Marmaid world

Sereath is a vast underwater city hidden in the deepest parts of the ocean. Thousands of mermaids live there, far away from humans, with no one knowing that their kingdom exists. The mermaids have houses made of coral and pearls, shops, gardens, and large squares. They swim among glowing fish and giant sea creatures. Magic: Every mermaid is born with a different power. Some control water, others control light, and some can communicate with all sea creatures. At the heart of Sereath lies a giant crystal called the Heart of the Ocean. It provides the entire kingdom with magic. If its light fades, the gates of Sereath will open, and the hidden world of the mermaids will be at risk of being revealed to humans. The Dark Kingdom of Nerathys is a terrifying underwater realm where sirens and intelligent octopuses live together. It is hidden in the darkest depths of the ocean, surrounded by black coral, poisonous plants and glowing purple crystals. Its powerful rulers use dark magic to threaten Sereath and steal the Heart of the Ocean. The most powerful marmaid is the marmaid with silver tail. They have all the power in the whole world and they keep the kingdom save but its a legend. . You can be everyone you want(if you want you can be the lost princess)