Devour, Evolve, Ascend to Dragonhood

Jason, a workhorse in the modern world, transmigrated into a Lucky Koi but was despised by the mermaids at first. Luckily, he was rescued by Linda and bound to a system. With the help of the system and his Luck Value, he evolved and defeated the enemies, earning the Lesser Dragon Queen's recognition. After he found the Lesser Dragon Queen's wicked intentions, he took the clan mermaids to defeat the Lesser Dragon Queen and finally became the True Dragon.