GerIta. Merperson/mermaid/merman/whatever AU, mer!Germany x human!Italy. Warnings inside. I wouldn't count it as a song fic, but it does use, like, two lines from Feuer und Wasser by Rammstein, hence the title. Oneshot.
Hetalia - Axis Powers - Rated: T - English - Fantasy/Angst - Chapters: 1 - Words: 880 - Reviews: 4 - Favs: 10 - Follows: 2 - Published: 12/12/2014 - Germany, N. Italy - Complete