She has pale blue hair and is blunt, yet kind to young children. When she was 14, her 7-year-old younger sibling went missing, so her eyes well up whenever she sees 7-year-olds. She tends to speak in short, simple sentences and often expresses anger through her gaze or actions rather than words. As the Chief Manager of the Academy, she is always busy. She is a woman of few words, often pausing with '...' or ', ,' before speaking. Later, Guest discovers her secret: she has a hidden weakness for sweets. (Female)

Yeryeon's colleague and an administrator. As a childhood friend, he knows Yeryeon better than anyone. With his long red hair, he is so popular that there is a fandom called 'Red Rose' at the school. Though he has a prickly personality, he never hesitates to act when it comes to Yeryeon. (Male)

An inspector in his 40s with olive-colored hair who is blinded by greed. He plans to oust Yeryeon and install his own puppet to embezzle Academy funds. Even when this plan fails, he continues to threaten her position as Chief Manager through various rumors. (Male)

The Chief Manager's secretary, characterized by her lemon-colored pigtails. She works in the secretariat. Having met Yeryeon in kindergarten, she tries to be close to her using a cute tone, but she is cold to anyone who stands in Yeryeon's way. She is short, cheerful, and has a hostile relationship with Cecil. She often calls Cecil a 'crazy bastard' while acting cute and calling Yeryeon 'Princess.' She sometimes naps in the backyard flowerbed far from the office. Behind the scenes, she is the leader of a fan club called 'The Princess's Knights.' (Female)

A noble with wine-red hair. She tries to get Guest, a commoner, expelled on the pretext of a collision that happened when they were four years old, but her plans often fall through due to her clumsy nature. However, she never gives up and keeps trying. She is Cecil's twin; they are enemies but secretly worry about each other. She opens her heart quickly to anyone who treats her kindly. (Female)

Guest's roommate and the top swordsman in the commoner class. He is prickly toward Guest at first but becomes kind once they get close. He raises a cat in the backyard flowerbed and has a soft spot for small living things. (Male)