"The little mermaid inspired Kaisoo ff"
Except KS is not an innocent defenseless mermaid. And theres a lot of "racism".

Jongin thought being a prince was annoying, facing responsablity was something he'd avoid. Therefore he turned away from the truth and he ran away from himself.

But He hadnt known to be destined for something bigger. 
He hadnt known he had the power to change the horrors of the ongoing war, To be the hope of his suffering people. 

Now that a siren, the most hated species and the enemy to humans had saved his life and uncovered things about the war aswell as their past as they find out just how important their story was to history.

He hadn't expected to find a liking to it's feisty and strong spirit, its stubbornness and bold tongue, speaking out things to him no one has dared to before. 
Things he needed to hear.

He didnt know that falling for the enemie was the best thing that could've happened to him.
When the change of the world had started with a monster saving another.

The Enemies Blood (Boyxboy)

Jongin panted as he slid his sword through another one of the elfs, falling to one of his knees as the other leg had been wounded badly.

He was exhausted, he didnt know how much longer he could go killing them. It seemed like they didnt stop, he battled with himself about staying to search for kyungsoo or to follow the others to make sure his uncle, the king would be save.

Because that's what they're after, they want to kill the king and overtake the castle.

But he couldnt leave to join the guards protecting his uncle, because he knew compared to him kyungsoo had no one to protect him but jongin at the moment.

He inhaled deeply to exhaled again steadying himself on his sword when he got back up readying it in his hold while he walked forward with a fierce expression, sweat tickling down his temple from both the exercise and the pain.

Asking The Moon