Saving the Assassin Prince

Aerwyna is the youngest daughter of the long-forgotten pirate king and the youngest of seven girls. The youngest for literally everything in her family. One day she discovers a handsome young man washed up on her shores. Deciding to prove herself to her family, she takes him in and nurtures him.

Prince Erikk is a rebel, to his father and crown. After finishing assassin training he goes out on his first mission. To kill the former pirate king. But while at sea, sailing to his destination his ship lands in a storm and crashes. After being found and nurtured by a beautiful young lady, he discovers that she is none other than, one of the daughters of his target. As he struggles with his heart and his mind, his father sends bounty hunters for him. What will the young couple choose?
A rewrite of the little mermaid