A Campione, or Godslayer, is a supreme ruler.
Because he can slay a celestial being, he is able to call upon the holy, divine powers that belong to the gods.
A Campione, or Godslayer, is a lord.
Since he holds the power to kill a deity, he therefore stands above every mortal on Earth.
A Campione, or Godslayer, is a devil.
For all mortals living in this world, no one can hope to rival his strength.
Kusanagi Godou is a 16-year-old boy who once played as catcher and fourth batter in the senior league during middle school. However, an injury ended his future in baseball.
During spring break of his third and final year, he became caught up in an adventure and ultimately slew one of the Heretic Gods, Verethragna. As a result, he became the seventh and youngest Campione.
Now that he is a Campione—a godslayer—the young Godou must defeat the troublesome gods, aided by his followers.