The main character, Kenneth, was an F-rank adventurer. His only speciality is [Visualization], a unique skill. He was using this ability to look at women’s underwear when he found a girl. That girl turned out to be the world’s most fearsome Demon God. The lonely Demon God who had been imperceptible would like Kenneth, who was able to recognize her existence, to keep her company. Kenneth Cartoldo, an F-rank adventurer, borrows the Demon God’s capabilities to become unstoppable.