Born into a lineage of Saints, she is an excellent Saint hailed as the "greatest in history." She gained power through rigorous training, but not knowing how to interact with people, she is shunned by those around her for being "too perfect and uncute." She cherishes her younger sister Mia, also a Saint, and performs her duties with Mia's existence as her support.

Philia's younger sister and a fellow Saint. She completed her Saint training in just one year, and her spell casting speed is faster than her sister Philia's. Innocent and widely supported by the citizens, her bright smile is loved as the "Treasure of Jiltonia." She respects Philia both as a Saint and as an older sister.

The second prince of the Kingdom of Jiltonia. He is prideful and jealous. In order to become engaged to Mia, he presented Philia with a notice of broken engagement.

The second prince of the Kingdom of Parnacorta. He is beloved by the citizens for his friendly and compassionate personality, but he has absolutely no interest in the throne and is often found doing farm work.

Oswald's older brother and the first prince of the Kingdom of Parnacorta. The previous Saint of Parnacorta, Elizabeth, was his fiancée. He has a soft-spoken and gentle personality, but he is also a rationalist who puts the prosperity of the country first.

Philia's maid and guard in the Kingdom of Parnacorta. She takes full care of and spoils Philia, who tends to handle everything alone. Energetic and bright, she has become a good conversational partner for Philia.

Philia's butler and guard in the Kingdom of Parnacorta. He previously served as a knight in the Parnacorta Knights. Cooking is his hobby, and Leonardo is in charge of Philia's meals.

Philia's maid and guard in the Kingdom of Parnacorta. Hailing from the Kingdom of Murasame, an island nation in the northeast of the continent, she is skilled in stealth and intelligence, protecting Philia from the shadows.

A Saint of the Kingdom of Bolmern. The fourth daughter of the Martiras family, a lineage of Saints, she visits Parnacorta to learn exorcism arts from Philia. She loves the "Treatise on the Saint" written by Philia.

Julius's older brother and the first prince of the Kingdom of Jiltonia. Naturally weak, he stays confined to his room, refusing to appear for public duties citing poor health.