Ryuusei Kumada

熊田 流星
Rysei is a third year student who has a distinct crosswound over his left eye and was a gang leader of the delinquents at school before Omi took over in his place. He is in fact a bear spirit. In the fourth volume he graduated from high school but soon changes his name to Suisei Kumada Kumada Suisei? restarts high school as a first year student. Source: Wikipedia.