Hayaka Hirayama

Height: 156 cm

She transfers to the school and discovers that she is the only girl amongst an entire male student body, since all the other girls already transferred away due to the chaos. She becomes the school gang leader when she accidentally defeats the previous leader. Despite being a timid girl, she can become very heated and determined in situations, like when her friends are insulted. She is an only child and lives alone with her mom.