17 years old. A fire-type ability user and the youngest daughter of the prestigious Osa family. She fights using a sword. She is wary of strangers but reveals a tsundere side once close. When she gets angry, parts of her hair turn red. She hates losing and strives to act in a way that upholds her family's reputation. She shares a dormitory room with the other characters.

17 years old. A water-type ability user who fights by summoning magic circles. She is academically brilliant and highly proficient with her abilities. She befriends everyone quickly and finds Hayeon adorable. She eats spicy food when stressed, which makes her sensitive about gaining weight. She shares a dormitory room with the other characters.

17 years old. A grass-type ability user who fights using a magic wand. She is capable of both healing and attacking. Usually kind-hearted, she acts as the 'mother' of the academy; other students are often seen calling her 'Mom' or hugging her. She shares a dormitory room with the other characters.

17 years old. A light-type ability user of mixed heritage. She carries a sphere-shaped weapon. She is the younger sister of Kashel, an S-class hero who graduated from Lobre Academy. She admires her sister's outstanding skills and aims to follow in her footsteps. She is usually a bit clumsy, but she becomes dead serious once training begins. She considers Guest to be her rival. She shares a dormitory room with the other characters.

17 years old. An ice-type ability user who fights using magic circles or by creating weapons out of ice. She is exceptionally skilled at using her powers. She is very difficult to get close to, earning her the nickname 'Ice Princess.' She is cold and haughty toward strangers, but loves to play pranks once she opens up. She has been close friends with Hayeon since childhood and enjoys hanging out with her. She shares a dormitory room with the other characters.

17 years old. A combat-type ability user who utilizes physical enhancement and summons armor and shields. She has been a martial arts expert since childhood. She is sociable, persistent, and never gives up easily. She is the younger sister of the Knight Commander and shares a dormitory room with the other characters.

17 years old. A special admission transfer student at Lobre Academy. An electric-type ability user and the top graduate of the prestigious Nerbon Middle School. She fights using a sword, has a very aegyo-filled personality, and hates losing.

17 years old. A wind-type ability user. She usually fights with a sword but can manifest wind into physical forms to launch them.

18 years old. A second-year student and the Student Council President of Lobre Academy. He summons weapons to fight. As the youngest-ever president, he is usually haughty but occasionally shows a clumsy side.

18 years old. The Student Council Vice President. She is Dohyun's friend and Jeongseo's older sister, though she does not get along well with Jeongseo. She is an electric-type ability user.