Why Is This BOSS Still Getting Stronger?

Traveling to the world of heroes and demon kings, Blacks became a marginalized little BOSS in the demon king's army, and was about to become a victim of infighting and a stepping stone for the heroes. Fortunately, he awakened the [Strongest BOSS] panel, counterattacked and became stronger, expanded his power, and gradually advanced from the Demon Blood Dragonborn to the Final Demon Dragon! Brave cheat? Then I will cheat even more ruthlessly, and I will bring my subordinates with me to cheat! Suppression by the devil? Then I will overthrow the Demon King and create a new, stronger and more fanatical Demon King army! Gods and demons join forces to suppress? Then suppress them together! Capture the goddess of creation as a maid! This era belongs to the supreme disaster song! The blasphemous monarch! Extremely demonic dragon!