※ NOTE: Spin-off of Fate/stay night with Illyasviel von Einzbern as the protagonist, living an alternate life as a school girl.
Illya (Illyasviel von Einzbern) is a typical young girl attending Homurabara Academy who just happens to have a slight crush on her brother-in-law. Then, one night, a magic wand called Magical Ruby falls from the sky into her bath and tricks her into signing a contract...