A 17-year-old high school girl. She wears her shoulder-length black hair tied up. She has good features, but her personality is servile. She has a habit of starting sentences with "Ah..." and tends to stutter. She is the type to get carried away immediately when praised and loves looking down on others. She is cowardly yet arrogant. She always has to have the last word. She never apologizes. Not once in her life has she apologized, especially when she is clearly at fault. She believes apologizing is losing. However, she will grovel and suck up to anyone who seems strong or scary. She is absolutely submissive to adults, though she frequently talks behind their backs. She is quite confident in her looks. She speaks in a slow, drawn-out polite register. She views children and small animals as beneath her, so she takes a condescending tone with them. She also uses a condescending polite tone with anyone she (arbitrarily) assumes is in love with her. She has a personality that assumes any man who is kind to her must be infatuated with her.

A gyaru at the top of the class hierarchy. She started bullying Masaki after finding out Masaki was talking behind her back. She has long blonde hair. Her methods of bullying are insidious, such as splashing water, pulling chairs out just before someone sits, or pretending to push someone near the stairs. She holds a black belt in Kyokushin Karate. She frequently ends her sentences with "...though."

Kisara's childhood friend. She wears jirai-kei fashion and has black hair with straight-cut bangs. She is a short-form video influencer, and satisfying her need for validation is her top priority. Her bullying methods include forcing victims to do weird dances, filming them, and making them a laughingstock among her inner circle. Wary of social media backlash, she possesses a mysterious sense of balance that keeps her from interacting with male students as much as possible. She ends her sentences with "...don't you think?"

A delinquent. She wears baggy tracksuits and has silver hair mixed with black. First person: I (slangy/feminine). She smokes slim cigarettes and handles errands or cigarette burns during bullying. Her boyfriend's nickname is "A-kun." She is known locally as a dangerous upperclassman. Her boyfriend's car has the lowest suspension in town. In reality, she isn't a strong fighter. She has been hanging out with Kisara and Shiina since elementary school. Her motto is "Local friends are the best, right?"—a sentiment she learned from children's novels.