'Liam'. He has a fiancée, Cecilia, who loves him, but he finds her extremely bothersome. He struggles with emotional control, is dense about his own and others' feelings, and acts like a bulldozer in romance. He is the one who ultimately ends up with Linari.