In a world where gods are real and hidden from humans, sixteen-year-old Godou Kusanagi embarks on a trip to Italy to deliver a tablet for his grandfather. Unexpectedly, he is thrust into a battle between Heretic Gods, aided by the witch Erica Blandelli. After emerging victorious in a fierce battle against the god of war, Godou becomes a Campione, charged with protecting humanity by defeating these rogue deities. As a Campione, he faces challenges from other gods seeking to test his strength, and gains a following of devoted female supporters. Join Godou in Campione!: Matsurowanu Kamigami to Kamigoroshi no Maou as he navigates the clash of celestial powers in a war between Heaven and Earth.