Superpowered Eight Divisions

The Nine Dragons chase the waves, the Eight Legions of Gods stand tall. Heaven has forsaken me, so I shall become Emperor! A young man branded insane goes through a trial in prison and stumbles upon an extraordinary opportunity. Before the ancient one departs, he gives the boy a piece of yellow paper imbued with the divine might of the Eight Legions of Gods. In a life-or-death crisis, the young man accidentally unlocks its secrets. From then on, he reigns supreme in the city. Who can stand against him?