Lord of the Dragon's Maw

To save his ill sister, Leo Linden is exploited and cast out by his cousin, Dylan Linden. He ventures into the deep-sea forbidden zone—The Dragon's Maw, finds treasures, and rescues Chloe Sutton. Dylan Linden and Harvey Sharp ambush him to seize his treasure, but anger The Dragonfish King. The fish-scale pendant left by Leo's father awakens, making the Dragon King submit. Leo turns the tables, conquers the deep sea alongside Chloe Sutton, and donates treasures to the country.