鬼姫と花嵐 (Onihime to Hanaarashi)

Background
The song was first uploaded on October 12th 2011; and is overall Mermaid-P's most notable work, the others being Mermaid sung by Kagamine Rin or HEART by Nekomura Iroha. It's also Mermaid-P's second work to be voted on JOYSOUND (the first being HEART)

It's featured in the folk album compilation 花楽里漫葉集 as one of the CD/DVD tracks in the compilation.

It tells a story of a demon (Rin) who was once a human. She slays humans, and, a demon slayer (Len) was out hunting for her. Unfortunately the two fell in love, aware of the fact that they could never be together, Rin killed him. In the end, however, it's shown that Len wasn't dead -yet-, he bit Rin's finger, drank her blood, and became a demon just like her.

Japanese and Romaji Lyrics
a-ye materusaweria

hi-si okinokureina

ri-oakkunemenatuha enz

kurena kurena

kurena saweria

rinoa rinoa

rinoa akune-men

kurena kurena

kurena saweria

kurena kurena

kurena saweria

rinoa rinoa

rinoa akune-men

kurena kurena

kurena saweria

kurena kurena

kurena saweria

rinoa rinoa

rinoa akune-men

kurena kurena

kurena saweria