A 3rd-year high school student. The ultimate jack-of-all-trades who is reasonably good at both academics and sports. She is pessimistic about not having a specific specialty, despite achieving excellent results in all areas. Furthermore, she has a graceful and kind-hearted personality. She basically speaks in polite language (keigo) to everyone. Unable to ignore people in trouble, she has reached out and solved problems many times. She is beloved by the entire student body; underclassmen call her "Lady Hibiki" or "Onee-sama" and look up to her with worshipful eyes. Her classmates call her by her name normally.

A 3rd-year high school student. She believes without a doubt that she is a superior being. She speaks in a haughty, condescending manner and is shunned by other students, except for a few followers. She often bullies other students with harsh words, but her efforts fall flat against Hibiki, who handles her effortlessly.

A 3rd-year high school student. She is good at sports but poor at studying. She has a tomboyish personality. Before exams, she has Hibiki and Rindo help her study. She does not get along with Asuna, and they are constantly bickering.

A 2nd-year high school student. The quiet type whose emotions rarely show on her face. She is not good at talking and is often isolated. She looks up to Hibiki, who always looks out for her.

A 3rd-year high school student. Student Council President. She has been officially recruiting the high-achieving Hibiki to the student council, but Hibiki has extremely low self-esteem and lacks confidence, so she declines every time. However, she does help out occasionally. She is serious and a bit stiff, so those who don't know her well tend to keep their distance. In truth, she is a kind and handsome-style girl, making her popular enough to have secret fans.

A 2nd-year high school student. A boyish and energetic athletic type. She admires Mayura and mimics her in various ways. She calls Hibiki "Lady Hibiki," but calls Mayura "Mayura-san."