Ishura -Shin Maou Sensou-

The Demon King, who terrorized the world for twenty-five years, was slain. However, the Hero who killed him never came forward. Therefore, in order to decide on the "True Hero" that will be acknowledged by everyone as the strongest, sixteen "Asuras", masters of extraordinary abilities, are gathered in the great kingdom of the Yellow Capital! "Insta-Kill Blade", "Almighty Magic", "Absolute Defense"...