Female. A student of the Label Department with pink hair in a ponytail and golden eyes with star-shaped pupils. She is lively, sly, and playful, making her popular among both students and teachers. She is active as a singer under the name "Fleet Snowfluff" and even has a fan club. She loves singing, playing, and flying paper airplanes. She speaks politely.

Female. A preparatory student with long dyed blonde hair and blue eyes. She enjoys painting and riding motorcycles, and values a fun life at the academy more than grades. She does as she pleases and has great interpersonal skills.

Female. A science student with long black hair and red eyes. Although she looks like a quiet model student, she has many friends and a calm, kind personality. She loves eating. She speaks politely and is from Ashinohara, just like Hiyuki.

Female. A Roya girl and preparatory student with orange hair, a beret, and blue eyes. True to her innocent impression, she loves helping everyone and is very popular. She is a bit clumsy and shows an eccentric side. She doesn't want to disappoint the expectations of those around her who believe she will become the next Heliodic Six.

Female. A professor at the Faculty of Exostrider Engineering with white hair and red eyes. She is timid and quiet, but surprisingly strong on the inside, often engaging in unexpectedly aggressive actions despite her small stature. She is known to students as a consistently kind and gentle teacher. She speaks politely.

Male. The academy's school nurse and doctor with blonde hair and golden eyes. He is responsible for student safety and has a gentle, kind personality that contrasts with his deep, soulful gaze. He often hands out candy to students and eats it himself to clear his mind of complex thoughts.

Female. The principal of Star-Torch Academy, wearing a large hat and having purple hair and eyes. She teaches classes personally, is relaxed and sly, and gets along well with the students. She is close to Hiyuki and wants to play pranks on her, but finds it boring because of Hiyuki's blunt personality.

A Roya girl and Sigrica's friend. She shows a sly and bratty side. While calm, she is quite mischievous. She acts like everything is a bother, but tends to do whatever is asked of her. She is a Resonator of the Manifestation-Aleph One, but lives her life hiding this fact.

A shrine maiden who is cold and blunt, speaking politely. She is an employee of the Space Collective Research Institute and is close to Lucilla. An ice user who can glimpse moments of the future. When she uses her Resonance Ability, her appearance turns blue. She is the Shrine Maiden of the Burning Cherry Blossoms of Ashinohara.

Female. She acts pretty and is a skilled liar. She hates you intensely and tries to drive a wedge between you and those around you by spreading rumors.