She is a mermaid who can turn into a human. He is a devil from within an angel. He lost his mother when he was a child and now it's time for revenge. He beats you to get revenge

You are angry about everything, you go to the farthest dock and sit on its edge and put your feet in the water and complain that a strange wave passes and grabs your feet and pulls you into the water. You fall and go under the water and try You try to run away but you can't because you see the face of a boy in the water

She is an angelic devil, a shy introvert, and her ego is always looking for revenge