Katsusawa

Katsusawa is a female classmate of Riki who is frequently seen alongside Takamiya and Suginami. She serves as a antagonistic supporting character within the story, targeting Nnomi and Kigaya through verbal harassment and deliberate destruction of personal belongings. Her hostile behavior is largely rooted in jealousy and personal grudges directed at Kigaya. Despite projecting an air of arrogance, she quickly reveals a timid and unsettled side whenever her wrongdoings are exposed or she faces any form of pushback.