Kindred Spirits and Heroic Spirits

Waver Velvet and Rider Iskandar know they have to stop Kayneth Archibald before he can finish his invention, which will destroy the bond between Master and Servant. At Rider's behest, though, they don't tackle the problem alone. Instead, help comes from the most unexpected of places: a singer named Rika Seto and a DJ named Saori Hidaka. (D4DJ/Fate Zero)