This track was inspired by the true story of Issei Sagawa, a Japanese lust murderer, cannibal, and necrophiliac known for the killing of Renée Hartevelt in Paris in 1981.
https://en.m.wikipedia.org/wiki/Issei_Sagawa#:~:text=Issei Sagawa (佐川 一政,Hartevelt in Paris in 1981.
The La Folie album is about different aspects of "The Madness of Love" and conceptually, each of the songs on the album was intended to explore a different kind of "love"