Osoro Shidesu is a Student and the leader of the Osaka University's gang of delinquents. Very little is known about her past, or her goals. She has been known to be violent, so most people tend to stay away from her out of fear. Osoro was born with unimaginable strength and often found it difficult to play with other children without hurting or scaring them. Osoro was perceived as a violent thug and ostracized by peers, teachers, and even her parents. Few admired her and a handful of others understood her. Osoro works a part-time job after University hours as a waitress in popular Cafe.