Fate/kaleid liner Prisma Illya: Vow in the Snow is a Japanese animated fantasy action film and a prequel to the manga Fate/kaleid liner Prisma Illya by Hiroshi Hiroyama, released on August 26, 2017. The film stars multiple voice actors including Noriaki Sugiyama, Kaori Nazuka, Rikiya Koyama, Natsuki Hanae and Noriko Shitaya for the main characters.