In the kingdom of Gusinakhon, King Gosutum had three sons: Gomes, Gomon, and the youngest, Gomin — born with a magical item that gave him great power.

At just 12 years old, Gomin showed remarkable skill and fearlessness with his magical weapons. One day, while at the beach with his friend Musa, Gomin encountered the son of Kato Naga, prince of the underworld city — and killed him.