Fate/Kaleid Liner Prisma Illya: Vow in the Snow - Dark Sakura's Room

"Dark Sakura's Room" is a supplementary anime feature included with the limited edition Blu-ray release of the "Fate/kaleid liner Prisma☆Illya Movie: Sekka no Chikai." The nature of this side story is not explicitly detailed in the provided description. However, its inclusion suggests it offers additional content related to the main movie. The title, "Dark Sakura's Room," hints at a focus on a character named Sakura, potentially exploring her inner world or a specific location associated with her. The overall theme likely complements the main movie's narrative.