Great Devil System

In a world full of supernatural powers and superpowers, 16-year-old Beluga Kane is an orphan, living a somewhat overly optimistic life and trying his best to get by. Because of his inability, he was bullied and tortured every day. Yet, for some strange reason, he never complained and always stayed happy no matter what. It's almost unnatural. In one cruel day of excruciating pain, he realizes that the world is a cruel and unforgiving place, which brings him back to his lost sanity. In his despair, a miracle happened. [You have unlocked the demon system] Now that Moby has the power to change his cruel fate, how will he use it to get back the world that wronged him on his way to becoming a demon lord...