"SADISTIC VAMPIRE" is a song composed by Oh-P, first uploaded on October 2, 2008. It is Oh-P's second original Len work, and also second most notable; the others being "Another" and "Growth Life" both sung by Kagamine Len. It was notable enough to be voted up JOYSOUND (karaoke) on April 24. It tells a story of Len, who is a vampire; trying to trap his victim (as shown in the video, Rin); for he wanted to drink blood. Len's victim was said to have come to the forest alone, and he had pretended to be "nice" along the way. However by the end of the song, a red cross can be seen there.