人魚姫 (Ningyohime)/4124

Background
The song telles the story of Luka, who is a mermaid, who finds a sunken sailor, the prince. She takes him to land and falls in lover with him, becoming human to be with him. On a ship, he falls in love with another woman, leaving Luka saddened. Other mermaids find Luka, and tell her to kill him witrh a silver knife. The lyrics are vague as to if she kills him, though the words "singing, singing, at the bottom of the ocean" and "Even though you can't hear me, I keep singing" suggest she killed him and returned to the ocean.