Shadowmage The Hunter’s Revenge

To the kingdom, Valen is a pathetic drunk who failed to protect his murdered wife. They don't know this beggar is the "Shadow," master of dark magic. When Valen learns his brother orchestrated the murder, the masquerade ends. He awakens his apocalyptic Shadow Domain, executes his brother, annihilates a beast tide, and forces the terrified elites to witness true god-like power.