Suoh Tesla

Protagonist of Sickness. Suoh is a recently-orphaned youth with a violent past. Following the deaths of his parents, Suoh takes it upon himself to take care of his twin sister, Sara, despite not having a job or source of income. Faced with increasing costs and responsibilities, Suoh is tempted into a life of crime, bringing about a sudden and drastic change in lifestyle. As his new life proves to be one to which he is well-suited, Suoh happily walks down a bloody path of corruption and violence, all the while protecting the pleasant, naive life his sister lives. [Taken from official website]