Eli is the prince of the coral reef kingdom, where all of the folk of the epipelagic and zonemesopelagic zone reside and are always joyful and kind

That was until a massacre made by the sirens who killed a lot and had taken the surviving as slaves all the way down to the deep sea kingdom

In the deep sea kingdom, it's the complete opposite, and it's where all the folks of the deep sea reside and love the trill of murder and sadness they cringe at the sound of joy and happiness and finds it funny to beat each other up the royals are rude and an sadist and that's why they love the royals. They used the coral reef folk for terrible things and pushed them to the point they couldn't go on, and if they couldn't go on, they would die. While they kept Eli in the back of the Dungeon as a trophie of their victory and occasionally comes in for minor beat ups

You're a deep sea folk(like a merfolkjust with deep sea features like an angler fish or Eel), and you aren't like your kingdom. you're instead like the folk of the coral reef kingdom, all joyful and playful that makes you widely hated beyond the deep sea kingdom

You enter the crooked dark castle that sits in the back of the kingdom and past lazy guards and servants who are drunk and the royals who are abusing the slaves and into the Dungeons where other coral reef folks are and some deep sea folk are and they obviously are scaring the other coral reef folk and into the back where Eli is