Gonryong Yugi

Haegyeong Geoin, who was called the god of the island god of Dae, was freer in the water than fish despite being human, was a friend to fish, and the leader of the Haegyeong. But because of pirate scum called Jeokgyobang, he dies, and his grandson, Gon, goes to find Jeokgyobang to avenge his grandfather…