The Servant of Evil

A vocaloid based fanfic, centering around the Kagamine twins, Len and Rin. A little twist on one of the most popular vocaloid songs: Aku no meshitsukai.
Beginning before the tragic events that led to the twins' sorrow and ending after the list of events that Fate used against them, the eccentrically written story will bring back the tears you shed when you first heard the song itself.