Fate Crossover Drama CD: Butterfly Effect

is a drama CD included in the TYPE-MOON Ace Volume 10 magazine in July 1, 2015. It was written by Eiichirou Mashin.
==Story==
Nero Claudius is summoned by Medea instead of Assassin in the Holy Grail War in Fuyuki, they fight against Rin Tohsaka and her servant Passionlip. Archer is summoned by Rani VIII in SE.RA.PH and she prohibits him for using underwear.
==Characters==
*Nero Claudius
*Medea
*EMIYA (Archer)
*Rani VIII
*Rin Tohsaka
*Passionlip
Category:Fate
Category:TYPE-MOON works
Category:Drama CDs
Category:Released in 2015