Spin-off of Fate/stay night with Illyasviel von Einzbern as the protagonist, living an alternate life as a school girl. While taking a bath, she stumbles upon Kaleido Stick Ruby, who turns her into a magical girl.
Runtime: 25 minutes
Fate/Kaleid Liner Prisma Illya - Fate/kaleid liner Prisma Illya: Oath Under Snow - Netflix
Fate/kaleid liner Prisma☆Illya: Oath Under Snow (Japanese: 劇場版Fate/kaleid liner プリズマ☆イリヤ 雪下の誓い, Hepburn: Gekijō-ban Fate/kaleid liner Purizuma ☆ Iriya Sekka no Chikai) is a Japanese animated fantasy film adaptation of the manga series by Hiroshi Hiroyama, released on August 26, 2017. Shin Ōnuma and Silver Link returned from the anime series to direct and produce the film, respectively.
Fate/Kaleid Liner Prisma Illya - Production - Netflix
The film was first announced on September 21, 2016 when the finale of the anime's fourth season, Fate/kaleid liner Prisma Illya 3rei aired; this was confirmed by the episode's end title card. On February 10, 2017, the anime's Twitter account confirming its title as Fate/kaleid liner Prisma Illya: Oath Under Snow.
Fate/Kaleid Liner Prisma Illya - References - Netflix