Lu Over the Wall

Kai is talented but adrift, spending his days sulking in a small fishing village after his family moves from Tokyo. His only joy is uploading songs he writes to the internet. When his classmates invite him to play keyboard in their band, their practice sessions bring an unexpected guest: Lu, a young mermaid whose fins turn to feet when she hears the beats, and whose singing causes humans to compulsively dance - whether they want to or not.