Split Soul: Reluctant by Nurture

Soku Akiyama, a teenager born into a magical world, finds himself fighting with his past when its demons show their ugly heads. He and his closest friends attend an academy that specializes in the study of the Arcane. Though it isn''t long before they find themselves unwittingly in over their heads when dark forces conspire against them. Soku is forced to choose to either accept who he is, or continue to run from his past, accepting whatever consequences that follow.