Cursed (Vampire knight)

Amara is a mermaid, but she isn't nice or sweet or have red hair. Mermaids are the exact opposite of what'd you find in a Disney movie. Instead they are manipulative, seductive, and evil. They lure men to them with their beauty and then pull them in the water and steal their heart, literally. But after Amara messes with the wrong man and the wrong witch, she is cursed to have human legs and live on land forever, unless she can prove to live and coexist with humans, and gain some form of humanity in her frozen heart. At first Amara planned to just get along with them so she could get her tail back, but after a while, she finds the humans might not be as bad as she thought, or the vampires.