The Demon Child - Awakening

Dyne was a regular 15-year-old boy who lived in the slums. He had a best friend, a worst enemy, and a group which he could rely on. But that all changed when a demon killed his mother and awakened a power recently unknown to man. He then was accepted into the royal academy by the king himself. To kill a demon you have to become one. For him, he's already halfway there.