Lelai

Lelai (レライ): A mermaid from the Sea of Tears, an underground lake formed from human tears over the millennia. Having a lovely singing voice, Igam deceives Lelai as part of a scheme involving Horn Doggler. Once Lelai learns the truth, she is forced to sing after Igam caused the Sea of Tears to dry up. Takeru manages to save her and takes her to the ocean to keep her alive.